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  • Oracle releases new Java Embedded products

    - by Henrik Stahl
    With less than one week to go to JavaOne 2012, we've spiced things up a little by releasing not one but two net new embedded Java products. This is an important step towards realizing the vision of Java as the standard platform for the Internet of Things that I outlined in a recent blog post. The two new products are: Java ME Embedded 3.2. Based on same code as the widely deployed Oracle Java Wireless Client for feature phones, this new product provides a Java ME implementation optimized for very small microcontroller-based devices and adds - among other things - a new Device Access API that enables interaction with peripherals common in edge devices such as various types of sensors. In addition to the new Java ME Embedded platform, we have also released an update of the Java ME SDK which adds support for the development of small embedded devices. Java Embedded Suite 7.0. This is an integrated middleware stack for embedded devices, incorporating Java SE Embedded and versions of JavaDB, GlassFish and a Web Services stack optimized for remote operation and small footprint. A typical Internet of Things (or M2M) infrastructure contains three types of compute nodes: The edge device which is typically a sensor or control point of some kind. These devices can be connected directly to a backend through a mobile network if they are installed in - for example - a remote vending machine; or, they can be part of a local short-range network and be connected to the backend through a more powerful gateway device. A gateway is the second type of compute node and acts as an aggregator and control point for a local network. A good example of this could be a generalized home Internet access point, or home gateway. Gateways are mostly using normal wall power and are used for multiple applications, deployed by multiple service providers. Finally, the last type of compute node is the normal enterprise or cloud backend. Java ME Embedded and Java Embedded Suite are perfect base software stacks for the edge devices and the gateway respectively, providing the Java promise of a platform independent runtime and a complete set of libraries as well as allowing a programmer to focus on the business logic rather than plumbing. We are very thrilled with these new releases that open up exciting opportunities for Java developers to extend services and enterprise applications in ways that will make organizations more efficient and touch our daily lives. To find out more, come to the JavaOne conference (for technical content) and to the Java Embedded @ JavaOne subconference (for business content). There will be plenty of cool demos showing complete end-to-end applications, provided by Oracle and our partners, as well as keynotes and numerous sessions where you can learn more about the technology and business opportunities.

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  • A Six Step Plan for Introducing Kids to Tabletop RPGs

    - by Jason Fitzpatrick
    Introducing your kids, nieces and nephews, or other budding geeks to your geeky hobbies like role-playing games can be tricky. This handy plan lays out some simple steps to make RPGs fun for younger kids. Courtesy of Ryan Carlson over at Geek Dad, the six-step primer covers topics like simplifying the rules, varying task difficulty, fun character creation ideas, and ensuring there are adequate opportunities for in-game success. Hit up the link below for the full guide. Have a RPG-introduction success story or tip to share? Add to the conversation in the comments below. Running an Introductory Roleplaying Game for Kids [GeekDad] How To Use USB Drives With the Nexus 7 and Other Android Devices Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It

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  • Scene Graph Traversing Techniques

    - by Bunkai.Satori
    Scene Graph seems to be the most effective way of representing the game world. The game world usually tends to be as large as the memory and device can handle. In contrast, the screen of the device captures only a fraction of the Game World/Scene Graph. Ideally, I wish to process(update and render) only the visible game objects/nodes on per-frame basis. My question therefore is, how to traverse the scene graph so, that I will focus only on the game notes that are in the camera frustum? How to organize data so that I can easily focus only on the scene graph nodes visible to me? What are techniques to minimize scenegraph traversal time? Is there such way as more effective traversal, or do I have to traverse whole scene graph on per-frame basis?

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  • Sony Vaio Webcam

    - by Martin H
    I have a in-built webcam in my Sony Vaio VGN-FE21M. lsusb shows me the device Bus 001 Device 003: ID 0ac8:c002 Z-Star Microelectronics Corp. Visual Communication Camera VGP-VCC1 and it is working within Skype most of the time. Sometimes, however, lsusb shows me the exact same output, but trying to test my cam in v4l2ucp I get the error Unable to open file /dev/video0 No such file or directory A reboot fixes the problem but I just can't pinpoint what the difference is between a working and a not working webcam and the time/instance this occurs. It would probably be a fix if i could unmount and remount the cam, but how can I do this with in-built devices? Any other advice is welcome as well.

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  • Why is there a large discrepancy between the stackoverflow tag frequency and the TIOBE Index?

    - by Lo Sauer
    By recently looking at the TIOBE Programming Community Index (Sep 2012) I noticed the following order: C Java Objective-C C++ C# PHP When looking at the tag frequencies of stackoverflow however, the situation is as follows: C# Java PHP JS Android jquery (JS) iphone (Objective-C) C++ (Java takes the lead when accounting for Android tagged posts w/o a Java tag). JavaScript also likely has surpassed PHP in total numbers of programmers? I realize the tag-frequencies may not be the best indicator, but it is likely a sufficient measure nonetheless. What am I missing that explains this discrepancy, especially for ANSI C?

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  • Which iPhone/iPod Hardware to Support for iPhone Game

    - by ashes999
    I'm coming from a background of Android. I would like to figure out what kind of iBlah device hardware I need to support for iPhone game development. From my research, it seems that I need to support both iPod and iPhone. But which versions of hardware? is 3G still used? What about 3GS? For example, the -S phones seem to have dual core instead of single-core CPUs. I also worry about performance. In Android, I had a severely low-end phone, which meant pretty much anything that ran okay there ran okay on other phones. For iPhone, how do I figure out what to support in terms of performance?

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  • DIY Internet Radio Maintains Controls and Interface of Vintage Case

    - by Jason Fitzpatrick
    Updating an old radio for modern inputs/streaming audio isn’t a new trick but this DIY mod stands out by maintaining the original controls and interface style. Rather than replace the needle-style selector window with a modern text-readout or cover-flow style interface, modder Florian Amrhein opted to replace the old rectangular station selector with an LCD screen that emulates the same red-needle layout. Using the same knob that previously moved the needle on the analog interface, you can slide the digital selector back and forth to select Internet radio stations. Watch the video above to see it in action and hit up the link below for the build guide. 1930s Internet Radio [via Hack A Day] HTG Explains: Does Your Android Phone Need an Antivirus? How To Use USB Drives With the Nexus 7 and Other Android Devices Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder?

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  • 13.04 Logitech bluetooth speaker adapter pairing but no mixer output

    - by user1455622
    I had to change [General] Enable = Socket in /etc/bluetooth/audio.conf to get it to pair. But now that they are I don't get an output in pavucontrol. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/HFPAG on adapter /org/bluez/3855/hci0. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/HFPHS on adapter /org/bluez/3855/hci0. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/A2DPSource on adapter /org/bluez/3855/hci0. D: [pulseaudio] bluetooth-util.c: Registering /MediaEndpoint/A2DPSink on adapter /org/bluez/3855/hci0. E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists E: [pulseaudio] bluetooth-util.c: org.bluez.Media.RegisterEndpoint() failed: org.bluez.Error.AlreadyExists: Already Exists D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'disconnected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'connected' D: [pulseaudio] bluetooth-util.c: dbus: property 'State' changed to value 'connected' D: [pulseaudio] bluetooth-util.c: Unknown Bluetooth minor device class 0 D: [pulseaudio] module-card-restore.c: Not restoring profile for card bluez_card.C8_84_47_15_B7_34, because already set. I: [pulseaudio] module-card-restore.c: Restoring port latency offsets for card bluez_card.C8_84_47_15_B7_34. I: [pulseaudio] card.c: Created 2 "bluez_card.C8_84_47_15_B7_34" W: [pulseaudio] module-bluetooth-device.c: Profile has no transport D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event. I: [pulseaudio] card.c: Changed profile of card 2 "bluez_card.C8_84_47_15_B7_34" to off I: [pulseaudio] module.c: Loaded "module-bluetooth-device" (index: #22; argument: "address=C8:84:47:15:B7:34 profile=a2dp"). I: [alsa-source] alsa-source.c: Scheduling delay of 10,06ms, you might want to investigate this to improve latency... I: [alsa-source] ratelimit.c: 5 events suppressed I: [alsa-source] alsa-source.c: Overrun! I: [alsa-source] alsa-source.c: Increasing minimal latency to 2,00 ms D: [alsa-source] alsa-source.c: latency set to 20,00ms D: [alsa-source] alsa-source.c: hwbuf_unused=62008 D: [alsa-source] alsa-source.c: setting avail_min=442 What can I do to get it working? Regards,

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  • Send arbitrary commands to modem for info

    - by mydoghasworms
    I have a USB 3G data card and modem. According to the supplier, to check the data balance on the account, I must dial a number like *89# (or whatever) from the handset. The device appears as a ppp0 interface in my network devices. How does one go about issuing commands to the modem to send the commands and receive back the information? UPDATE: OK, I found some help here: http://www.linuxquestions.org/questions/linux-hardware-18/sending-at-commands-to-a-sms-modem-372445/, but firstly, there are 3 ttyUSB devices on my system, and I assume that one of them is the 3G modem, but how can I tell? Secondly, trying to echo something to two of them says that the device is busy, which stands to reason, because I am using it to connect to the internet. Some help, please?

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  • Skipping scheduled self-tests and predicting drive EOL

    - by Steve Madsen
    For a few weeks now, smartd has been reporting that it is skipping some of its scheduled self-tests on the weekends: Apr 24 18:29:32 calvin smartd[4758]: Device: /dev/sda, skip scheduled Offline Immediate Test; 40% remaining of current Self-Test. Apr 24 18:29:33 calvin smartd[4758]: Device: /dev/sdb, skip scheduled Offline Immediate Test; 50% remaining of current Self-Test. The drives in this RAID-1 array are set to run an offline test four times a day, a short self-test at 2am every day, and a long self-test on Saturdays at 2am. For some reason, it looks like the long self-test is taking longer, causing the other scheduled tests to be skipped. First question: is this a sign of likely drive failure? Then today, smartd reported that a self-test failed. Here is the output of smartctl -a /dev/sdb: smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen Home page is http://smartmontools.sourceforge.net/ === START OF INFORMATION SECTION === Model Family: Seagate Barracuda 7200.8 family Device Model: ST3250823AS Serial Number: 3ND1GNBC Firmware Version: 3.03 User Capacity: 250,059,350,016 bytes Device is: In smartctl database [for details use: -P show] ATA Version is: 7 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Sun Apr 25 13:15:34 2010 EDT SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x82) Offline data collection activity was completed without error. Auto Offline Data Collection: Enabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: ( 430) seconds. Offline data collection capabilities: (0x5b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. No Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 1) minutes. Extended self-test routine recommended polling time: ( 84) minutes. SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 047 039 006 Pre-fail Always - 168450357 3 Spin_Up_Time 0x0003 098 098 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 33 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 9 7 Seek_Error_Rate 0x000f 087 060 030 Pre-fail Always - 654745480 9 Power_On_Hours 0x0032 055 055 000 Old_age Always - 40141 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 51 194 Temperature_Celsius 0x0022 037 062 000 Old_age Always - 37 (0 17 0 0) 195 Hardware_ECC_Recovered 0x001a 047 039 000 Old_age Always - 168450357 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age Offline - 0 202 TA_Increase_Count 0x0032 100 253 000 Old_age Always - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 40131 - # 2 Extended offline Completed: read failure 30% 40129 379795511 # 3 Short offline Completed without error 00% 40084 - # 4 Short offline Completed without error 00% 40060 - # 5 Short offline Completed without error 00% 40036 - # 6 Short offline Completed without error 00% 40013 - # 7 Short offline Completed without error 00% 39990 - # 8 Extended offline Completed without error 00% 39977 - # 9 Short offline Completed without error 00% 39919 - #10 Short offline Completed without error 00% 39895 - #11 Short offline Completed without error 00% 39872 - #12 Short offline Completed without error 00% 39848 - #13 Short offline Completed without error 00% 39824 - #14 Short offline Completed without error 00% 39801 - #15 Extended offline Completed without error 00% 39789 - #16 Short offline Completed without error 00% 39754 - #17 Short offline Completed without error 00% 39732 - #18 Short offline Completed without error 00% 39707 - #19 Short offline Completed without error 00% 39683 - #20 Short offline Completed without error 00% 39660 - #21 Short offline Completed without error 00% 39636 - SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay. Given that this drive is about 4.5 years old, I am probably tempting fate by keeping it in service. SMART doesn't seem to get much respect as a reliable way to predict drive failure. What else can I use to get an early indication of drive failure?

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  • Why is it impossible to produce truly random numbers?

    - by Vinoth Kumar
    I was trying to solve a hobby problem that required generating a million random numbers. But I quickly realized, it is becoming difficult to make them unique. I picked up Algorithm Design Manual to read about random number generation. It has the following paragraph that I am fully not able to understand. Unfortunately, generating random numbers looks a lot easier than it really is. Indeed, it is fundamentally impossible to produce truly random numbers on any deterministic device. Von Neumann [Neu63] said it best: “Anyone who considers arithmetical methods of producing random digits is, of course, in a state of sin.” The best we can hope for are pseudo-random numbers, a stream of numbers that appear as if they were generated randomly. Why is it impossible to produce truly random numbers in any deterministic device? What does this sentence mean?

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  • Ask the Readers: Favorite Web Clipping Tool?

    - by Jason Fitzpatrick
    Bookmarking is great if you want a link to visit later, but what if you want to save the page itself for later perusal? This week we want to hear all about your favorite web clipping tool and how you use it to read what you want, when you want it. Web clipping tools are simple tools (browser extensions, bookmarklets, etc.) that make it easy to clip text and multimedia elements from web pages in order to archive them and/or read them at a later date. Whether you clip to a bursting at the seams web-notebook or you clip to send to your Kindle, we want to hear about your favorite tools and how they fit into your reading workflow. Sound off in the comments and then make sure to check back on Friday for the What You Said roundup where we highlight popular picks and clever tips. HTG Explains: How Hackers Take Over Web Sites with SQL Injection / DDoS Use Your Android Phone to Comparison Shop: 4 Scanner Apps Reviewed How to Run Android Apps on Your Desktop the Easy Way

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  • Turn off keyboard back-light Sony (VAIO SVF1521DCXW)

    - by KasiyA
    I have a Sony laptop and I want to turn keyboard back-light off. It doesn't have a shortcut function key for doing this on the keyboard . I can turn off it with VAIO Control Center in Windows but I don't know how can I turn it off in Ubuntu 14.04. There isn't available to me: /sys/devices/platform/sony-laptop/kbd_backlight doesn't exist on my machine. I have this folder /sys/devices/platform/sony-laptop/ and there is three folder one power folder and two shortcut-ed folder driver , subsystem and five file contains battery_care_health , battery_care_limiter , modalias , touchpad and event This is the output of running sudo modinfo sony-laptop: filename: /lib/modules/3.13.0-34-generic/kernel/drivers/platform/x86/sony-laptop.ko version: 0.6 license: GPL description: Sony laptop extras driver (SPIC and SNC ACPI device) author: Stelian Pop, Mattia Dongili srcversion: 5C6E050349475558A231C59 alias: acpi*:SNY6001:* alias: acpi*:SNY5001:* depends: intree: Y vermagic: 3.13.0-34-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: 50:0B:C5:C8:7D:4B:11:5C:F3:C1:50:4F:7A:92:E2:33:C6:14:3D:58 sig_hashalgo: sha512 parm: debug:set this to 1 (and RTFM) if you want to help the development of this driver (int) parm: no_spic:set this if you don't want to enable the SPIC device (int) parm: compat:set this if you want to enable backward compatibility mode (int) parm: mask:set this to the mask of event you want to enable (see doc) (ulong) parm: camera:set this to 1 to enable Motion Eye camera controls (only use it if you have a C1VE or C1VN model) (int) parm: minor:minor number of the misc device for the SPIC compatibility code, default is -1 (automatic) (int) parm: kbd_backlight:set this to 0 to disable keyboard backlight, 1 to enable it (default: no change from current value) (int) parm: kbd_backlight_timeout:meaningful values vary from 0 to 3 and their meaning depends on the model (default: no change from current value) (int) With the suggested command: sudo modprobe -r sony_laptop sudo modprobe -v sony_laptop kbd_backlight=0 Output was: insmod /lib/modules/3.13.0-34-generic/kernel/drivers/platform/x86/sony-laptop.ko kbd_backlight=0 It doesn't seem to affect the keyboard backlight. And also trying this command: sudo modprobe -v sony_laptop kbd_backlight_timeout=3 kbd_backlight=0 and doesn't seem to effect the keyboard backlight I also test it after restart laptop, And I didn't see any effect too. Important : By default, keyboard backlight is off; when I press a key it turns on and after 15 seconds it turns off again. It's the same result on battery and AC power I followed also http://ubuntuforums.org/showthread.php?t=2139597 and Keyboard backlighting not working on a Vaio VPCSB11FX but didn't work so.

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  • Development platform for 2D web and mobile games

    - by Robert Vella
    Is there a game development platform -- similar to Torque, or Unity -- which can be used to deploy 2D games on the following platforms: Web iOs Android Xbox Live Arcade (Preferred but not required) And which has an integrated or mature physics engine? Perhaps, even a built in editor? I've looked at the following possibilities but I've found something missing in each one. Of course in each case I may be guilty of misconception. Corona SDK (No web deployment, no windows support) Torque 2D (No web deployment) Flash + Flash Punk or Flixel (No native android deployment, and I'm not sure if it is stable on mobile platforms) Unity + SpriteManager2 (Not really optimised for 2D games, and I haven't seen enough advanced 2D examples -- like say platformers -- to really have any confidence in using it for something like this) Has anyone had any luck with this?

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  • Can't boot Ubuntu after install Ubuntu

    - by Ramprasad
    I have downloaded Ubuntu 12.04.1 LTS 32 bit, burnt it on DVD and tried to install on my PC. My PC running in Windows 7 Ultimate 32 bit mounted on C: drive. Now I want install Ubuntu along with my Windows 7. When I boot Ubuntu through CD, It boots and Ubuntu install window opens. Ask "Try Ubuntu" and "Install Ubuntu". I go on "Install Ubuntu". Then I go on install Ubuntu with Windows (First Option) - install. It shows some blank screen with some lines, and shows "Please Remove installation media and close tray and press enter". Then PC restarts and Run Windows 7 same as before normally. But Ubuntu is not installed. How to solve this problem and install Ubuntu on my PC properly? Note: I am a Android Developer. So I need to install Ubuntu for my Android Development purpose.

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  • links for 2011-01-06

    - by Bob Rhubart
    Coming to your town: Oracle Enterprise Cloud Summit During these full-day events, cloud experts will share real-world best practices, reference architectures, detailed customer case studies, and more. Events scheduled in cities around the world.  (tags: oracle otn cloud event) Webcast: Security and Compliance for Private Cloud Consolidation Roxana Bradescu, Senior Director for Oracle Database Security Products, discusses Oracle Database Security Solutions to securely consolidate data and meet compliance requirements within private cloud computing environments. Thursday, January 13, 2011. 10am PST | 1pm EST (tags: oracle cloud security) Answering Questions about Mobile Devices | The AppsLab "How do the numbers of Android and iOS users compare? How often are people switching? Where are all these BlackBerry and Nokia users? Do they plan to jump to Android or iOS? What about webOS? Is it relevant?" Some answers in this AppsLab survey. (tags: oracle otn enterprise2.0 mobilecomputing iphone blackberry android) Webcast: Achieve 24/7 Cloud Availability Without Expensive Redundancy Ashish Ray and Matthew Baier discuss Oracle’s Maximum Availability Architecture and Oracle Database 11g. (tags: oracle cloud highavailability webcast) Converting a PV vm back into an HVM vm (Wim Coekaerts Blog) "I wanted to convert one of my VMs that was based on a paravirt kernel into a vm that just boots as a regular hardware virt VM with a standard x86-64 kernel...It took me a little while to figure out the fastest way so now that I have it pretty much down I wanted to share the steps." - Wim Coekaerts (tags: oracle otn virtualization oraclevm) @OTN_Garage: Resources for VirtualBox 4.0 Rick "@OTN_Garage" Ramsey shares links to several resources for those with a VirtualBox jones. (tags: oracle otn virtualization virtualbox) 'Federal Service Bus' Helps Belgian Government Speak a Common Language - SOA in Action Blog "The first SOA-enabled application was developed in less than two months and was fully operational in approximately 10 weeks. In addition, new FSB modules are reusable for other Belgian e-government applications, saving both time and taxpayer dollars." - Joe McKendrick (tags: soa oracle) Show Notes: Architects in the Cloud (ArchBeat Podcast) The complete 4-part interview with Stephen G. Bennett and Archie Reed, the authors of "Silver Clouds, Dark Linings: A Concise Guide to Cloud Computing," is now available. (tags: oracle otn cloud podcast archbeat)

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  • Ubuntu on a netbook. Wait for 12.10?

    - by Kevin Duke
    My friend has a really slow 2 yr old Toshiba netbook with 1GB of RAM. She is annoyed how slow Windows Starter runs on it so I suggested switching to Ubuntu. Since 12.10 is due in a few days, I'm not sure if we should wait before installing Ubuntu or if we should install it now in order to use Unity 2D. For a low-end device, should we use Unity 2D or use Unity 3D on 12.10 since Unity 2D is no longer present in 12.10? I understand Unity 3D has been greatly improved but is it faster than Unity 2D in the LTS version for a low-spec'd device?

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  • 4 Alternatives to Google Drive for Linux

    - by Chris Hoffman
    We’ve covered using Google Drive on Linux with third-party software, but why bother jumping through those hoops? You can use a cloud storage service that officially supports Linux instead – several of Google Drive’s competitors do. Google may be leaving Linux users out, but other services like Dropbox, Ubuntu One, SpiderOak, and Wuala don’t ignore Linux users. They even offer more storage and other useful features, such as local encryption of your files. Our Geek Trivia App for Windows 8 is Now Available Everywhere How To Boot Your Android Phone or Tablet Into Safe Mode HTG Explains: Does Your Android Phone Need an Antivirus?

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  • HTML5 mobile game development vs. native game apps

    - by Vic Szpilman
    What is the current state of game engines, frameworks, libraries and conversions related to the HTML5 set of technologies (including CSS3 and JavaScript libraries such as RaphaelJS, Impact, gameQuery); and how does the best of that compare with developing a native app (especially for iOS and Android)? Especially in terms of performance, visuals and getting that "native feel". Thoughts on solutions such as Appcelerator and Corona SDK are also appreciated. In regards to Unity3D, is it possible to develop in it and still have the game be playable on a browser (such as current releases of Chrome or Firefox, at least) without any dependencies or having the user install anything (no unity web player). What I'm looking for is how to develop in web standards as to reach the maximum number of platforms (including outside mobile) while still retaining a native experience for mobile without having to implement the game anew for iOS and Android.

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  • Getting a TV Capture Card working

    - by Benny Hallett
    I'm new to Linux, and am trying to get my Capture Card working on 11.04. The only command that I know to run to find out any information is lspci, which tells me that I have 02:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 04) I've looked at using Me TV, but haven't worked out how to configure it for my card, or what I need to do to get it running. I'm not fussed on what software I use to run the Capture Card, but I've currently got only Me TV installed. Edit: When I run tvtime, I get the following errors: videoinput: Cannot open capture device /dev/video0: No such file or directory mixer: find error: Success mixer: Can't open mixer default, mixer volume and mute unavailable. mixer: Can't open device default/Line, mixer volume and mute unavailable. Segmentation fault

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  • Create dynamic buffer SharpDX

    - by fedab
    I want to set a buffer that is updated every frame but can't figure it out, what i have to do. The only working thing i have is this: mdexcription = new BufferDescription(Matrix.SizeInBytes * Matrices.Length, ResourceUsage.Dynamic, BindFlags.VertexBuffer, CpuAccessFlags.Write, ResourceOptionFlags.None, 0); instanceBuffer = SharpDX.Direct3D11.Buffer.Create(Device, Matrices, mdexcription); vBB = new VertexBufferBinding(instanceBuffer, Matrix.SizeInBytes, 0); DeviceContext.InputAssembler.SetVertexBuffers(1, vBB); Draw: //Change Matrices (Matrix[]) every frame... instanceBuffer.Dispose(); instanceBuffer = SharpDX.Direct3D11.Buffer.Create(Device, Matrices, mdexcription); vBB = new VertexBufferBinding(instanceBuffer, Matrix.SizeInBytes, 0); DeviceContext.InputAssembler.SetVertexBuffers(1, vBB); I guess Dispose() and creating a new buffer is slow and can be done much faster. I've read about DataStream but i do not know, how to set this up properly. What steps do i have to do to set up a DataStream to achieve fast every-frame update?

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  • mdadm raid5 recover double disk failure - with a twist (drive order)

    - by Peter Bos
    Let me acknowledge first off that I have made mistakes, and that I have a backup for most but not all of the data on this RAID. I still have hope of recovering the rest of the data. I don't have the kind of money to take the drives to a recovery expert company. Mistake #0, not having a 100% backup. I know. I have a mdadm RAID5 system of 4x3TB. Drives /dev/sd[b-e], all with one partition /dev/sd[b-e]1. I'm aware that RAID5 on very large drives is risky, yet I did it anyway. Recent events The RAID become degraded after a two drive failure. One drive [/dev/sdc] is really gone, the other [/dev/sde] came back up after a power cycle, but was not automatically re-added to the RAID. So I was left with a 4 device RAID with only 2 active drives [/dev/sdb and /dev/sdd]. Mistake #1, not using dd copies of the drives for restoring the RAID. I did not have the drives or the time. Mistake #2, not making a backup of the superblock and mdadm -E of the remaining drives. Recovery attempt I reassembled the RAID in degraded mode with mdadm --assemble --force /dev/md0, using /dev/sd[bde]1. I could then access my data. I replaced /dev/sdc with a spare; empty; identical drive. I removed the old /dev/sdc1 from the RAID mdadm --fail /dev/md0 /dev/sdc1 Mistake #3, not doing this before replacing the drive I then partitioned the new /dev/sdc and added it to the RAID. mdadm --add /dev/md0 /dev/sdc1 It then began to restore the RAID. ETA 300 mins. I followed the process via /proc/mdstat to 2% and then went to do other stuff. Checking the result Several hours (but less then 300 mins) later, I checked the process. It had stopped due to a read error on /dev/sde1. Here is where the trouble really starts I then removed /dev/sde1 from the RAID and re-added it. I can't remember why I did this; it was late. mdadm --manage /dev/md0 --remove /dev/sde1 mdadm --manage /dev/md0 --add /dev/sde1 However, /dev/sde1 was now marked as spare. So I decided to recreate the whole array using --assume-clean using what I thought was the right order, and with /dev/sdc1 missing. mdadm --create /dev/md0 --assume-clean -l5 -n4 /dev/sdb1 missing /dev/sdd1 /dev/sde1 That worked, but the filesystem was not recognized while trying to mount. (It should have been EXT4). Device order I then checked a recent backup I had of /proc/mdstat, and I found the drive order. md0 : active raid5 sdb1[0] sde1[4] sdd1[2] sdc1[1] 8790402048 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4] [UUUU] I then remembered this RAID had suffered a drive loss about a year ago, and recovered from it by replacing the faulty drive with a spare one. That may have scrambled the device order a bit...so there was no drive [3] but only [0],[1],[2], and [4]. I tried to find the drive order with the Permute_array script: https://raid.wiki.kernel.org/index.php/Permute_array.pl but that did not find the right order. Questions I now have two main questions: I screwed up all the superblocks on the drives, but only gave: mdadm --create --assume-clean commands (so I should not have overwritten the data itself on /dev/sd[bde]1. Am I right that in theory the RAID can be restored [assuming for a moment that /dev/sde1 is ok] if I just find the right device order? Is it important that /dev/sde1 be given the device number [4] in the RAID? When I create it with mdadm --create /dev/md0 --assume-clean -l5 -n4 \ /dev/sdb1 missing /dev/sdd1 /dev/sde1 it is assigned the number [3]. I wonder if that is relevant to the calculation of the parity blocks. If it turns out to be important, how can I recreate the array with /dev/sdb1[0] missing[1] /dev/sdd1[2] /dev/sde1[4]? If I could get that to work I could start it in degraded mode and add the new drive /dev/sdc1 and let it resync again. It's OK if you would like to point out to me that this may not have been the best course of action, but you'll find that I realized this. It would be great if anyone has any suggestions.

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  • Ubuntu Touch Official Hardware? [duplicate]

    - by user1628
    This question already has an answer here: Where can I get a device with 'Ubuntu for phones' pre-installed? 1 answer I really like the look of Ubuntu touch and I want it ASAP, however, I am NOT willing to buy a device simply to port ubuntu touch on it. I don't want to void all warranties and take any risks. Therefore, I am really just waiting for official ubuntu touch hardware (devices made for ubuntu touch). I can't find any rumours or estimated release dates online, in fact, I can't find out anything at all. Can anyone? If so, what and where? When do you think they'll be official hardware? What price do you think it'll be? Do you think canonical/ubuntu will manufacture it themselves? Thanks, Zach

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  • Configure IPv6 on your Linux system (Ubuntu)

    After the presentation on IPv6 at the first event of the Emtel Knowledge Series and some recent discussion on social media networks with other geeks and Linux interested IT people here in Mauritius, I thought that I should give it a try (finally) and tweak my local network infrastructure. Honestly, I have been to busy with contractual project work and it never really occurred to me to set up IPv6 in my LAN. Well, the following paragraphs are going to shed some light on those aspects of modern computer and network technology. This is the first article in a series on IPv6 configuration: Configure IPv6 on your Linux system DHCPv6: Provide IPv6 information in your local network Enabling DNS for IPv6 infrastructure Accessing your web server via IPv6 Piece of advice: This is based on my findings on the internet while reading other people's helpful articles and going through a couple of man-pages on my local system. Let's embrace IPv6 The basic configuration on Linux is actually very simple as the kernel, operating system, and user-space programs support that protocol natively. If your system is ready to go for IP (aka: IPv4), then you are good to go for anything else. At least, I didn't have to install any additional packages on my system(s). We are going to assign a static IPv6 address to the system. Hence, we have to modify the definition of interfaces and check whether we have an inet6 entry specified. Open your favourite text editor and check the following entries (it should be at least similar to this): $ sudo nano /etc/network/interfaces auto eth0# IPv4 configurationiface eth0 inet static  address 192.168.1.2  network 192.168.1.0  netmask 255.255.255.0  broadcast 192.168.1.255# IPv6 configurationiface eth0 inet6 static  pre-up modprobe ipv6  address 2001:db8:bad:a55::2  netmask 64 Of course, you might have to adjust your interface device (eth0) or you might be interested to have multiple directives for additional devices (eth1, eth2, etc.). The auto instruction takes care that your device is enabled and configured during the booting phase. The use of the pre-up directive depends on your kernel configuration but in most scenarios this might be an optional line. Anyways, it doesn't hurt to have it enabled after all - just to be on the safe side. Next, either restart your network subsystem like so: $ sudo service networking restart Or you might prefer to do it manually with identical parameters, like so: $ sudo ifconfig eth0 inet6 add 2001:db8:bad:a55::2/64 In case that you're logged in remotely into your PC (ie. via ssh), it is highly advised to opt for the second choice and add the device manually. You can check your configuration afterwards with one of the following commands (depends on whether it is installed): $ sudo ifconfig eth0eth0      Link encap:Ethernet  HWaddr 00:21:5a:50:d7:94            inet addr:192.168.160.2  Bcast:192.168.160.255  Mask:255.255.255.0          inet6 addr: fe80::221:5aff:fe50:d794/64 Scope:Link          inet6 addr: 2001:db8:bad:a55::2/64 Scope:Global          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 $ sudo ip -6 address show eth03: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000    inet6 2001:db8:bad:a55::2/64 scope global        valid_lft forever preferred_lft forever    inet6 fe80::221:5aff:fe50:d794/64 scope link        valid_lft forever preferred_lft forever In both cases, it confirms that our network device has been assigned a valid IPv6 address. That's it in general for your setup on one system. But of course, you might be interested to enable more services for IPv6, especially if you're already running a couple of them in your IP network. More details are available on the official Ubuntu Wiki. Continue to configure your network to provide IPv6 address information automatically in your local infrastructure.

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  • Partner Blog: aurionPro SENA - Mobile Application Convenience, Flexibility & Innovation Delivered

    - by Darin Pendergraft
    About the Writer: Des Powley is Director of Product Management for aurionPro SENA inc. the leading global Oracle Identity and Access Management specialist delivery and product development partner. In October 2012 aurionPro SENA announced the release of the Mobile IDM application that delivers key Identity Management functions from any mobile device. The move towards an always on, globally interconnected world is shifting Business and Consumers alike away from traditional PC based Enterprise application access and more and more towards an ‘any device, same experience’ world. It is estimated that within five years in many developing regions of the world the PC will be obsolete, replaced entirely by cheaper mobile and tablet devices. This will give a vast amount of new entrants to the Internet their first experience of the online world, and it will only be via these newer, mobile access channels. Designed to address this shift in working and social environments and released in October of 2012 the aurionPro SENA Mobile IDM application directly addresses this emerging market and requirement by enhancing administrators, consumers and managers Identity Management (IDM) experience by delivering a mobile application that provides rapid access to frequently used IDM services from any Mobile device. Built on the aurionPro SENA Identity Service platform the mobile application uses Oracle’s Cloud, Mobile and Social capabilities and Oracle’s Identity Governance Suite for it’s core functions. The application has been developed using standards based API’s to ensure seamless integration with a client’s on premise IDM implementation or equally seamlessly with the aurionPro SENA Hosted Identity Service. The solution delivers multi platform support including iOS, Android and Blackberry and provides many key features including: • Providing easy to access view all of a users own access privileges • The ability for Managers to approve and track requests • Simply raising requests for new applications, roles and entitlements through the service catalogue This application has been designed and built with convenience and security in mind. We protect access to critical applications by enforcing PIN based authentication whilst also providing the user with mobile single sign on capability. This is just one of the many highly innovative products and services that aurionPro SENA is developing for our clients as we continually strive to enhance the value of their investment in Oracle’s class leading 11G R2 Identity and Access Management suite. The Mobile IDM application is a key component of our Identity Services Suite that also includes Managed, Hosted and Cloud Identity Services. The Identity Services Suite has been designed and built specifically to break the barriers to delivering Enterprise, Mobile and Social Identity Management services from the Cloud. aurionPro SENA - Building next generation Identity Services for modern enterprises. To view the app please visit http://youtu.be/btNgGtKxovc For more information please contact [email protected]

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