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• How can I fix my xvinfo?

  - by YumYumYum

  How can i fix my X server/driver? $ xvinfo X-Video Extension version 2.2 screen #0 no adaptors present Additional info: $ uname -a Linux desktop 2.6.32-33-generic #70-Ubuntu SMP Thu Jul 7 21:13:52 UTC 2011 x86_64 GNU/Linux $ lspci 00:00.0 Host bridge: Intel Corporation Device 0100 (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Device 1503 (rev 05) 00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b5) 00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b5) 00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b5) 00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation Device 1c4a (rev 05) 00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 05) 01:00.0 PCI bridge: Integrated Technology Express, Inc. Device 8892 (rev 10) 04:00.0 USB Controller: NEC Corporation Device 0194 (rev 04) Follow up: It seems in 64-bit its a mess doing existing approach. Therefore, after upgrading to 12.04 64-bit this problems in same hardware is resolved (of-course, i have now other drivers problem)

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• Internet unusably slow with Realtek Semiconductor Co., Ltd. RTL8111/8168B card

  - by user42424

  So I have recently installed Ubuntu 11.10 for a dual boot with wind 7. After the install I had like 300 updates, so I installed them. At first I could use the internet, although it was extremely slow. However now I cannot, sometimes it will load and others it will simply time out. When I try to download something it will either take forever or will not at all. This is a wired system. On Windows side my speeds are fine. Any help would be greatly appreciated. Also like I said I am new to Linux/Ubuntu so please be nice. One last thing, I also installed 11.10 for same dual boot on my laptop, and wireless speed is the same as on Windows? Only the wired desktop gives me the problem? Hear is some hardware info.. Hope it helps. Mobo: Gigabyte GA=880GMA- AMD / CPU: AMD Phenom (tm) IIx4 965 / 16 GB Ram / Realtek PCIe GBE Family Controller / Cisco Linksys E2000 / Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) / eth0 Link encap:Ethernet HWaddr 50:e5:49:33:64:cf inet addr:192.168.1.118 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::52e5:49ff:fe33:64cf/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:76722 errors:0 dropped:76722 overruns:0 frame:76722 TX packets:49692 errors:0 dropped:65 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:107956638 (107.9 MB) TX bytes:4342553 (4.3 MB) Interrupt:44 Base address:0x2000 thanks to roadmr problem solved! I powered down PC, un plugged power from pc end, waited a few (maybe 3)minutes. plugged power back in, pushed and held power button for 30 + seconds. Let go, powered on PC, and my Internet is fine! downloads and web speed blaze, just like on my Win 7 boot, maybe even faster. Problem Solved, Thanks to all!! **

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• Computer Says No: Mobile Apps Connectivity Messages

  - by ultan o'broin

  Sharing some insight into connectivity messages for mobile applications. Based on some recent ethnography done my myself, and prompted by a real business case, I would recommend a message that: In plain language, briefly and directly tells the user what is wrong and why. Something like: Cannot connect because of a network problem. Affords the user a means to retry connecting (or attempts automatically). Mobile context of use means users use anticipate interruptibility and disruption of task, so they will try again as an effective course of action. Tells the user when connection is re-established, and off they go. Saves any work already done, implicitly. (Bonus points on the ADF critical task setting scale) The following images showing my experience reading ADF-EMG Google Groups notification my (Android ICS) Samsung Galaxy S2 during a loss of WiFi give you a good idea of a suitable kind of messaging user experience for mobile apps in this kind of scenario. Inline connection lost message with Retry button Connection re-established toaster message The UX possible is dependent on device and platform features, sure, so remember to integrate with the device capability (see point 10 of this great article on mobile design by Brent White and Lynn Hnilo-Rampoldi) but taking these considerations into account is far superior to a context-free dumbed down common error message repurposed from the desktop mentality about the connection to the server being lost, so just "Click OK" or "Contact your sysadmin.".

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• Virtualbox install 12.04 guest: "pae not present"

  - by Peter.O

  I get this message while trying to install Ubuntu 12.04 as a guest in VirutalBox 4.1.18, on an Ubuntu 10.04 host. This kernel requires the following feature not present on the CPU: pae Some host specs: The host's kernel is: Linux 2.6.32-41-generic-pae GNU/Linux lscpu (host): Architecture: i686, CPU op-mode(s): 32-bit, 64-bit grep --color=always -i PAE /proc/cpuinfo   does show pae in its output. The 12.04 iso used is: ubuntu-12.04.0-desktop-i386.iso As a comparison/check, I downloaded and installed Linux Mint 13 Cinnamon to the same host on the exact same VM (I just changed the .iso image). It worked fine. Its iso is: linuxmint-13-cinnamon-dvd-32bit.iso It seems (to me) that I have pae.. what is going on here? Update: I had assumed that Linux Mint also required pae (being Ubuntu based), but I've just run;   grep --color=always -i PAE /proc/cpuinfo   in the Mint VM.   It showed no output.   So it seems the issue may lie with VirtualBox.   If that is the case, how can I get Virtualbox into pae mode?

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• Impossible quandrary involving UCK, graphics card, and Nvidia drivers

  - by InkBlend

  I have a computer that I want to install Ubuntu on. It is an older gaming computer with a Nvidia graphics card. When I attempt to boot any unmodified Linux distribution onto it, I get a "Boot error" message, which I assume is because the computer uses a discrete graphics card, which the Linux kernel does not have support for. Ordinarily, that would not be a problem, as I would just plug the monitor into the VGA port built in to the motherboard. However, this particular model of motherboard does not have an on-board graphics connector, so I am stuck with using the graphics card connection. That further would not be a problem; all I would have to do would be to use UCK to create a customized Ubuntu image that included the graphics drivers. Except for the fact that the Nvidia Linux drivers must be installed on a computer with a Nvidia graphics card present. So while using UCK, the driver installer fails with a message stating that there is no Nvidia graphics card present. How do I get Ubuntu on my desktop computer?

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• How to plan/manage multi-platform (mobile) products?

  - by PhD

  Say I've to develop an app that runs on iOS, Android and Windows 8 Mobile. Now all three platforms are technically in different program languages. The only 'reuse' that I can see is that of the boxes-and-lines drawings (UML :) charts and nothing else. So how do companies/programmers manage the variation of the same product across different platforms especially since the implementation languages differ? It's 'easier' in the desktop world IMO given the plethora of languages and cross-platform libraries to make your life easier. Not so in the mobile world. More so, product line management principles don't seem to be all that applicable - what is same and variant doesn't really matter - the application is the same (conceptually) and the implementation is variant. Some difficulties that come to mind: Bug Fixing: Applications maybe designed in a similar manner but the bug identification and fixing would be radically different. A bug on iOS may/may-not be existent for that on Android. Or a bug fix approach on one platform may not be the same on another (unless it's a semantic bug like a!=b instead of a==b which would require the same 'approach' to fixing in essence Enhancements: Making a change on one platform would be radically different than on another Code-Design Divergence: They way the code is written/organized, the class structures etc., could be very different given the different implementation environments - leading to further reuse of the (above) UML models. There are of course many others - just keeping the development in sync and making sure all applications are up to the same version with the same set of features etc. Seems the effort is 3x that of a single application. So how exactly does one manage this nightmarish situation? Some thoughts: Split application to client/server to minimize the effect to client side only (not always doable) Use frameworks like Unity-3D that could take care of the cross-platform problem (mostly applicable to games and probably not to other applications etc.) Any other ways of managing a platform line? What are some proven approaches to managing/taming the effects?

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• 12.10 Wireless networking

  - by user108594

  I downloaded ubuntu 12.10 using WUBI and cannot connect to the internet. I removed it and downloaded ubuntu 12.04 still cannot connect. This I assume rules out the program being the problem. I reinstalled 12.10. When loaded I get the same message W/red (x) stating Internet not connected. I went to the Settings drop down box and it does not reveal the network list but (enable networking has a ck mark). Am running a HP Laptop with a w/7/64 OS that has a kill switch that indicates (orangeno connection) I downloaded 12.10 on my desktop (on the same network) and everything OK. I tried to follow the instructions in the help menu but got lost and confused . Sincerely Dan Additional Info per request Broadcom 802.11b/g Wlan Internal pc [hp laptop] P.S. I've been out of town for about a month. TKS for your gitback I did install 12.10 via cd and everything ok,but retried alongside 7 and unable to connect to internet,also took laptop and hard wired using ethernet cable and everything ok. stumped again and running out of ideas!!!

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• Why can't I boot from portable HD?

  - by user11239

  I've been trying to get Ubuntu 10.04-LTS 32-bit desktop installed onto a 250GB FreeAgent Go drive from Seagate. I've been able to install onto a USB flash drive and boot successfully from this. I have installed Ubuntu onto the jump drive using Universal USB Installer, and this was a total success in terms of getting Ubuntu to run off a flash drive. I was unable to accomplish this with the portable HDD. I then, following instructions, attempted to install the OS onto the HDD once booted up from the flash drive. After installing the OS on the HDD, the computer would simply not load the OS when the HDD medium was selected for booting from. However, as there is no System-> Preferences-> Removable Drives and Media I could not complete this step. Is this vital? How do I do this under Ubuntu 10.04? I have formmated the MBR on the HDD and repeated the above, still with no success. I have also browsed some forums that mention there may be something related to spin-up speeds, but nothing explained in detail the issue or how to solve it, and I'm not familiar enough with system booting to understand if this could be an issue. Basically, what I'm trying to do is get Ubuntu to boot off the HDD, I've attempted several things, and the result is, after selecting the HDD from BIOS, the OS never starts booting (after waiting upwards of ten minutes). I just have a white cursor blinking. I can always get it to boot from the jump drive. Related question

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• Failing Screen Resize Method

  - by StrongJoshua

  So I want my game to draw to a specific "optimal" size and then be stretched to fit screens that are a different size. I'm using LibGDX and figured that I could just draw everything to a FrameBuffer and then resize that buffer to the appropriate size when drawing it to the actual display. However, my method does not work, it just results in a black screen with the top right quarter of the screen white.Intermediary is the FBO, interMatrix is a Matrix4 object, and camera is an OrthographicCamera. @Override public void render() { // update actors currentStage.act(); //render to intermediary buffer batch.setProjectionMatrix(interMatrix); intermediary.begin(); batch.begin(); currentStage.draw(); batch.flush(); intermediary.end(); //resize to actual width and height Sprite s = new Sprite(intermediary.getColorBufferTexture()); s.flip(true, false); batch.setProjectionMatrix(camera.combined); batch.draw(s.getTexture(), 0, 0, width, height); batch.end(); } These are the constructors for the above mentioned objects (GAME_WIDTH and HEIGHT are the "optimal" settings, width and height are the actual sizes, which are the same when running on desktop). intermediary = new FrameBuffer(Format.RGBA8888, GAME_WIDTH, GAME_HEIGHT, false); interMatrix = new Matrix4(); camera = new OrthographicCamera(width, height); interMatrix.setToOrtho2D(0, 0, GAME_WIDTH, GAME_HEIGHT); Is there a better way of doing this or can is this a viable option and how do I fix what I have?

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• Is it worth replacing mouse by standalone trackpad for heavy code-editing? [on hold]

  - by heltonbiker

  I recently got more interested in improving my tools, workspace and worflow. The first sting came with a sore finger due to a crappy keyboard, and then after some research I fell in love with the "mechanical keyboard is what you need" doctrine, bought one (cherry MX Brown if you're curious), and am very happy with the results. Currently I am replacing my previous text editor (Geany) with Sublime Text 3, and am also very happy and feeling much more powerful and professional :) Well, but while I re-read all the ancient debates about VIM vs whatever-else, the following excerpt from a blog post got me thinking again about the mouse vs keyboard, and the "moving around from the very home row" (in VIM) versus gesturing away with the tiny and unstable mouse cursor: Reaching for a mouse may indeed slow you down, but developers are commonly on machines where the trackpad is a micro-hand movement away. Most novice programmers can click on a character on screen faster than an expert Vimmer can type 20jFp; or LkEEE or /word or any other nasty way Vimmers have to use. The point of a mouse is to make arbitrary on screen jumps efficient, and it’s very good at doing that. Don’t you ever think you can beat a mouse. Well, although there is some bitterness in this statement, it makes a lot of sense, and EVEN MORE if you consider your direct input to be a TRACKPAD conveniently placed in front of your spacebar (which oddly is where I like to put my mouse, rotated 90° ccw, due to a serious tendonitis in my right shoulder, already healed, but you knod...). So, the question is: Has anyone replaced mouse by a standalone trackpad, to work in code editing in a desktop machine (that is, with a sandalone keyboard)? Was it worth the change?

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• getting started as a web developer [closed]

  - by kmote

  I have over 10 years of programming experience building (Windows-based) desktop applications and utilities (VC++, C#, Python). My goal over the next year is to start transitioning to web application development. I want to teach myself the fundamental tools and technologies that would be considered essential for building professional, online, interactive, visually-stunning, data-driven web apps -- the kind described in Google's recently released "Field Guide: Building Great Web Applications". So my question is, what are the primary, most commonly-used technologies that seasoned professionals will need in their tool belt in the coming years? My plan was to start coming up to speed in Javascript, HTML5, & CSS, and then to do a deep dive into ASP.NET and Ajax, along with SQL DBs. (I was surprised to not be able to find a single book at Amazon with a broad, general scope like this, which caused me to start second-guessing this approach.) So, seasoned professionals: am I on the right track? Are there some glaring omissions in my list? Or some unnecessary inclusions? I would welcome any book suggestions along these lines as well.

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• Where I'll Be At JavaOne 2012

  - by Geertjan

  Fun and games for me at JavaOne 2012. Below are the sessions/BOFs/tutorials I'll be attending. The items in red are the sessions and BOFs where I'll be speaking, either as the main/only speaker or as a supporting speaker in someone else's presentation, while the other items (except for the NetBeans booth duties and mini presentations, which are included below) are items I'm interested in and so will be sitting in the audience: Sunday: NetBeans Day Monday: 10:00 - 12:00 TUT4801: Make Your Clients Richer: JavaFX and the NetBeans Platform 12:20 - 12:30 Mini Presentation in OTN Lounge: What's New in NetBeans IDE? 13:00 - 14:00 CON7050: How My Life Would Have Been So Much Better If We Had Used the NetBeans Platform 14:30 - 14:40 Mini Presentation in OTN Lounge: NetBeans and Java EE 15:00 - 16:00 CON4038: Project EASEL: Developing and Managing HTML5 in a Java World 16:30 - 17:15 BOF6151: NetBeans.Next: The Roadmap Ahead 17:30 - 18:15 BOF3332: Lessons Learned in Writing a PDF-to-JavaFX Converter for NetBeans 18:30 - 19:15 BOF4920: Runtime Class Reloading for Dummies Tuesday: 9:30 - 11:30 NetBeans Booth 11:30 - 12:30 CON6139: Lessons Learned in Building Enterprise and Desktop Applications with the NetBeans IDE 13:00 - 14:00 CON4387: Bringing Mylyn to NetBeans and OSGi, Bridging Their Worlds 14:30 - 14:40 Mini Presentation in OTN Lounge: NetBeans Java Editor 15:30 - 17:30 NetBeans Booth 17:30 - 18:15 BOF3665: Custom Static Code Analysis 18:30 - 19:15 BOF5806: Doing JSF Development in the NetBeans IDE  Wednesday: 8:30 - 9:30 CON5132: NetBeans Plug-in Development: JRebel Experience Report 10:00 - 11:00 CON2987: Unlocking the Java EE 6 Platform 11:30 - 12:30 CON10140: Delivering Bug-Free, More Efficient Code for the Java Platform 13:00 - 14:00 CON3826: Patterns for Modularity: What Modules Don’t Want You to Know 14:30 - 14:40 Mini Presentation in OTN Lounge: NetBeans Platform 15:00 - 16:00 CON3160: Dynamic Class Reloading in the Wild with Javeleon Thursday: 12:30 - 13:30 CON4952: NetBeans Platform Panel Discussion 14:00 - 15:00 CON11879: Getting Started with the NetBeans Platform There are several sessions/BOFs I would have liked to be able to attend, but because of clashes with other sessions that I need to see slightly more urgently, I won't be able to attend those, unfortunately. Will be a busy but interesting time, as always! The entire list of NetBeans-oriented sessions can be found here: http://netbeans.org/community/articles/javaone/2012/index.html

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• Five years old Ubuntu system - dist-upgrades always went fine, however some tasks remain

  - by knb

  I have a PC with a current Ubuntu distribution installed. I've upgraded many times since 5.10. It always went well, however some tools or features were kind of left behind in a unsatisfactory state: grub to grub2 - is it an really necessary to switch the boot loader some time to grub2. Upgrading this scares me abit. I still have ext3 devices - is it worth upgrading to ext4? should I wait for btrfs? hibernation and suspend- it only worked in 5.10, since 6.04 it was messed up. Should I really care? Any chance to repair this myself? Simply by cleanup or hacking config files. It is a desktop PC after all. So energy saving functionality is not really needed. I am using vmware workstation 6.5 and the latest kernel that supports it is 2.6.32. This is my default kernel now, ignoring 2.6.35. Am I missing anything important in the new kernel now?

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• Help w/ iPad 1 performance for tile-based DOM Javascript game

  - by butr0s

  I've made a 2D tile-based game with DOM/Javascript. For each level, the map data is loaded and parsed, then lots of tiles ( elements) are drawn onto a larger "map" element. The map is inside of a container that hides overflow, so I can move the map element around by positioning it absolutely. Works a treat on desktop browsers, and my iPad 2. My problem is that performance is really bad on iPad 1. The performance hit is directly related to all the tile elements in my map, because when I remove or reduce the number of tiles drawn, performance improves. Optimizing my collision detection loop has no effect. My first thought was to batch groups of tiles into containers, then hide/show them based on proximity to the player, however this still causes a huge hiccup when the player moves and a new group of tiles is displayed (offscreen). Actually removing the out-of-sight elements from the DOM, then re-adding them as necessary is no faster. Anyone know of any tips that might speed up DOM performance here? My map is 1920 x 1920 pixels, so as far as I know should be within the WebKit texture limit on iOS 5/iPad. The map is being moved with CSS3 transforms, and I've picked all the other obvious low-hanging fruit.

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• Acer Aspire One 725 - missing graphic card driver for Radeon HD 6290?

  - by Melon

  Recently I bought an Acer Aspire One 725 Netbook and installed Ubuntu 12.10 on it. I bought it, because it can run HD movies and has Full HD on external VGA port. However, movies from youtube have a really slow framerate. If you open three tabs in Opera (for example g-mail, youtube and askubuntu) it gets really laggy. My suspicion is that the driver for graphic card is missing. When I check the System->Details->Graphics the driver is unknown. After running lspci | grep VGA I get this output: 00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Device 980a From what I see, I have a AMD C70 processor integrated with (or something similar) AMD Radeon HD 6290. Has anyone had the same problem? Do you know which drivers need to be installed for the graphics to work properly? On official Acer page there are only drivers for Win7 and Win8... Update: I have tried installing fglrx but I get the following error (either I don't have libraries or someone didn't make a clean build before release ;) /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function ‘KCL_MEM_AllocLinearAddrInterval’: /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:2124:5: error: implicit declaration of function ‘do_mmap’ [-Werror=implicit-function-declaration] /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:2124:13: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function ‘kasInitExecutionLevels’: /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:4159:5: error: ‘cpu_possible_map’ undeclared (first use in this function) /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:4159:5: note: each undeclared identifier is reported only once for each function it appears in /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:4159:5: warning: left-hand operand of comma expression has no effect [-Wunused-value] Update 2: After fixing the erros in compilation, ubuntu acts bizarre and unstable (no left icon panel, no upper panel, cannot run any programs, I only see desktop)

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• Dual displays not working with Xinerama in Ubuntu 12.04

  - by user68489

  I just upgraded from Ubuntu 10.10 to 12.04. I had been using a display configuration just like the one described at http://bitkickers.blogspot.com/2009/08/rotate-just-one-monitor-with.html without any problems under 10.10. I have an nvidia Quadro FX 380 and have upgraded to the latest drivers (295.49). Everything appears to be fine when the system first boots up. However, after logging in, the left screen goes black, and the right screen displays what should be displayed on the left screen. Logging into Ubuntu 2D somewhat improves things. The left screen correctly displays the left portion of the desktop but the right screen contains a duplicate view of the left screen. Turning off Xinerama and enabling TwinView appears to fix the issues but does not allow the right monitor to be rotated. Since the display problems start to occur only after logging on, I thought it might have to do with carryover user configuration from 10.10 but the problems persist even when logging in as a guest. Clicking on System Settings - Displays results in the error message "Could not get screen information - RANDR extension is not present." Any help would be greatly appreciated.

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• How to get "Fn" keys to work (Asus 4830T)? (specificly, the "suspend" key)

  - by Pointy

  I've got an Asus 4830T onto which I've just re-installed 12.04 because I installed an SSD. I was running 12.04 before too, which had been upgraded over a few releases. At some point on that old install, I had gotten all the "Fn" keys to work, or at least all the ones I cared about. (Oh except I think the screen brightness keys never worked.) I have no recollection of what I did. Anyway now things are fine, and some of the Fn keys work: the one to turn of the trackpad and the one to turn off wireless (grr I hate that one). However, the "suspend" key for some reason does not work. Now the system will suspend and resume just fine, but I'm having to do it from the menu. Is there an easy (or hard) way to make those work? I'm running straight Ubuntu but with Xfce installed as my normal desktop. (In other words, it's not Xubuntu, though I doubt it matters.) I recall at some point having found some arcane mapping mechanism to bind the Fn keys to actions, but I can't find it now. (I'm perfectly OK with editing weird files; I'm a long-time Unix user.) (Very long-time.)

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• Duplicated menu, panel indicators and taskbar

  - by Mykro

  Ubuntu 12.04. The first time I log into Gnome Classic I get a duplicate of every menu, panel indicator and taskbar entry. If I log out and back in again I now have three copies. Log out and log in, four copies and so forth. What would cause this? I can't see any obvious duplicates in the process list: $ ps -A | grep 'gno\|org\|nau' 27439 tty7 00:00:18 Xorg 27610 ? 00:00:00 gnome-keyring-d 27621 ? 00:00:00 gnome-session 27674 ? 00:00:00 gnome-settings- 27709 ? 00:00:07 gnome-panel 27720 ? 00:00:00 gnome-fallback- 27726 ? 00:00:04 nautilus 27736 ? 00:00:00 polkit-gnome-au 28281 ? 00:00:00 gnome-screensav 29016 ? 00:00:00 gnome-terminal 29021 ? 00:00:00 gnome-pty-helpe If it helps, I was recently trying the Nouveau drivers but have now reverted to NVIDIA. Configuration is Separate X Window, Xinerama enabled. Unity is fine, so the problem is limited to the Classic desktop. I haven't had any luck googling these particular symptoms so any tips would be really appreciated. Thanks!

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• Ubuntu 12.04 Very slow especially with Android Studio

  - by Dew

  I have an old laptop with the following specification: Memory: 485 MiB, Processor: Genuine intel CPU T2300 @ 1.66 GHz ×2, OS Type: 32 bit, Disk: 78.1 GB, I installed on it Ubuntu 12.04 LTS and I noticed that the overall system is very slow in responding. I tried to search about that in the internet and I found some articles talking about how to make Ubuntu 12.04 LTS run fast I applied all what they said including download LXDE desktop environment and then nothing different in the system response time. Then I need to develop some android applications so, I download Android Studio (Beta) 0.8.6. The problem became worse than before whenever I tried to open the Android Studio the screen is frozen for some minutes then it took time to download the projects and initialize the work space also, when I tried to move the cursor he is move very slowly. When I tried to run my first application on the AVD it took three hours and still not run yet. I delete the Android Studio and install it again several times, I was trying to solve the problem but still nothing change. Please if you have any suggestions that may help me make my laptop and Android Studio work faster I will appreciate it for you. Thank you in advance.

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• Whole continent simulation [on hold]

  - by user2309021

  Let's suppose I am planning to create a simulation of an entire continent at some point in the past (let's say, around 0 A.D). Is it feasible to spawn a hundred million actors that interact with each other and their environments? Having them reproduce, extract resources, etc? The fact is that I actually want to create a simulation that allows me to zoom in from a view of the entire continent up to a single village, and interact with it. (Think as if you could keep zooming in the campaign map of any Total War game and the transition to the battle map was seamless, not a change of the "game mode"). By the way, I have never made a game in my entire life (I have programmed normal desktop applications, though), so I am really having trouble wrapping my head around how to implement such a thing. Even while thinking about how to implement a simple population simulator, without a graphical interface, I think that the O(n) complexity of traversing an array and telling all people to get one year older each time the program ticks is kind of stupid. Any kind help would be greatly appreciated :) EDIT: After being put on hold, I shall specify a question. How would you implement a simulation of all basic human dynamics (reproduction, resource consumption) in an entire continent (with millions of people)?

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• Distributing my Application inside a Debian Virtual Machine Image-- How to meet GPL obligations?

  - by bdk

  I have a Linux application I've developed, and I have created a standalone VMWare Image that people can download to try out the application without needing to install and configure a Linux Server. I created this VMWare Image by starting with a base Debian system, installing a bunch of packages and then configuring all the packages and daemons my application depends on. Upon load, the VMWare Image boots right into an X Server running only my application and no Window manager, so its more of a "Virtual Appliance" than a normal Linux Desktop environment. Users generally will never see a command prompt or any application other than my own. (My application itself I have a handle on the licensing issues of) Now I would like to distribute this image, but I'm not sure how to meet my GPL (and other licenses the various Debian components are released under) Obligations. As I understand it, I have two primary obligations to meet. Providing Copyright and License Information for each component I use. As I understand it, all the information I am required to present is located in the /usr/share directory in the Debian, but since my users generally will never touch a console or terminal, they will never see this. Does providing a text file containing a concatenation of all the files inside /usr/share meet this obligation Making source code available for all components I distribute. Since I am not creating the image from source, but from binary packages, I can't provide the actual source code that results in exactly my image being generated. Does providing an ftp mirror and an offer to send that mirror on DVDs of the Debian source debs for all the packages I use meet this obligation? Anything Else I'm required to do to legally distribute this image?

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• Kubuntu not showing eth0

  - by Laurbert515

  I just installed Kubuntu 12.04.2 and do not have an internet connection. I also cannot access the Desktop and only have the terminal. When I enter xlcock I get Error: Can't open display:. I believe this is because I do not have the correct drivers and need to download them ... using the internet which I can't access. So here's what's going on ... ifconfig gives: lo Link ecap: Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overrruns:0 frame:0 TX packets:16 errors:0 dropped:0 overrruns:0 frame:0 collisions:0 txqueuelen:0 RX bytes:1296 (1.2 KB) TX bytes:1296 (1.2 KB) wlan0 Link encap: Ethernet HWaddr 68:17:29:58:49:4a UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:16 errors:0 dropped:0 overrruns:0 frame:0 TX packets:16 errors:0 dropped:0 overrruns:0 frame:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lspci -nnk gives: 07:00.0 Network Controller [0280] Intel Corporation Centrino Wireless-N 2230 [8086:0887] (rev c4) Subsystem: Intel Coporation Centrino Wireless-N 2230 BGN [8086:4062] Kernel driver in use: iwlwifi Kernel modules: iwlwifi 0d:00.0 Ethernet Controller [0200]: Atheros Communications Inc. AR8161 Gigabit Ethernet [1969:1091] (rev 10) Subsystem: Toshiba America Info Systems Device [1179:fa77] I believe this means that it is using the ethernet connection but thinks it is a wireless connection. sudo lshw -class network gives: *-network description: Wireless interface product: Centrino Wireless=N 2230 ... *network UNCLAIMED description: Ethernet controller product: AR8161 Gigabit Ethernet I want to get the internet working so I can fix the GPU driver, etc. but I can't seem to get it working even though I have my ethernet cable plugged in (and I'm sure it is working).

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• Mix10 is in history, Windows Phone 7 is here!

  MIX10was really a fantastic conference for Telerik! We had great talks, many customers stopped by our booth and we've got a lot of great feedback for our Silverlight Controls. Thank you for stopping by and sharing your opinion! So now, that the MIX is over, there is one question left: What Telerik will develop for theWindows Phone 7? We had this question on the booth over and over again and it is no doubt that the WP7 development is a hot topic now. All we can sayat this momentis that Yes, we are looking into this and we actually have some of our controls already partially working with WP7 internally :) You know that the Silverlight version for WP7 is Silverlight 3 and it has some very good additions over it in order to support the phone hardware - like webcam, mic, accelerometer, etc. If you missed the conference and the sessions- here is a list of videos thatwill get you started: Building Windows Phone Applications with Silverlight, Part 1 Mike Harsh Building Windows Phone Applications with Silverlight, Part 2 Peter Torr The good thing isthat our controls will needvery few tweaks in order to be *compiled* against the WP7 Silverlight runtime. But, the more interesting part is actually what are the scenarios that our controls will be used in. How different they will be from the desktop version of the SL? This is where we need your feedback - drop as a line and let us know what are your expectations in this area. Do you need something specific, a feature or a new control that you like to use, or maybe you have a specific scenario that you want to share. Nowthe ball is in your hands - write on the forums, send us a ticket, or just leave your comment on WP7 developmentbelow! Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Option Button in Keyboard Layout > Input Sources is not pressable

  - by user98647

  I would like to set the Caps-lock key as a Compose key, which you do, as far as I remember, by pressing the Options Button in Keyboard Layout Input Sources and then enabling the appropriate option there. That Button is not pressable though since I switched to 12.10. It did work in previous releases of Ubuntu. gnome-control-center puts out these errors, when I click on Keyboard Layout: (gnome-control-center:3645): common-cc-panel-WARNING **: Could not find current language '?\u0003C!\u007f' in the treeview (gnome-control-center:3645): common-cc-panel-WARNING **: locale '"en_US.UTF-8"' isn't valid I'm not sure if the errors are related though, maybe they are related to the "interface switching to chinese bug" which seems surprisingly widespread: Language changed to Chinese, how do I change it back? Language Support has an unwanted Chinese language option Nautilus Folders Turned Chinese Desktop 12.04 gnome/cairo suddenly in Chinese Unwanted Chinese language got set in system settings I cannot set my system back to English from Chinese Language Gnome-classic language turned into Chinese, how do I change it back to English? Strange display language in gnome shell I'm not sure they are related to this bug, but I just wanted to mention it, maybe it helps!

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• Error -12 hibernation image. Not enough free memory (sometimes)

  - by user99306

  I am having a problem with hibernation in Ubuntu 12.10, it had worked fine in 12.04. When I try and hibernate it sometimes appears to hibernate throws up an error and returns me to the desktop. The error I get is this: PM: Creating hibernation image: PM: Need to copy 375021 pages PM: Normal pages needed: 117957 + 1024, available pages: 110205 PM: Not enough free memory PM: Error -12 creating hibernation image Now I understand what the error means, but it doesn't make sense. My swap file is 5GB and is seldom ever used as I have 4GB of RAM. I know it is recommended to have 1.5 times more swap than RAM etc, but space doesn't seem to be the problem, despite the error. For example, I rarely use more than about 25%-30% of my RAM, yet still have the problem above. Moreover on a fresh boot and login, with no programs open and using only about 12% of RAM, I can get the above error - yet at other times I can hibernate whilst using 25% of my RAM. Also if I keep trying to hibernate, it eventually does after throwing up the above error four or five times. A successful hibernation looks like this: PM: Creating hibernation image: PM: Need to copy 295511 pages PM: Normal pages needed: 95534 + 1024, available pages: 132627 Is there some setting that I need to tweak or something I need to do before hibernating to avoid this problem? I guess the question could be better interpreted as: Is there some way of safely flushing the buffers and the cache before hibernation? Other than attempting to hibernate several times until it is successful! Thanks in advance.

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