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• Silverlight 4 Training Course

  - by guybarrette

  A Silverlight 4 training course is now available on Channel 9.  Here’s the course description: The Silverlight 4 Training Course includes a whitepaper explaining all of the new Silverlight 4 RC features, several hands-on-labs that explain the features, and a 8 unit course for building business applications with Silverlight 4. The business applications course includes 8 modules with extensive hands on labs as well as 25 accompanying videos that walk you through key aspects of building a business application with Silverlight. Key aspects in this course are working with numerous sandboxed and elevated out of browser features, the new RichTextBox control, implicit styling, webcam, drag and drop, multi touch, validation, authentication, MEF, WCF RIA Services, right mouse click, and much more! You can download it here var addthis_pub="guybarrette";

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• Detect damage done by virus

  - by user38471

  Hey, this morning after I went to college a virus infected my pc without any user interaction at my end. When I came home my computer was completely frozen and infected with lots of trojans. I have not typed anything important since returning so keys cannot be logged. However I want to know exactly when my computer crashed from the time of infection to see what could potentially be done remotely by a hacker. The virus my pc was diagonosed with was "fakespypro" http://www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Win32%2fFakeSpypro on a fully updated windows 7 installation with firewall enabled. My computer was connected to an internal dorm room network, so probably that has had to do something with it. Any further information about how I could backtrace this virus infection or ways to discover what data might be stolen would be greatly appriciated.

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• How do I throttle a command in a terminal window?

  - by To Do

  I needed to run convert with a lot of images at the same time. The command took quite a while but this doesn't bother me. The issue is that this command rendered my computer unusable while the command was running (for about 15 minutes). So is it possible to throttle the command by limiting resources (processor and memory) to the command, directly from the command line? This can only work if I add something to the same line before pressing Enter because once I start the process the computer slows so much that it is impossible for example to switch to "System monitor" and reduce priority. Edit: top and iotop results I managed to run top and sudo iotop >iotop.txt while doing one of these convert operations. (The iotop.txt file produced is difficult to read) Results of top: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 14275 username 20 0 4043m 3.0g 1448 D 7.0 80.4 0:16.45 convert Results of iotop: [?1049h[1;24r(B[m[4l[?7h[?1h=[39;49m[?25l[39;49m(B[m[H[2JTotal DISK READ: 1269.04 K/s | Total DISK WRITE:[59G0.00 B/s (B[0;7m TID PRIO USER DISK READ DISK WRITE SWAPIN(B[0;1;7m IO(B[0;7m COMMAND [3;2H(B[m2516 be/4 username 350.08 K/s 0.00 B/s 0.00 % 0.00 % zeitgeist-datahub 7394 be/4 username 568.88 K/s 0.00 B/s 77.41 % 0.00 % --rendere~.530483991[5;1H14275 idle username 350.08 K/s 0.00 B/s 37.49 % 0.00 % convert S~f test.pdf[6;2H2048 be/4 root[6;24H0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/3:2] [5G1 be/4 root[7;24H0.00 B/s 0.00 B/s 0.00 % 0.00 % init Furthermore, even after the process ends, the computer does not return to the previous performance. I found a way around this by running sudo swapoff -a followed by sudo swapon -a

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• Installed ubuntu over windows vista..cant reinstall windows

  - by Marcuz J Hinojoz

  I recently used the "compress hard drive" option within windows. i got the horid "boot mngr is compressed" after the restart. i tried booting my system back to windows vista but it doesnt read the cd that came with my computer. i tried going into system recovery and going back to a previous date but it didnt work. i kept pressing f8 but nothing. i installed ubuntu(the ubuntu cd worked but windows didnt?) i installed ubuntu so i could atleast get in my computer, and i still wasnt able to install windows from there. my hard drive got reformatted to a ext4? and windows cant install because it doesnt read it? im not sure, but its very frustrating. my computer is a gateway gt5668e windows vista home premium with sp1. im a graphic designer and use programs such as photoshop and cinema 4d to do my projects..i have been at a unfortunate halt with my work and i am really bummed out and dont know what to do... any help?

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• teamviewer display is slow to refresh

  - by brunoais

  I'm using teamviewer from time to time to connect my portable computer with my desktop computer when I need to check on something (personal use). One of the main things I've been noticing is that it is quite slow transfering the screen updates that keep happening. This happens more frequently when I'm moving full windows or when I open a window or when watching a small movie clip. I've tested the lowest maximum p2p speed I ever got in the last week between both and it is the desktop's upload speed of 6MB/s with the ping of 40ms (usually ~15 ms). With this I was expecting to have very sharp image and fast transfer speeds which is not what is happening. Just to clarify, both computer's individual core's CPU is not reaching its peak (25%) while teamviewer is active, so the encryption and decryption is not the cause. Why my connection between both computers so slow?

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• Install Windows XP/7 without a CD drive when the BIOS does not support booting from USB devices

  - by David Pearce

  I have a computer that has a dead CD drive in it and it seriously needs a new installation of Windows (XP is on it now, but Windows 7 does not sound that bad). At first I tried making a bootable USB drive, but it does not look like the BIOS supports booting directly from a USB drive. Is there some sort of boot loader that I can put onto the hard drive first and boot from the USB drive using that? If not, how else can I re-install Windows on the computer? Edit: The only bootable device the computer has it the network with PXE (although I have no idea how to do that) and it's three internal hard drives

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• how to install Ubuntu on a fresh hard drive

  - by Herman Wiegman

  I attempted to install Ubuntu from a USB stick to my Intel 4 3GHz computer with 80GB HDD. The installer was doing well, then it said something to the effect of "errors on the source USB, or the target HDD" The recommendation was to download the installer again. I suspected my HDD was going bad so I figured I would investigate. What I found was a partially formatted 80GB HDD. I repartitioned it via a different computer. Now a fresh copy of the Ubuntu USB installer is not able to move past the start-up screen (it freezes). I was able to purchase a new / clean HDD, but still the fresh copy of the installer still locks up after the initial opening screen (locks up after about 2 screens worth of installations steps). Does this sounds like a HDD NTHS issue or a CPU/hardware/memory issue? or should I move to a CD image file rather than my USB stick? Now my computer is stuck... no OS.. no way to go back to Windows (upgrade OS CD only). Any insight would be greatly appreciated. Stuck in Schenectady Herman Wiegman

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• How do I set up a proxy server in Xubuntu?

  - by Dolphin

  NOTICE: I am completely allowed to do this. This is not meant for accessing sites I am not supposed to go on I know that most threads with "Proxy" in the title have to do with getting to sites they're not supposed to go on. I hope that I can get this to be as easy as possible. I hope it can be as easy as setting up an OpenSSH server. What happened My dad has just screwed something up in our router settings, and I can't access Google anymore because if it. I need to be able to access Google. He doesn't like me in the router because he thinks I will make it worse. (I am sick of Bing and Yahoo) So I want to set up a proxy server that will allow me to work around what he screwed up. What I want to do I want to host it on a computer in my grandpa's house, and access it with my computer at my dad's house. It's running Xubuntu. I want it to work with the Mozilla Firefox on my computer at my dad's house running Ubuntu 11.10. How can I set this up? This is only temporary until he fixes whatever he did.

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• Firewall GPO not applying despite being enumerated by gpresult

  - by jshin47

  I have a need to open up the admin$ share on all of my domain's client PC's and I am trying to do so using group policy. I defined computer policy for Windows Firewall with Advanced Security in a policy object linked to the appropriate container and added the appropriate rules. However, they are not being applied! I feel like I have tried all of the obvious steps: I've checked gpresult and the resulting set of policy is the way that I would expect it to look. I've gpupdate /force and gpupdate /sync on a few client computers, but no matter what I do they don't seem to respond to my changes. I know that other computer policies in the GPO are being applied so it is strange that these are not. I have also disabled exceptions on clients in the firewall GPO, but that doesn't seem to be applying either. Here is a screenshot of the firewall.cpl from a client: Basically, although other options in the same GPO ARE applied for computer policy, the firewall settings seem to be ignored.

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• Tell me why I should bother using Linux if it's all about problems getting the OS to install or work properly? [closed]

  - by Vilhjalmur Magnussin

  Why should I spend day's trying to get Ubuntu to either install and/or work properly? I'm using an Acer Timeline X laptop and if I install 10.04 the wireless doesn't work, and if I try installing 11.04 it either won't install, or if it installs it's full of bugs causing my computer to freeze all the time. So please, I'm all open ears. Someone give me one or two good reasons to continue wasting time (in hope it eventually works) before I decide to focus my time on other things like productivity (using Windows like I've been doing successfully the last 10 years). This is the second time I give Ubuntu a try, the first time was in 2010 using Ubuntu Studio and Ubuntu Desktop, and it ended with me shifting back to Windows since I had spent more time getting everything to work than actually working while trying Ubuntu. I really don't understand why it needs to be like this. Why go on trying when all I see is forums full of discussions about problems which people are having difficulties fixing. Or maybe there is just one special type of computer which works well with Linux? Would very much like to know which computer that is. SO please, if it's not to much trouble I really want to here from someone who has something good to say about going through all this trouble just to get a working environment up and running since I already have a working environment up and running called Windows. Thanks, Villi.

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• Sync files between two users on Windows-7 Enterprise

  - by Zachary

  I'm running Windows-7 enterprise on a dell Laptop, and I'd like to sync the entire user directory structure between two users. Background: I am an existing user on the computer, and soon I'll be sharing the computer with an employee. I want everything from my account to overwrite the other, while anything he does is mirrored on mine. I'm not worried about security because nothing vital is on the computer. Both accounts are administrators, and I have already tried to use hard links to accomplish this. However the prompt leaves me with "Access Denied". Is what I'm trying to do possible, and if so what steps must be done to accomplish it?

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• Good PPA for ffmpeg

  - by teeks99

  Its annoying that the default ffmpeg in ubuntu's repositories is outdated and hobbled for legal reasons, however, there's a great page on the forums that walks you through building it from scratch: http://ubuntuforums.org/showthread.php?t=786095 (I also add in support for --enable-libdc1394 --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex when I build, which is nice, but not essential.) Anyway, I'm getting set to setup a computer lab running ubuntu for a multimedia class I'm teaching, and I was wondering if there was PPA out there that did something similar to what is available when building from scratch. The things I absolutely need from it are up-to-date libxvid, libx264, libfaac, and libmp3lame support plus the un-encumbered stuff (vorbis, theora, vpx). Is there a PPA out there that provides something like this?

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• ubuntu to ubuntu backup in internal network

  - by amirash

  hey, i got my development "home" server witch is ubuntu 10, i brought today a computer in order to make a backup to this computer (the development server does also to him self backups every day but im paranoaid so i want to have two backups just in case on diffrent computers) what is the best way to backup the system core of the development server (like norton ghost) & do a full & incrmnt backup of him to the new computer that ive brought? rsync? rdiff? scp? clonezilla?

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• Advanced Analytics Oracle Data Mining - NEW 2-Day Training Course

  - by Mike.Hallett(at)Oracle-BI&EPM

  A NEW 2-Day Oracle University (OU) Instructor Led Course on Oracle Data Mining has been developed for partners and customers to learn more about data mining, predictive analytics and knowledge discovery inside the Oracle Database. Oracle Data Mining, provides data mining algorithms that run native for high performance in-database model building and model deployment. This OU course is a great way to learn the advantages and benefits of "big data analytics"; mining data, building and deploying "predictive analytics" all inside the Oracle Database and to work with OBI. To register for a class, click here, then click on View Schedule to see the latest scheduled classes and/or submit your information expressing interest in attending a class.

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• Laptop freezes on Wireless Mouse Adapter attach/detach

  - by Sergiy Byelozyorov

  I am using Microsoft Wireless Notebook Optical Mouse 3000 with Toshiba Satellite Pro P300-1CG. Recently I have installed Windows 7 64-bit. Now once in a while when I plug-in or plug-out wireless mouse adapter, the computer freezes (image stays on the screen, but the computer is not responsive). I have noticed that it mostly happens after I recover my computer from sleep mode. To continue using laptop I have to shut it down by pressing and holding power button for 7 seconds and then booting it up again. What can be done to prevent this?

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• Detecting damage done by virus

  - by user38471

  This morning after I went to college, a virus infected my PC without any user interaction at my end. When I came home my computer was completely frozen and infected with lots of trojans. I have not typed anything important since returning so keys cannot be logged. However I want to know exactly when my computer crashed from the time of infection to see what could potentially be done remotely by a hacker. The virus my pc was diagnosed with was "fakespypro" on a fully updated Windows 7 installation with firewall enabled. My computer was connected to an internal dorm room network, so probably that has had to do something with it. Any further information about how I could backtrace this virus infection or ways to discover what data might be stolen would be greatly appreciated.

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• Can I directly open an MMF Cash Drawer through RJ-11 port?

  - by roviuser

  My aunt bought this cash drawer at an auction recently and has tasked me with figuring how to open it via a computer. We have the key (pictured) and can open it manually, but I'd like to be able to plug it directly into a computer and open it via some sort of program or script. It has a built in rj-11 cord coming out of the back of it. Initial research shows that it might usually be used with a printer, but I want to be able to connect it directly to the computer. Edit: this needs to be able to work with windows 7. Edit2: http://imgur.com/a/czEMs imgur gallery of the innards.

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• Have Windows Automatically Login Without Entering Your Password

  - by deadlydog

  If you are like me and don't want to have to enter your password each time Windows loads, you can have Windows start up without prompting you to enter a user name or password.  The simple (and BAD) way to do this is to simply not have a password on your user account, but that’s a big security risk and will allow people to easily remote desktop into your computer. So, first set a password on your windows account if you don’t already have one.  Then select Run... from the start menu (or use Windows Key + R to open the Run window) and type control userpasswords2, which will open the user accounts application.   On the Users tab, clear the box for Users must enter a user name and password to use this computer, and click on OK. An Automatically Log On dialog box will appear; enter the user name and password for the account you want to use to automatically log into Windows.  That's it.    You may also want to make sure your screen saver is not set to prompt you for a password when it exits either. Now your computer is secure without getting in your way.

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• Can I lose files when changing security on an XP drive within Windows 7?

  - by Will

  Hard to come up with a title for this one, sheesh. Have a friend whose computer went down. He asked me to get all his data off his drive. His old computer was running XP. So, I've plugged it into my Windows 7 computer. When I attempt to open up his Documents and Settings folder, I get prompted to elevate in order to "permanently get access to this folder." If I do this, will I be able to access the files in this directory, or will all the current files be lost? I may be overly paranoid about this, but I can't find any information about exactly what will happen when I do this. TIA.

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• Setup IPv6 over IPv4 tunnel in VPN

  - by bfmeb

  Let me explain my szenario: I have a linux server A. A is reachable in a VPN. So if I am connected to the VPN over Internet I can successfully ping A. Server A is connected to a Router B. Router B has a local ipv6 address and there are resources (each of them with a local ipv6 address) connected to Router B. After I am connected to VPN, I am able to use ssh to have access over A. Now I can use the ping6 command to ping the Router B or one of its connected resources. This works fine. The ping fails if I try to ping router B on my computer. Overview: My Computer -- VPN -- Server A(ipv4) -- Router B(ipv6) -- Ressource A(ipv6) On resource A runs for example a HTTP-Server. My question is: How can I access Resource A (for example with HTTP) on my to VPN connected computer? Is it possible? Should I setup a tunnel device? Sorry for this inexpertly explanation, but I am new to network stuff!

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• Install Ubuntu in UEFI mode (unable to boot from USB)

  - by Adele

  I recently bought a Dell Inspiron 15R SE with Windows 8 (64 bit) pre-installed (UEFI supported). I want to install Ubuntu in dual boot with Windows 8. I tried to follow all instruction here : https://help.ubuntu.com/community/UEFI And here : Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported) So, I set Secure Boot to "off" into BIOS and I disable Fast Startup as described here : http://www.eightforums.com/tutorials/6320-fast-startup-turn-off-windows-8-a.html I created a bootable USB key for Ubuntu (Ubuntu 13.10 64bits international Edition) with Unetbootin. The problem is I am unable to boot from the USB key. The computer tries to boot into infinite loop. I also tried to boot from USB with "Legacy Boot" option instead of UEFI. In this case, the computer says there are no bootable devices. Of course, I tried to boot from my USB key on an other computer having normal BIOS and it works perfectly. Have you ideas about what I need to do to be able to boot from USB ? Thanks in advance for your help, Adele

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• Windows undetectable after interrupted chkdsk

  - by Felthragar

  I have a computer that is running Windows XP. For some reason, the other day it wouldn't start giving me the following message: "ntoskrnl.exe is missing or corrupt" So I put the XP disc in the tray and fired up the repair console and ran the following: chkdsk /r It was on for about eight hours and it got to about 52% I believe. Then there was a power outage and the computer shut down (obviously). Today when I was booting it, it isn't even detecting there's an OS anymore. If I boot the computer with no cd in the tray it says: "Reboot and select a proper Boot device or Insert Boot Media in selected Boot device and press a key" If I run the repair console, or the xp installation program it isn't finding any OS installations. Any ideas on what to do next? Any help is appreciated. Thanks! Update: After turning boot-time diagnostics on, I got this message when booting without cd (instead of the previous one): "Couldn't open drive multi(0)disk(0)rdisk(0)partition(2)"

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• Trust

  - by mprove

  I sense traffic of this blog w/o a present reason. Hmm. What about this,  brief musings about trust: Each software, each website, each social platform, each community building effort is a matter of trust building. You make a social promise to continue the effort, and to care for the commitment of the users or community members. It is easy to offer more to your community. On the other hand, it is quite difficult or impossible to take something away, or to close down or end the product or community without disappointing someone. cheers,Matthias

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• Why does my mic boost automatically go to 100 on every boot?

  - by Ben

  When my computer turns on, it automatically sets the "mic boost" sound setting to 100. This causes a loud static sound in my speakers. I can manually go to alsamixer and turn the mic boost down manually, but I would prefer it if I didn't have to do this every time I turn the computer on. I've tried running sudo alsactl store after fixing the settings, and this does save them, but I have to run sudo alsactl restore to restore the settings. This means that I have to manually fix the sound every time I start the computer anyway, so it isn't really a fix. I tried putting sudo alsactl restore in my startup programs, but that didn't seem to fix anything. I'm running Ubuntu 12.04, but I started having this problem before upgrading from 11.10. I'm using a Sony Vaio laptop. I'm not really sure what made it start; it seemed like I just started having the problem randomly one day. Any help would be appreciated! Edit: here is the output from running amixer: http://paste.ubuntu.com/1060080/

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• Google I/O 2012 - High Performance HTML5

  Google I/O 2012 - High Performance HTML5 For years we built web apps that far outpaced the capabilities of the browsers they ran in. Just as the browsers were catching up HTML5 came on the scene - video and audio, canvas, SVG, app cache, localStorage, @font-face, and more. Now the browsers are racing to stay ahead of the wave that's building as developers adopt these new capabilities. Is your HTML5 app going to ride the wave or be dashed on the rocks leaving users stranded? Learn which HTML5 features to seek out and which to avoid when it comes to building fast HTML5 web apps. This session will be live captioned. From: GoogleDevelopers Views: 91 1 ratings Time: 01:02:07 More in Science & Technology

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