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• Dual 7950, freezes during startup

  - by Hiro

  I have two identical video cards right now. Xubuntu will boot up no problem if I only have one card installed. If I install the 2nd card it will just hang midway thru the loading screen. Regardless of which card I use and which position on the motherboard, it will freeze if I have both installed. I've tried installing the proprietary drivers, both fglrx and fglrx-updates, still freezes in the same spot. Uninstalled those and went back to the default ones. The only way I can get a terminal is by booting into failsafe mode. Booting using 13.10 i386 on a USB stick gives me some errors related to what I think is the 2nd video card: [drm:r600_ring_test] ERROR radeon: ring 1 test failed (scratch(0x850C)=0xCAFEDEAD) [drm:r600_dma_ring_test] ERROR radeon: ring 3 test failed (0x02FFFF6B) radeon 0000:0200.2 disabling GPU acceleration"

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• Digitally Signing a XAP Silverlight

  Ive been referring a lot of people lately to the steps to sign a XAP. So I decided to post an excerpt I wrote about signing Silverlight XAP files in the Silverlight 4 Whitepaper on Channel 9 here to help spread the word. The signing process is important if you are creating an elevated trust out of browser application because it helps: Reassure your users that the application is authentic Allow updates to elevated trust applications Elevated trust out-of-browser applications enable developers...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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• Password Authentication Problems

  - by Bobby Hathorn

  I am new to Ubuntu, am extremely delighted with the performance and speed, as compared to Windows 7-However, I messed up, I think...when I booted my USB disc, I set a password, as directed, and when Ubuntu booted up I tried to reset my password via User Accounts to "None". Now, the Password Authentication window prevents me from downloading software, (Audacity and my Ubuntu updates. Also, I've tried to boot into GRUB and the Recovery Console, as directed; however, the PC bypasses GRUB and boots into Ubuntu instead. Also, when attempting to use the terminal as directed to change the password, I'm given a password prompt there also. If the problem is on my end, could you email/reset my password? My PC is an emachines EL1358G. I am otherwise happy with Ubuntu!

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• New Java EE 6 Hands-On lab, Devoxx-approved!

  - by alexismp

  A new Java EE 6 HOL (Hands-On Lab) was successfully used yesterday at Devoxx with a room packed with enthusiast conference participants. This is new material which covers a lot of Java EE ground in a single document. As it is the case for most GlassFish-related labs, the list of software requirements is dead-simple and short: a recent JDK (6 or 7) and NetBeans 7.x ("Java EE" or "All") which comes with GlassFish. Of course GlassFish can also be downloaded separately and used from other IDEs such as Eclipse and IntelliJ or even (Emacs). The didactic nature of the HOL document should make it useful for anyone interested in learning Java EE 6 on their own time and pace. If you have feedback about the content or about GlassFish, make sure you voice your concerns (or praises) to the GlassFish Users alias as indicated in the document. Feedback will be taken into account in the form of updates to the document as well as enhancements to GlassFish (ideally in 3.1.2).

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• Is there ongoing work in the kernel team to improve battery life under linux?

  - by leousa

  I have read in some forums that the kernel team is working on improving battery life and energy efficiency in linux. Unfortunately our community really lags behind windows and mac in that regard. I would like to read about the reasons why this difference exists with other platforms. Is it purely due to closed hardware specs from vendors or does it has to be with kernel design issues? Apple devices with unix cores have amazing battery times, but they also design their own hardware...just want to understand this issues in a less technical way I know that recent kernel updates in Ubuntu have improved the battery life in most computers, but I was wondering if there is still development going on and where can I read more about it. Thanks in advance

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• Ubuntu not booting properly

  - by user86998

  I just bought an Asus EeePC with Ubuntu 12.04 installed on it. After turning it on and performing the updates it didn't boot properly and showed a screen saying it was working on low graphics mode, but I wasn't able to get to the GUI. After some searching, I tried renaming xorg.conf.failsafe to xorg.conf using the mv command. After rebooting I got to the Ubuntu GUI but it was stuck to a 800x600 resolution, track pad not working and not detecting my Wi-Fi. After rebooting again it goes straight to console tty1. I'm completely new to Ubuntu and Linux. If some one can give help? I think the best would probably be to reinstall it from scratch, but I don't know how.

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• Get and install Nvidia GeForce 8400 GS driver

  - by williepabon

  Recently, I changed my OS kernel from 10.04 to 11.10 (bugs), but after doing it, the video driver for the 8400 GS disappeared (was there in 10.04). I worked out the same procedure I did to install it in 10.04, mainly, sudo apt-get --purge remove nvidia-current sudo apt-get --purge autoremove sudo add-apt-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get -y install nvidia-current but it didn't work even though the commands seemed to install the driver without problems. Right now my machine is working with the standard drivers, as shown. williepabon@WP-WrkStation:~$ sudo lshw -C display [sudo] password for williepabon: *-display description: VGA compatible controller product: nVidia Corporation vendor: nVidia Corporation physical id: 0 bus info: pci@0000:05:00.0 version: a2 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list rom configuration: driver=nouveau latency=0 resources: irq:16 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:cc80(size=128) memory:dfc00000-dfc7ffff Any suggestions to correct the problem? Thanks

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• How To Sideload Modern Apps on Windows 8

  - by Chris Hoffman

  The average Windows 8 user can only download apps that Microsoft has approved from the Windows Store. Windows 8 offers two ways to sideload unapproved apps, which are intended for developers and businesses with internal apps. These methods cannot be used by the average geek to install unapproved apps from the web. Windows 8’s new interface takes the Apple iOS approach of forbidding unapproved software, not the Android approach of allowing all users to enable sideloading. Note: This only applies to Modern apps in the new Windows 8 interface, not on the desktop. Windows desktop applications can be installed normally. However, you can’t install any desktop applications on devices running Windows RT. 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 How To Delete, Move, or Rename Locked Files in Windows

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• processing gamestate with a window of commands across time?

  - by rook2pawn

  I have clients sending client updates at a 100ms intervals. i pool the command inputs and create a client command frame. the commands come into the server in these windows and i tag them across time as they come in. when i do a server tick i intend to process this list of commands i.e. [ {command:'duck',timestamp:350,player:'a'}, {command:'shoot',timestamp:395,player:'b'}, {command:'move', timestamp:410,player:'c'} {command:'cover',timestamp:420,player:'a'} ] how would i efficiently update the gamestate based on this list? the two solutions i see are 1) simulate time via direct equation to figure out how far everyone would move or change as if the real gameupdate was ticking on the worldtick..but then unforseen events that would normally trigger during real update would not get triggered such as powerups or collissions 2) prepare to run the worldupdate multiple times and figure out which commands get sent to which worldupdate. this seems better but a little more costly is there a canonical way to do this?

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• Can I use my VirtualBox 3.* VMs with VirtualBox 4.0? If so, how come the repository doesn't have it?

  - by ximbim

  I had the following repository for virtualbox in my /etc/apt/sources.list: deb ttp://download.virtualbox.org/virtualbox/debian maverick non-free Then I found out there was a new version when I opened it today (the program prompted me with a window to manually download it from Oracle's site). Then I tried sudo apt-get update && sudo apt-get upgrade and got nothing. Here you have a way to add virtualbox-4.0 to your apt-get, but the problem is that it isn't updating, meaning I would have the two installed. I'm also worried if I'll have to do something like that each time it updates since that would defeat the point of apt-get. I've been using virtualbox with the apt-get update for more than a year now and this is the first time it has happened, so I was wondering if there would be a way to just update my current installation.

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• Is there a way to sync my laptop's Ubuntu install with a jumpdrive Ubuntu install?

  - by trezy

  So I'm doing a fresh install of Ubuntu on my laptop right now. I also have a jumpdrive with Ubuntu installed on it with a persistent setup. What I would like is to be able to plug the jumpdrive into my laptop and have the installs sync certain data. I don't want docs and such to sync of course, but I would like some software to sync with installs and updates, mostly security and recovery stuff. Here's an example of what I would like to happen: I already have TestDisk installed on my jumpdrive but I haven't booted the drive in a while. I plug it in to my laptop where TestDisk has been updated and Wireshark has been installed. I would like the jumpdrive to check to see what has changed on the laptop install (in this case TestDisk has updated and Wireshark has been installed) and make those changes to the jumpdrive. Is there any kind of software to do that?

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• bootscreen downscaled

  - by blackmist

  my specs intel mb dh67cl corsair 4gb ram nvidia 560ti gtx i5 processor dell 22" monitor 1920x1080 firstly, i began using ubuntu last year. now im in love with it. just one minor detail i dont like is that the bootscreen changed just after the first boot. now im using 12.04.1. i will explain how it happened. first i installed ubuntu via windows. so it booted for the first time and life was beautiful. the resolution was 1920x1080. then i installed the nvidia drivers, all the updates and codecs for the medias. now the ubuntu bootscreen downscaled to a lower resolution. i tried searching for answers, but nothing was for ubuntu 12.04.1. since im a newbie, i didnt want to take any chances. i need help. i like the bootscreen.

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• Splice gives blank screen on startup

  - by dpb

  I just installed splice from the humble bundle, and I get a blank screen on startup. I can hear the audio, and if I move my mouse around, I can hear the menu items or something changing. I have an amd radeon HD5800 series. I'm using the fglrx-updates driver on 12.10, fully updated. Any ideas of things to try? Full screen or windowed, I get a blank window. Also, other GL games are running just fine.

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• 12.04 - sound is laggy when running games through Wine

  - by orzechowskid

  Lenovo U400 Wine 1.5.5 Ubuntu 12.04 with all updates applied I'm experiencing severe (~500ms) audio lag in all games run in Wine. Portal 2, Half-Life, World of Goo, and Fallout are all exhibiting this problem. When I run winecfg though and click the "Test Sound" button at the bottom of the Audio tab, the sound effect appears to play immediately. So I'm not sure what's going on. I don't think it's a problem with PulseAudio by itself since totem videos and Youtube clips both play in perfect sync. Anyone have any ideas on where to start fixing this? thanks! (edit: I thought this was limited to Steam games but I installed a non-Steam game and I now see that's not the case. I get audio lag in other apps too.)

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• List all versions of a package

  - by askb

  Is there a equivalent of this command; yum list kernel-headers --showduplicates on Ubuntu with apt-get, apt-cache etc. The above command lists various versions of the kernel-headers rpm available on F20/RHEL or installations. Closet I can get using apt-cache showpkg, not sure if there is a better way ? $ apt-cache showpkg linux-image Package: linux-image Versions: Reverse Depends: firmware-crystalhd,linux-image systemtap,linux-image fiaif,linux-image Dependencies: Provides: Reverse Provides: linux-image-3.13.0-27-lowlatency 3.13.0-27.50 linux-image-3.13.0-27-generic 3.13.0-27.50 linux-image-3.13.0-24-lowlatency 3.13.0-24.47 linux-image-3.13.0-24-generic 3.13.0-24.47 linux-image-3.13.0-24-lowlatency 3.13.0-24.46 linux-image-3.13.0-24-generic 3.13.0-24.46 Expecting similar output: $ yum list kernel-headers --showduplicates Loaded plugins: langpacks, refresh-packagekit Installed Packages kernel-headers.x86_64 3.11.10-301.fc20 @fedora Available Packages kernel-headers.x86_64 3.11.10-301.fc20 fedora kernel-headers.x86_64 3.14.4-200.fc20 updates This would help me simply do a downgrade or upgrade to a specific version.

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• Computer restarts when I choose my Lucid install from GRUB

  - by Alexx Hardt

  Hey, I have 4 OS's on my netbook, it's really more a toy. However, in my main OS (Ubuntu Lucid) is some data I don't like to lose. Today, whenever I choose this install from GRUB, the netbook (Asus eeePC 1001P if it's of help) waits 5 seconds (no kernel messages) and then reboots. The other entries (backtrack, Linux From Scratch, Windows XP) work fine. Can anyone hint me to where the error could be? It's not GRUB, right? So a reinstall wouldn't help? Is it the kernel? I'm afraid I didn't remember when and what the most recent automatic updates were.

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• Help me to find a good name for my website

  - by framomo86

  Hi guys, I have a web marketing question for you. I'm looking for a good domain name for my web app. This site is about writing. Any kind of user generated writings including poetry, aphorisms, short stories, song lyrics etc. I have some candidates, but I think it can be better. . I want the name to promote very good quality words, not just random facebook-like status updates. This is my list, but I think you can do better, any help would be very very appreciated. I promise to add your name in my credit if i pick your answer. Thanks Yourwritings Youwrite Beautifulwords thewriter writingshare

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• Ubuntu user expectations from 12.04 and future releases

  - by Rick Green - Turbo

  How much further ahead is 12.10 vs 12.04 in respect to kernel updates and applications? Example: Gimp's newest release is 2.8 which runs equally as well in both 12.04 and 12.10 and probably will in 13.04. What restricts 12.04 from having "the same" look, feel, applications and kernel as 12.10 or the upcoming 13.04? I know that it's more than a name change.....it's whats under the hood that counts. Incrementally upgrading, I feel is safer than radical changes from release to release. Trying to keep a stable desktop and current user experience, how far can I take updating applications before I absolutely have to make a distro upgrade from 12.04LTS

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• A known issue with security update 979906 in which the Microsoft .NET Framework 1.1 Service Pack 1 p

  219714 ... A known issue with security update 979906 in which the Microsoft .NET Framework 1.1 Service Pack 1 package is displayed as "1.0 security update"This RSS feed provided by kbAlerz.com.Visit kbAlertz.com to subscribe. It's 100% free and you'll be able to recieve e-mail or RSS updates for the technologies you pick from the Microsoft Knowledge Base....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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• O'Reilly Deal of the day - 5/JSep/2012 - Programming Windows 8 Applications with C#

  - by TATWORTH

  Today's deal of the day from O'Reilly at http://shop.oreilly.com/product/0636920024200.do?code=DEAL is Programming Windows 8 Applications with C# ."With Early Release e-books, you get books in their earliest form — the author's raw and unedited content as he or she writes — so you can take advantage of these technologies long before the official release of these titles. You'll also receive updates when significant changes are made, new chapters as they're written, and the final e-book bundle. If you want to build Windows 8 applications for desktops and the forthcoming Microsoft Surface tablet PC, this book will show you how to work with the Metro design language and the Windows RT operating system. You’ll learn this new landscape step-by-step, including the minute system details and design specifications necessary to innovate and build a variety of Windows 8 apps. It’s ideal for .NET developers who use C#."

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• how to serialize function depending on what instance of object calls it, if same instance call in a thread then do serialize else not

  - by LondonDreams

  I have a function which fetches and updates some record from db and I am trying to make sure each if the function is called by same instance of object(same Or different thread) then function should behave synchronized else its a call from different object instance function need not to be synchronized. I have tried it use a lock per client. That is, instead of synchronizing the method directly using explicit locking through lock objects using Map. function is like :- getAndUpdateMyHitCount(myObjId){ //go to db and get unique record by myObjId //fetch value , increment , save update } And this function may get call is same thread by different Or same object instance But as fetching and matching from Map is slow , Is there other optimized way to do this ? Found similar at this Question but dont feel that is optimized

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• Screen Resolution Problem with Ubuntu 14.04 and VirtualBox

  - by user3341257

  Environment: Lenovo T530 running Windows 7. Have installed Ubuntu 14.04 on a virtual machine using VM Virtual Box. Have installed all the updates from both Virtual Box and Ubuntu. Problem: While in Ubuntu's desktop and other Ubuntu initiated programs, the window is reduced to about 3x4 inches showing in the middle of the rest of my regular Virtual Box window. I am seeing only the upper right hand of the screen output of what I would normally see. Please help. I've seen How do I install Guest Additions in a VirtualBox VM? But, none of these answers works in 14.04.

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• Do I need the ATI driver or open source for dual monitor setup (ATI HD 4350 - 1GB PCI-e) in Pear Linux 12.04?

  - by Geeve

  I think I covered my question in the title. Right now both monitors are mirrored (both 19" at 1440x900). I guess what I need to know is do I need the ATI proprietary driver or will the open source driver from Ubuntu (additional drivers) work? I want to expand the desktop between the two monitors. Still finishing install and running updates now, I just wanted to gather all documentation and downloads prior to doing what is necessary. Any help will be greatly appreciated.

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• Upgrade to 13.04 was not successful. Gstreamer not working. What do?

  - by user172214

  I finally decided to upgrade to 13.04. In the middle of the installation my computer froze completely, and so I decided to force quit. I log back on, and notice that the login says 13.04, but not everything was updated. So I run the software updater. Some of the stuff gets updated, but not everything, I suppose. I try to run Rhythmbox, but it says that it's not able to form playback, and that the Gstreamer was messed up, and to please check installation. I don't know what other bugs maybe running. That's just the first I've encountered. The software updater won't let me update anymore because it says the updates need authentication.

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• Only can move the pointer after upgrading

  - by Mystogan

  I made a partition on my desktop pc, 100 GB and installed Ubuntu 12.10 on it. It was pretty slow first thought it had to install updates or something, so I rebooted it. Now after the login it looks like everything freezes, I can move my mouse only, but that's it! I can see my desktop and launcher, but the task bar doesn't display time and misc system info, only a black bar, I downloaded the Android SDK pack and installed vlc media player before I rebooted. My computer info: 1 TB HDD 8 GB ddr3 RAM ATI Radeon 4890 videocard (1 GB) AMD Phenom 2 x4 black 3, 2ghz CPU (64 bits)

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