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• Log in sound is playing, but no sound during gnome desktop session.What's the problem?

  - by user14376

  When i installed ubuntu, everything was great. But one day, i heard the login sound but no sound on the desktop session. This happens every time. I have reinstalled sound drivers several times, checked speakers are not mute, checked alsamixer, saw all the troubleshooting tips on the net, checked user privileges too but of no help. anyone knows the answer? Please help!!!!! I have ubuntu 10.4LTS and alc662 sound chip. My computer is detecting the sound card and no problems with my speakers.This maybe a bug but i cannot report as i don't know if this will repeat(I atleast have to solve the problem first).

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• Advice on triple/quadruple-booting?

  - by professorfish

  I am currently running Windows 7 Home Premium x64 on my laptop. I would like to install more than one Linux distro, IN ADDITION TO Windows 7. How do I go about this, what do I need to be careful and aware of, is it possible? The specific distros I might eventually install: Definitely: Ubuntu (is it a good idea to install the Linux-Secure-Remix version?) Almost definitely: OpenSUSE Probably: Zorin Possibly: Arch Possibly: Fedora Possibly: FreeBSD Computer details: Successfully used WUBI for Ubuntu in the past Recently reinstalled Windows using the RECOVERY partition Windows 7 Home Premium x64 model: ASUS K53U series AMD Brazos Dual Core E450 1.65 GHz 750GB hard drive, currently partitioned into C: (300GB total, 246 GB free), D: (373GB - total, 167 GB free), and RECOVERY (the rest of the space, I think) 4GB RAM Can I be sure that GRUB will work, if WUBI has worked? In short, how do I go about triple- or quadruple-booting Windows 7, Ubuntu and other distros? What do I need to be aware of? How do I set up the partition structure? Thank you in advance

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• Ubuntu installation always restarts

  - by user1880405

  I downloaded ubuntu-12.04.3-desktop-amd64.iso and mounted it to USB. I restart my laptop, select Install Linux and select language, then it says I have no internet, I press "Continue", and then I click "Install Ubuntu alongside Windows 8" and click "Continue", the computer just restarts and I see the again the same Try-Ubuntu-or-install-it menu. And hence I cannot install Ubuntu. I check md5 hash for iso and it's correct. Thanks for any help. P.S. I couldn't find answer anywhere else.

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• External monitor with NO mouse cursor

  - by Csaba Nyerges

  I am using a Fujitsu Siemens Amilo L7310 laptop computer with an external monitor. I'm wishihg to use version 10.04. The problem is, when I plug my laptop into the external monitor with my laptop screen turned either on or off, I do not see the mouse cursor on the external monitor! The mouse cursor is still there, although invisible. If I connect the external monitor to my laptop before swithing both on, the same happens. Is there any solution to make the cursor appear on the monitor?

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• How Can I Disable Windows 7's Aero Performance Warnings?

  - by Jason Fitzpatrick

  You know your computer isn’t cutting edge, but there’s no need for Windows 7 to constantly remind you. Read on to see how you can disable its constant nagging to adjust your color scheme to improve performance. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• How can I learn to write idiomatic C++?

  - by yati sagade

  I am a computer science student, and as a result, I was taught C++ as a better version of C with classes. I end up trying to reinvent the wheel whenever a solution to a complex problem is needed, only to find sometime after that, some language feature or some standard library routine could potentially have done that for me. I'm all comfortable with my char* and *(int*)(someVoidPointer) idioms, but recently, after making a (minor) contribution to an open-source project, I feel that is not how one's supposed to think when writing C++ code. It's much different than C is. Considering that I know objected-oriented programming fairly well, and I am okay with a steep learning curve, what would you suggest for me to get my mind on the C++ track when I'm coding C++?

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• SPARC T5-4 Engineering Simulation Solution

  - by Mike Mulkey-Oracle

  A recent Oracle internal performance evaluation for computer-based product design demonstrated that Oracle's SPARC T5-4 server running MSC's SimManager simulation software with Oracle Database 12c consolidates the work of multiple x86 servers while delivering better overall performance.   Engineering simulation solutions have taken the center stage in helping companies design and develop innovative products while reducing physical prototyping costs, and exploring a larger design space, resulting in more design possibilities. For this solution, a single SPARC T5-4 server running Oracle Solaris 11 was deployed to consolidate the MSC SimManager server, the Oracle Database 12c server, and the web application server onto a single platform. An automotive design workload was deployed to demonstrate how the SPARC T5-4 server can be used to consolidate the work of multiple x86 servers and deliver better overall performance while reducing complexity and achieving optimal product designs.  A joint Oracle/MSC Software solution brief describes this in more detail:  A Simplified Solution for Product Lifecycle Management —MSC SimManager on a SPARC T5-4 Server

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• How do you hibernate/suspend Ubuntu like Windows or both at the same time?

  - by All Star Geek

  I'm using an ASUS laptop with Windows 7, and I just installed Ubuntu alongside Windows yesterday, using the no-risk option. I noticed, though, that I can't hibernate Ubuntu the way I did with Windows to save time, and, every time I use Ubuntu, I have to shut down to go into Windows, which has a slow boot. Is there any way that I could have Windows and Ubuntu hibernated at the same time so I can access both easily (preferably without having to hit a function key within seconds). When I try to hibernate or suspend Ubuntu with Windows shut down, the screen just turns blue and doesn't shut the computer off like a Windows hibernate or sleep.

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• Is there a repository of game logic algorithms?

  - by New2This

  I'm writing my first 2D game, and I'm writing some tracking logic for the computer enemies. Basic follow-the-player tracking was easy, but ineffectual. Too easy to escape. So I'm trying to implement some more sophisticated flanking and other tactics, and (as expected) it's pretty tricky. This is a topic I know nothing about. I'm going to keep trying, but it'd be awesome to have some examples or tips to work off of. Is there any place that has a decent set of pseudocode AI algorithms, or tips or advice on the subject, e.g. for 2D tracking?

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• desktop problems in 12.04

  - by joe

  I recently upgraded from 11.10 (i think that was the last version that was out) to 12.04 and ever since i have been unable to start my computer (hp pavillion dv2815nr) in the "normal" mode, but have had to start it using previous versions. Every time I go to start it, it has a plain red screen (which it does in the previous versions as well) and the desktop icons will not respond. Also, the task bar at top is essentially missing, only having a thin black line there, and also missing the icon bar that "pops out" when you scroll along the left side of the screen. Essentially, I'm locked out in normal mode. Nothing will respond.

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• Looking for parallel programming problem

  - by Chris Lieb

  I am trying to come up with a problem that is easily solvable in a parallel manner and that requires communication between threads for a test. I also am trying to avoid problems that require require random waits, which rules out dining philosophers and producer-consumer (bounded buffer), two of the classics. My goal is for the student to be able to write the program in less than 20-30 minutes in front of a computer not knowing of the problem beforehand. (This is to prevent preparation more than to come up with something novel.) I am trying to stress the communication aspect of the program, though the multi-threaded nature is also important. Does anyone have some ideas? Edit: I'm using Google Go for the language and testing comprehension of the goroutines/channels combo vs an actors library that I authored.

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• SkyDrive Pro Limits

  - by Sahil Malik

  SharePoint 2010 Training: more information I’m putting this here, because I know I’m gonna forget it :) Overall size limits - On an on premises installation, there are no fixed limits on storage. You can configure it as you wish. For Office 365 (SharePoint Online), the limit is 7GB per user. Number of items (documents and folders): You can sync up to 20,000 items in your SkyDrive (personal library). You can sync up to 5,000 items from other libraries, per library. In other words, you could sync 10 libraries (for example), with each library having up to 5000 items. Third, site limits: No fixed limits. It depends on your computer's resources. Hooray! and Happy SharePointing! Read full article ....

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• No sound card detected [elementary os]

  - by Silouane Gerin

  h61 I set up a computer for my parents with elementary os. I installed an Asus P8H61-I motherboard which contains an integrated Realtek ALC887 sound card. The system doesn't recognize the sound card. Here are the results of some commands: lspci | grep audio doesn't return anything, alsa force-reload return Unloading ALSA sound driver modules: (none loaded). Loading ALSA sound driver modules: (none to reload). aplay -l no soundcard detected and cat /proc/asound/cards let me know that asound doesn't exist. I tried installing Realtek drivers but nothing happened. Here is a log from alsa : Log Can someone help me? Thanks.

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• Ubuntu for Internet radio

  - by user93100

  I am planning to set up a streaming server purely for internet radio using Icecast2. what software packages do i require during Ubuntu installation and any third party apps i may require. I am going to use BUTT(Broadcast using this tool) Encoder and would like to be able to run BUTT on any computer so that other people can broadcast to my server from anywhere. I am looking for tips or tutorials on how to achieve the above. I mainly need info on cofiguring Ubuntu Server and icecast2. Also GUI? if so what one. Preferablly lightweight. I am choosing Ubuntu for its level of security and reliability. I hope someone can help me as i plan to make this a community Radio station. Many Thanks Khz

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• Dash doesn't launch Gedit at the first try

  - by GUI Junkie

  I'm curious to find out what's going on here. Push the [windows] key -- Dash pops up. Type 'ge' -- 'Text editor' appears. [Enter] -- Nothing happens. With any other program, it launches the program. Repeat the steps and gedit launches. From terminal, gedit doesn't start. In the system monitor, it's 'sleeping'. This happens in my session, in my wife's session on the same computer, gedit runs. Any idea why gedit sleeps at the first launch?

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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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• Does Ubuntu 12.04 supports for B75 boards?

  - by rail02000

  I want to build a new computer with Intel G840 CPU and Gigabyte B75M-D3H motherboard and install Ubuntu (or Kubuntu) 12.04 64bit on it. However, I'm worried about whether the chip is too new and whether that Linux Kernel now has support for it. According to the article [Phoronix] Intel Core i7 3770K Ivy Bridge Linux Performance Review ,the Linux kernel is ready to work on the chip. Existing Intel Sandy Bridge motherboards/chipsets are compatible with Ivy Bridge processors, but earlier this month Intel launched the new Panther Point chipsets that are already compatible with Linux too: the B75, H77, Z75, Z77, HM75, HM76, UM77, and HM77. But I didn't find further information or cases about running Ubuntu on the chip. So,is it OK to run Ubuntu on the board? Do I need to upgrade the kernel to a newer version (3.4 or 3.5 etc.) to get the system more smoothly? Or should I choose boards with H61 chip? Thank for your response!

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• How to install correctly another Linux flavour (in my case PCLinuxOS) together with installed Ubuntu 10.10 ?

  - by Vincenzo

  Hello everybody and Prosperous and Productive Year 2011 !!! I have Ubuntu 10.10 (32bit) installed on my laptop. I would like to install PCLinuxOS (KDE or LXDE version, I don't know yet) on the same computer across with Ubuntu 10.10. I would like to test 'in real conditions' a new PCLinuxOS as well as to resolve my question regarding Audio CD playback issue (mounting DBus timeout error). I would be grateful if somebody can advise me how to perform the installation of another Linux flavour without breakdown :) of existing Ubuntu system ? Thank you in advance for advices and recommendations. Here is my current partitioning:

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• AMD Catalyst Beta Open Source Drivers

  - by FourZer0

  I'm a gamer with a pretty low-end computer, so I always update to the beta drivers to squeeze out every bit of performance I can get. I currently have 13.3 installed, but I want to install the 14.6 beta. I want to use the open source version, instead of downloading from AMD's website. How can I do that in the terminal? And please explain what the commands mean so I can do it on my own in the future. Thanks in advance!

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• reading parameters and files on browser, looking how to execute on server

  - by jbcolmenares

  I have a site done in Rails, which uses javascript to load files and generate forms for the user to input certain information. Those files and parameters are then to be used in a fortran code on the server. When the UI was on the server (using Qt), I would create a parameters file and execute the fortran code using threads so I wouldn't block the computer. Now that is web-based, I need to make the server and browser talk. What's the procedure for that? where should I start looking? I'm already using rails + javascript. I need that extra tool to do the talking, and no idea where to start.

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• Windows Wireless Drivers - Install

  - by Justin Y.

  I have nearly ended my journey of making a dual-boot windows xp and ubuntu computer. Along with version 12.04, came the problem with my NetGear WNDA3100v2 wireless adapter. It wasn't compatible. My last step in my adventure is to install the software called Windows Wireless Drivers. I have internet access on my laptop and a flash drive. It would be preferable to receive a link to this program, because I see no link on the website, and I can't download it from the Ubuntu Software Center. Thanks.

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• Neverwinter Nights does not run in 12.10

  - by 0x0me

  I recently installed a fresh version of Ubuntu 12.10 on my notebook. Then I copied the backup copy of my nwn folder from my old 12.04 install on the same computer to the new installation and tried to start the game. The terminal prompt disappears and top shows some low activity on nwmain, but there is neither showing up the game graphics nor plays any music. Any suggestions how to fix it? The game runs fine using the same setup expect for running on 12.04. Kind regards and thanks in advance

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• How do operating systems… run… without having an OS to run in?

  - by Plazmotech Binary

  I'm really curious right now. I'm a Python programmer, and this question just boggled me: You write an OS. How do you run it? It has to be run somehow, and that way is within another OS? How can an application run without being in an OS? How do you tell the computer to run, say, C, and execute these commands to the screen, if it doesn't have an OS to run in? Does it have to do with a UNIX kernel? If so, what is a Unix kernel, or a kernel in general? I'm sure OSes are more complicated than that, but how does it work?

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• livecd won't boot 11.04

  - by user20006

  I bought a brand new computer yesterday (Toshiba Satellite Pro L770-10T : Intel Core i5 2410M, 2,3 GHz, 4096 Mo RAM, nVidia GeForce GT 525M) that simply won't boot any livecd I tried. I am using debian/ubuntu for a long time but this is the first time I can't boot a livecd Here is what I tried without success: Ubuntu 11.04 i386 and x64 both desktop and alternate Debian stable livecd old working ubuntu livecds including 8.x 9.x 10.x On ubuntu-10.04.2-desktop-i386.iso I had a kernel panic On 11.04 packages were corrupted although md5 and sha1 were correct I must add that those were burned on different cds CD-R or CD-RW. Any help would be greatly appreciated! Thanks in advance

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• Why does Evolution give me multiple reminders for the same event?

  - by Dylan McCall

  I have a bunch of calendars on my Google Calendar account (school & work, personal, etc.), so I have Evolution subscribed to each one of those calendars. When I get a notification for an upcoming (recurring) event, I actually get many notifications for the same event, all at the same time. For example, just now I got 21 notifications for one event. I am using Gnome Shell, where the message tray displays event notifications in its own way. I get the same behaviour on my other computer, also running Ubuntu 11.10 with Gnome Shell. (And it has happened running Unity where Evolution only shows its dialog window with event reminders, but I'm not sure if it has happened quite as intensely). Does someone know why this is happening, and maybe how to fix it? It would be cool to get slightly less panic-inducing event reminders :)

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