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• Switching to an external display, when primary is broken

  - by Shazzner

  I've successfully install Ubuntu 11.10 Desktop (x86) on an old(er) laptop that unfortunately has a broken screen, so there is an external monitor plugged in. On the livecd it come up on the secondary display just fine and I was able to install ubuntu and everything. Unfortunately when I reboot into Ubuntu proper now, the secondary display is off and I'm literally driving blind here trying to switch it to the secondary display. Using Nvidia open source drivers. Things I've tried: Rebooting back into livecd, mounting the partition and trying in vain to find a config file (it uses the open source drivers so no Xorg.conf I could edit manually) Trying to blind-type xrandr settings into what I hope is terminal: xrandr --output VGA1 --auto (nothing happened) Trying to blind install openssh-server so I could ssh into it and maybe configure it from my working computer. For some reason though, no luck. Ubuntu really should default to expanding to all screens for this use case.

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• Compiz ( or even compositing in general) is not starting up when I login. Solution?

  - by ender.cc

  Whenever I log into a desktop environment, it doesn't seem that compositing is starting. Unity 2D works fine, but when I go to Unity 3D Compiz doesn't start up. I have to type compiz --replace & in terminal every time I login. Another example is when I log into a Cinnamon session, theming support is suddenly gone (although this may be a separate issue). If it helps im using the latest (295.40) NVIDIA drivers. EDIT: I am having exactly the same issue in both cases, upgrading from 11.10 and with a clean installation, in 32 and 64 bits. Related post.

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• Blank Screen ... No Bios Loading Screen Either

  - by SwissStar

  I don't even know how long it's been but I had given up. until now. My screen does not come on AT ALL, not even and the Bios loading screen. I have to connect it to my TV in order to see. But there's one thing that has always started it back up, and that is by running a hard ware Diagnostics * Provided by DELL* . It is definitely has something to do with Ubuntu. I know that for sure, because I remember running an update and BAM . That was it for the screen. How could I restore my screen back to Life ? I have a Nvidia Graphics Card.

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• What sort of things can cause a whole system to appear to hang for 100s-1000s of milliseconds?

  - by Ogapo

  I am working on a Windows game and while rendering, some computers will experience intermittent pauses ("hitches" for lack of a better term). When profiled they appear in seemingly random places in the code. Eventually I noticed that it wasn't just my process that was affected, but (seemingly) every process on the system. All of the threads in my application hitch at once. The CPU utilization drops during these hitches and it appears as if most processes make no progress. This leads me to believe this may be an Operating System or Driver issue, but it only occurs while playing the game (and only on some systems). What sort of operations might the operating system be doing that would require the kernel to pause all user threads and block. Some kind of I/O? At first I thought of paging but my impression is that would only affect a single process, no? Some systems in use: Windows, DirectX (3d), nVidia cards (unknown if replicates on ATI), using overlapped io for streaming

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• Compiz cube issues since upgrading to 12.10. The caps and 3d windows are all over the place.

  - by Slarty

  I think it's due to residual settings from the old reflection and deformation plug in. I've attempted a complete reset of the settings and still no go though. The cube caps stay black and glitch out when I spin it etc and I see multiple copies of each window. It's like it's trying to display the "inside the cube" setting and the regular just floating 3d window at the same time. Here's one example (rep isn't high enough yet for fancy img imbed, sorry) http://i.stack.imgur.com/rrbBd.jpg Any ideas? I'm trying this on my desktop which is using an NVIDIA 8800 GTS card. I also tried it on an older laptop that uses an intel card and same deal. I think maybe I can use the dconftool and try to see if there are still settings from the deformation and reflection plug in causing this. Unless someone knows how to get that back (either a beta or an old version) somehow?

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• Full brightness and keyboard backligh at boot

  - by joelalmeidaptg

  I own an Asus N56VZ, and each time I start Ubuntu (13.10 and prior versions) my screen brightness and keyboard backlights reset their values to the max. Ubuntu doesn't save my settings on reboot. I was wondering if someone could help me with this? It is horrible when, at night, I turn on my computer - it is like looking directly to the sun, and it hurts my eyes. I tried googling and none of the pages I found actually helped. I think my issue might be grub-related. I have a dual-boot with Windows 8.1, so before I start my computer I see grub to choose my operating system. My screen starts at full brightness as soon as I reach grub. Maybe he is making the OS forget about my last values, overriding it with its? Does someone knows how to solve this? Thanks in advance :) PS: I'm using bumblebee with Nvidia driver 304, but this issue existed before I installed it.

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• Some problem about Compiz and GTK on Ubuntu 14.04

  - by LVHoanh

  I installed Ubuntu 14.04 on my computer : i3/4G/750G/VGA Intel HD3000 & 1GB NVidia with CUDA GT540M. I've some problems with Ubuntu 14.04 : Does Ubuntu 14.04 support Emerald Theme Manager? Emerald Theme Manager is not available in Ubuntu Software Center? I installed Compiz and Compiz Setting Manager, it works ok, but the Windows 3D plugin is not work? The Shutdown/Restart function on Right-Top Panel is not work, is there any solution for this problem? The mouse theme I installed only work in current session, next time i restart computer it change back to default mouse theme? How can i resize the spacing between Desktop Icon? Waiting for everyone respond. Thankyou so much. P/s : My English is not good, expect you understand. :)

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• Why does my screen blank out for the duration of the Grub boot menu?

  - by hushs

  Upon booting, when I should see the GRUB menu, my monitor simply says: "No optimum mode. Recommended mode: 1600*1200". If I wait for a short while, Ubuntu starts to boot and it reaches the desktop. So I guess there is no video signal during that time, there's the grub menu but I cant see it and after the wait time everything is fine. I have the same problem when I log out for a short moment, before the log in screen is reached. and this also happens when i shut down ubuntu. The VGA is an onboard NVIDIA GeForce 7025.

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• Unable to make Window transparent in Ubuntu 12.10

  - by Falguni Roy

  I have recently upgraded from ubuntu 12.04 LTS to 12.10 (x64). I used to have transparent window tittle bar using gconf-editor -> apps -> gwd. But in 12.10 editing the value isn't doing nothing. Also in ccsm many plugins such as: opacity, brightness, saturation, desktop cube and rotate cube are all gone. I love that transparent look very much and I want to get it back in 12.10. I'm using Nvidia 7200GS ; AMD Athlon 7750 ; 3GB Ram. Is there any way to get it working?

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• WebGL 1.0, spécification finalisée pour la bibliothèques d'accélération 3D libre soutenue par Chrome, Firefox, Opera et Safari

  La spécification de WebGL 1.0 est finalisée Pour la bibliothèques d'accélération 3D libre soutenue par Chrome, Firefox, Opera et Safari Ces dernier temps, vous avez entendu parler de la mise en place de WebGL dans les nouvelles versions des différents navigateurs web. Comme vous devez déjà le savoir, Firefox 4, Google Chrome 9 (rendez-vous à l'adresse "about:flags" pour activer WebGL supportent la nouvelle technologie (également soutenue par Apple pour Safari et par Opera). Khronos, un consortium de constructeurs de cartes graphiques (NVidia, AMD, Imagination Technologies, ...) et de différents grand acteurs dans le monde de la 3D (Activision, Epic Games, ...) annonce dur...

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• [solved]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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• No video signal during: grub, for a moment when I log out and during shut down

  - by hushs

  When I should see the GRUB menu I only see my monitor writes out this: "No optimum mode. Recommended mode: 1600*1200". If i wait for a short while, ubuntu starts to boot and it reaches the desktop. So I guess there is no video signal during that time, there's the grub menu but i cant see it and after the wait time everything is fine. I have the same problem when I log out for a short moment, before the log in screen is reached. and this also happens when i shut down ubuntu. The VGA is an onboard NVIDIA GeForce 7025. Kinda strange problem, I have no idea how to solve this. Please help :)

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• Dual monitor with different resolutions problem

  - by Mackemint

  I'm on an LG R405 with a PM965 chipset and a NVIDIA GeForce Go 8400M GS gaphics card. I'm trying to use an external monitor (Benq senseye3 G2222HDL) through a VGA out port. All was fine when installing except for the screen layouts were flip-flopped (computer defalut setup so external monitor was to the right instead of left). When I moved the secondary monitor to its real position in the setup, I started getting strange problems. I loose representation of large portions of the screen, on both screens, and have to reboot. If I plug the monitor in after rebooting I get more problems than when booting up with the monitor already plugged in, but in both cases I can barely see what I'm doing. Please advice! Regards /M

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• Momentary freezes about every 60 seconds

  - by Barafu Albino

  I have just switched from OpenSuse to Ubuntu (the only reason is poor repositories - I got tired of installing everything from tar-balls). OpenSuse KDE worked flawlessly. Off-topic OS 7 does too. However, Ubuntu 13.04 after all updates keeps freezing about every minute. The time differs between occasions. It halts just for a fraction of a second, too quick to notice, but music crackles, and compressed video looses its tracks and covers with errors until a scenecut. I don't know what is responsible, the logs are clear. Tried to: change audio card, switched to Nvidia drivers and back, paused all unneeded daemons. Didn't help much. Any ideas where to look? I am experienced in Linux, just new in Ubuntu.

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• Windows 8 sera adapté aux puces ARM, Microsoft fait la première démonstration officielle de l'OS au CES de Las Vegas

  Windows 8 sera adapté aux puces ARM Microsoft fait la première démonstration officielle de l'OS au CES de Las Vegas Mise à jour du 06/01/2011 par Idelways Après plus d'un an de spéculations et de fuites involontaires (ou pas), Steve Ballmer vient de faire la première démonstration du successeur de Windows 7, et a annoncé que l'OS supportera en natif les puces ARM. On sait donc désormais que Windows 8 (bien que Ballmer ait fait très attention d'éviter de lui donner le moindre nom) fonctionnera sur une architecture System-on-a-chip (SoC), fournie dans un premier temps par NVIDIA et Texas Instruments. Le PDG ...

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• USB mouse freezes

  - by Zabba

  A simple Microsoft Optical mouse 1000 (USB) that runs perfectly on Windows, freezes up under Ubuntu 10.x and Fedora 1x after about 10 minutes of using the OS.Rebooting, the same problem comes up again in a few minutes. Interestingly, the problem does not occur when Ubuntu is installed in Oracle VirtualBox VM. Installing Ubuntu "as usual" (i.e. not in a VM), causes the problem to occur. Has any one here faced the same problem or have a solution for it? Maybe using a different mouse that is known to work with Ubuntu 10.x? If it helps my system is: Asus P5NSLI motherboard (nVidia nForce 570 chipset), 4 GB RAM Ubuntu 10.10 refers to "32 bit" version of Ubuntu It seems that Ubuntu has a lot of all types of freeze issues. Can someone recommend a version of Ubuntu that is fairly recent and stable ? I intend to use Ubuntu for Ruby on Rails development.

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• Les premiers smartphones dual-core présentés au CES hier, à quoi servira une telle puissance ?

  Les premiers smartphones dual-core présentés au CES hier, à quoi servira une telle puissance ? Mise à jour du 06.01.2011 par Katleen Début décembre 2010, Nvidia affirmait que "les processeurs dual-core seront le standard en 2011" pour les smartphones et pour les tablettes. Cette prédiction semble être sur le chemin de la réalisation, comme l'ont démontré certains acteurs du secteur hier au CES. En effet, les premiers modèles de téléphones mobiles multi-coeurs y ont été présentés. Motorola a dévoilé son Atrix 4G qu'il vante comme «le smartphone le plus puissant du monde». Dans ses entrailles, on trouve un processeur dual-core Tegra 2 cadencé à 2 Ghz et 1 Go de RAM. De quoi réaliser de ...

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• Problem installing Lubuntu 11.04

  - by anyhelpisapreciated

  After I boot the Live-CD I can't select try Lubuntu or Install Lubuntu and I end up hanging on that screen. My PC specs are: Compaq Presario s4214bd 2.4ghz Intel Celeron. Windows XP/Ubuntu 10.04 dual boot. 768mb Ram. Nvidia 6200 Graphics card (I've switched between the onboard and PCI(this one) still no luck). I really want to use Lubuntu and I've been trying everything for the past 2-3 hours. Anything will help.

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• How can I change the percent of screen brightness that changes every time I press the shortcut?

  - by Chriskin

  When I press Fn+F6 the change in brightness is too big. How can I make it move less than it does now? (Let's say, half that, for example.) (11.04/Gnome. I'm on proprietary nvidia drivers.) EDIT: I haven't tried what Rinzwind has written below because , after throwing a cup of coffee on my laptop, my keyboard was destroyed (so i no longer have the FN button that is needed - i'm currently writing from an external one). I have already ordered a new one and i will collect it from the service center tomorrow at noon

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• Is git / tortoisegit ready to replace snv / tortoisesvn on windows?

  - by opensas

  I've been using svn thru tortoise and svn:// protocol on windows for a couple of years and I'm pretty comfortable with it. Nevertheless tThere are a couple of features I'd like to hove, mainly shelves (something like local commits) and easier branch / merge support. From my experience, svn / tortoise on windows is rock solid stuff. I was wondering if git / tortoisegit has achieved the level of maturity and stability so as to be a replacement for svn on windows. Any experience about it? saludos sas some links: a similar question, only a bit outdated http://stackoverflow.com/questions/1500400/is-tortoisegit-ready-for-prime-time-yet http://stackoverflow.com/questions/931105/tortoisegit-tortoisebzr-tortoisehg-are-any-solid-enough-to-switch-from-tortois (well, it seems like mercurial could be an option) http://code.google.com/p/tortoisegit/ http://www.syntevo.com/smartgit/index.html (free of charge for non-commercial use or to active members of the Open Source community)

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• log4j floods my console

  - by srikanth VM

  This is the log4j.properties that i have in my app log4j.rootLogger=B C log4j.logger.A=INFO, A1 log4j.debug=false log4j.appender.A1=org.apache.log4j.ConsoleAppender log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %C - %m%n log4j.logger.B=INFO, A2 log4j.debug=false log4j.appender.A2=org.apache.log4j.FileAppender log4j.appender.A2.file=PRIME-log.txt log4j.appender.A2.layout=org.apache.log4j.PatternLayout log4j.appender.A2.layout.ConversionPattern=%d [%t] %-5p %C - %m%n log4j.logger.C=INFO, A3 log4j.appender.A3=org.apache.log4j.FileAppender log4j.appender.A3.file=employee_pass_regeneration-log.txt log4j.appender.A3.layout=org.apache.log4j.PatternLayout log4j.appender.A3.layout.ConversionPattern=%d [%t] %-5p %C - %m%n I only want File appender so i only use that , but some how my console is always flooded with DEBUG messages which i have never used 8704 [http-8080-2] DEBUG org.springframework.web.servlet.view.JstlView - Rendering view with name 'passIndex' with model null and static attributes {} I guess these are all system messages , but with these debug messages its really hard to debug actually i mean i cannot find my own sysouts i tried log4j.debug=false but still i get these messages

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• Time complexity of Sieve of Eratosthenes algorithm

  - by eSKay

  From Wikipedia: The complexity of the algorithm is O(n(logn)(loglogn)) bit operations. How do you arrive at that? That the complexity includes the loglogn term tells me that there is a sqrt(n) somewhere. Suppose I am running the sieve on the first 100 numbers (n = 100), assuming that marking the numbers as composite takes constant time (array implementation), the number of times we use mark_composite() would be something like n/2 + n/3 + n/5 + n/7 + ... + n/97 = O(n) And to find the next prime number (for example to jump to 7 after crossing out all the numbers that are multiples of 5), the number of operations would be O(n). So, the complexity would be O(n^2). Do you agree?

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• Getting into a technology which requires experience when you have no experience

  - by dotnetdev

  It seems that Sharepoint is a technology which is very hard to get into. All the jobs in this tech require experience in working with it (Eg 2 years development experience in MOSS). If I wanted to get into this - but had no job that used the tech, how can I get experience in it to get an experienced job? Jobs state you need "2 years professional experience in MOSS 2007" but then if you have never done it, you won't get the job. The only possible way is you will be doing this at home and not in a team, but if you work in the mean time, that will negate this (it's not like teamworking is tech specific). Many people think if you decide to make a project at home you're just going to play about aimlessly rather than work to specs (where as in my current situation it's vice versa) but if you're dedicated, like me, you would write them - just not with the same presentation. Would employers treat experience at home as professional experience? Biztalk is another prime example of this. Thanks

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• Uninstall Mono from Mac OS X v10.5 Leopard

  - by Mac

  I installed Mono on my iMac last night and I immidiately had a change of heart! I don't think Mono is ready for prime time. The Mono website says to run the following script to uninstall: #!/bin/sh -x #This script removes Mono from an OS X System. It must be run as root rm -r /Library/Frameworks/Mono.framework rm -r /Library/Receipts/MonoFramework-SVN.pkg cd /usr/bin for i in `ls -al | grep Mono | awk '{print $9}'`; do rm ${i} done Has anyone had to uninstall Mono? Was it as straight forward as running the above script or do I have to do more? How messy was it? Any pointers are appreciated. Thanks

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• using AudioQueues with AudioFileReadBytes

  - by Santosh

  Hey Im trying to work with Audio queues to play a very big mp3 file (arround 23 hours long). when audio queue asks for buffers though callback, im using AudioFileReadBytes() API to read the bytes from audio file and feed the queue. startQueue fails with the error : prime failed any inputs????? Also I succeeded playing file using AudioFileReadPackets API instead of AudioFileReadBytes(). But the problem with API is that when I seek (fast forward) by a long interval, say 9 hours (for example fast forward from 32 mins playtime to 9:32 mins) then AudioFileReadPackets() takes a long time (almost 2 mins) to read from new location. any comments would be greatly appreciated.

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