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• Screen brightness control not working on Lenovo T530

  - by Matt

  My brightness control doesn't work with a fresh install of 12.10 (brand new laptop). It is set to the brightest setting when I boot up and when I try to change it, I see the notification bar come up but the brightness doesn't actually change. I've tried all the solutions I could find around the Internet but none of them work. Things I have tried include: Editing /sys/class/backlight/acpi_video0/brightness In /usr/share/X11/xorg.conf.d/10-brightness-control.conf: Option "RegistryDwords" "EnableBrightnessControl=1" In /etc/default/grub: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor" There is no xorg.conf file in 12.10 that I have found, so the solutions that suggest editing that file don't do me a whole lot of good. I am currently using the Nouveau driver, but switching to the Nvidia proprietary drivers made no difference. Any other ideas? When is this bug going to be fixed? With all the reports I've come across I would think it would get a lot of attention. Thanks.

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• How to solve "GPU Lockup - switching to software fbcon" on new install of 12.10-desktop-amd64

  - by Curtis

  Error occurs during startup of Ubuntu Installation. Sometimes I'll get to the Welcome screen just like this, the screen will just glitch out, or will simply freeze during the loading icon. nvidia GTS 250 Intel Core i7 920 9 GB Memory I was able to install 12.04.1, but after performing upgrade to 12.10 it get the same problem on startup; glitches in graphics, missing content etc. Also noticed after the upgrade, I'm no longer able to connect to internet; neither ethernet or wifi.

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• Installing Ubuntu 14.04 on macbook pro EFI

  - by user279771

  Macbook pro: mavericks, 5.2, graphics: nvidia geforce 9600M I followed the guides from here: https://help.ubuntu.com/community/UEFIBooting#Detect_.28U.29EFI_firmware_processor_architecture and http://www.rodsbooks.com/ubuntu-efi/. What I have is the following: /dev/sda apple partitions /boot / (root) swap When installing ubuntu, I did not install the boot loader during installation but did so in a chroot environment after installing grub-efi. I installed grub to /dev/sda1 (efi) which created the grub64.efi file in efi/ubuntu. This allows the refined boot manager to bring up grub and select ubuntu however, the graphics does not work. Even after adding nomodeset and removing quiet/splash from the kernel parameters. Any ideas on what could be wrong? To be clear, if I remove quiet/splash, I can see all the text startup messages being printed out however, the display manager doesn't appear to start (the screen stays black). Oddly enough though, the ubuntu startup sound can be heard.

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• Enabling "AllowDualLinkModes" in xorg.conf

  - by Gausie

  I'm using a GeForce GT 620 (which is dual-link compatable) and a DVI-I dual-link splitter to try to have a desktop extended onto two monitors. At the moment when I plug in the monitors, only the monitor on the female VGA marked "1" gets a signal, and the other screen gets nothing and only one screen is detected by nvidia-settings. After reading around, I have realised that my graphics card probably comes with dual-link disabled by default, and I can enable it by adding an "AllowDualLinkModes" option to my xorg.conf. This is the current state of my xorg.conf Section "Device" Identifier "Default Device" Option "NoLogo" "True" EndSection Where do I put the line about AllowDualLinkModes? Do I create a new Section? Have I misunderstood? Cheers Gausie

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• Purple line on left side of screen when I use graphics card's hdmi port

  - by fab

  My graphics card is a nVidia GeForce GTX 660 2GB. When I plug HDMI into mobo it works fine. When I plug it into the graphics card (with 2nd monitor too) it shows a purple vertical line on the left side. It adds 2 pixels to the width and I can't adjust it with my monitor. It doesn't come up when I print screen. I tried changing the driver to the binary one (at the top) but that made it not show up at all. What do I do? Are some graphics cards just not compatible?

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• Absolutely Nothing Apearing in "Additional Drivers"

  - by Joshua Arroyo

  OK so I just got Ubuntu the other month or so. I'm running the 11.04 version currently and trying to install drivers for a Nvidia graphics card (it's my brother's computer and he currently cannot find the number of the card right now). I read that, to install the proper drivers for gaming, I would need to go into "Additional Drivers" and choose them myself. I clicked to go into "Additional Drivers" and it searched "for available drivers", then opened the additional drivers list. Lo and Behold, there was nothing, simply the message "No proprietary drivers are in use on this system" and the Help and Close buttons. Sorry if there's some silly simple answer to all of this, I'm new to this sort of thing (used to Windows simplicity, lol) and I really don't know what to do. Help would be much appreciated. Also, I should mention that the graphics card was installed and ran fine before switching from Windows XP to Ubuntu.

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• Using External Monitor with Laptop Monitor as separate monitors

  - by user14623

  I am trying to use 32"LCD monitor with my ubuntu 10.10 installation. I am trying to use my laptop screen and external monitor at the same time but having two separate desktops. I also want to use my laptop with 1280x800 resolution and external one with 1920 x 1080 using VGA. However, ubuntu sees my external LCD as a CRT and provide 13....x... resolution at the best not above. My graphics card driver is Nvidia 270.... driver. Is ubuntu capable of using two monitors separately or should i give up? Thank you

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• No Launcher, Messed Resolution and Artifacts!

  - by Felipe Ribeiro R. Magalhaes

  I installed Ubuntu 12.10 on my desktop, and it boot up ok, but I was having some artifacts, so I read somewhere that I needed nvidia drivers, I downloaded them, along with compiz (I enjoy the nice effects), but after that, when I rebooted the computer, the resolution was all messes up, and now I can't access anything because there is no launcher! I inserted Ubuntu CD, booted from the CD, the resolution was fine and eerything was OK, so I repaired the installation, but after restarting the computer it was all messed up again! Please help me! I'm running Ubuntu 12.10 on a Core i7 and a GTX 460 + GTX 280! How Ubuntu looks as soon as I turn on my computer on:

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• Supertuxkart not able to start

  - by subeh.sharma

  Was working fine before i played around with NVIDIA drivers and ended up with this problem. I tried running it through the terminal and i see these messages: subsharm@subsharm-ThinkPad-T61:~$ supertuxkart Irrlicht Engine version 1.7.2 Linux 3.0.0-15-generic #25-Ubuntu SMP Mon Jan 2 17:44:42 UTC 2012 x86_64 [FileManager] Data files will be fetched from: '/usr/share/games/supertuxkart/' [IrrDriver] Creating NULL device Irrlicht Engine version 1.7.2 Linux 3.0.0-15-generic #25-Ubuntu SMP Mon Jan 2 17:44:42 UTC 2012 x86_64 [IrrDriver] Trying OpenGL rendering. [IrrDriver] Tring to create device with 32 bits Xlib: extension "GLX" missing on display ":0.0". [IrrDriver Temp Logger] Level 1: No GLX support available. OpenGL driver will not work. [IrrDriver Temp Logger] Level 2: Fatal error, could not get visual. Segmentation fault subsharm@subsharm-ThinkPad-T61:~$ sudo Xorg -configure [sudo] password for subsharm: Fatal server error: Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again.

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• A certain flash application causes a system crash

  - by noobermin

  It's no surprise I guess. Go here to try it! http://www.belgeler.com/blg/2hni/griffiths-introduction-to-electrodynamics-3-ed-solutions-manual It's wonderful, after a few seconds, top shows that our good friend plugin-container takes 83% of the physical memory (8 GB) before everything freezes and the PC doesn't respond. I'm using Ubuntu 12.04 and I have an nvidia (GTS 250) card with the "post-release updates" version of the driver. OFFTOPIC: Yes, it's the solutions manual. I'm self-studying so I don't have a professor to check my work. Please don't judge me :)

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• Laptop takes a long time to boot after Grub menu

  - by Andres

  I am running a Asus R401VJ laptop (Latin America version of N46VJ) that has a Core i7 CPU and 8GB RAM. After my Grub menu, which is displayed for 2 seconds as I set it up, I'm getting a black screen with a blinking white cursor that is increasing my boot time to about 60 seconds. After a while Ubuntu runs fine, I just want to reduce my boot time. I don't know if this has something to do with my never used Nvidia 2GB GeForce GT 635M graphics card. Always when I tried to install the driver, I ended up with a ~600x800 screen resolution, and I fixed it by deleting a file called: xorg.conf from the /etc/X11/ directory, following a suggestion that I read in another forum. I would appreciate detailed answers, I'm still new at Ubuntu.

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• Low graphics mode on Ubuntu 12.04 with Intel Graphics

  - by NightShadeQueen

  When I boot, my computer just tells me it can't detect graphic card (or something else) settings and it has to use the low graphics mode. Then it gives me four choices, but doesn't let me choose any of them. I can get my computer to boot by going to some sort of terminal mode and then typing sudo gdm. The other graphics manager I have is lightdm. I originally had the nVidia propriety driver, and I've tried bumblebee. Mobile Intel Graphics Media Accelerator 4500M is my graphics card. Is there any way to fix this so I can use lightdm again?

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• Ubuntu 12.04: Unity stuck in 2D. Compiz crashes

  - by JohnK.

  I have been trying to get Unity to work in 3D and hardware wise there should be no problem. I have the 310.14 NVIDIA driver and am using a GTX660-Ti card. Output of: unity --replace Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...no Backend : gconf Integration : true Profile : unity Adding plugins Initializing core options...done compiz (core) - Fatal: No composite extension compiz (composite) - Error: initScreen failed compiz (core) - Error: Couldn't activate plugin 'composite' compiz (core) - Error: Plugin 'composite' not loaded. compiz (core) - Error: InitPlugin 'opengl' failed compiz (core) - Error: Couldn't activate plugin 'opengl' compiz (core) - Error: Plugin 'composite' not loaded. compiz (core) - Fatal: No composite extension compiz (core) - Fatal: No composite extension Segmentation fault (core dumped) What am I missing to get this working?

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• Ubuntu 12.04 "Do nothing" when "lid closed" blanks out external monitor

  - by Elijah Lynn

  This is not the same as this question. I have Ubuntu 12.04 running with an Nvidia card on a W510 Thinkpad. I have one external monitor connected. When I change the power settings to "Do nothing" when "Lid closed" it still keeps the system running which is great. However, it blanks out the display on any external monitors making the system useless. I plan on getting a dock soon and having to identical resolution monitors and would love to be able to dock the monitor and work as normal on the external monitors. Does anyone have a suggestion or fix for this? Should I report this as a bug or feature request?

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• terminal won't show in failsafex

  - by Samir Desai

  so after recently reinstalling some drivers I came across the issue detailed in this post How to fix "The system is running in low-graphics mode" error? I run 12.04 on my HP laptop with an Nvidia card. I went to GRUB and loaded failsafex to have the exact same problem described in the response up there, I then attempted to load the terminal, however when I do try and load the terminal I just get a blank screen and nothing else, is there any other easier way to access the terminal. I am quite new to Ubuntu.

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• How can I avoid the random restart of the xserver?

  - by Bernd

  I'm using a desktop pc with 64bit Ubuntu 12.04 (Kernel 3.2.0-24-generic). Hardware specs are - Intel Core i7 CPU 860 @ 2,80GHz x 8 - Nvidia GeForce GTS 250 - 750 GB Hard Disk ATA WDC WD7501AALS-00E3A0 (for my /home partition) - 128 GB Solid-State Disk ATA PLEXTOR PX-128M2S (for all other partitions) Since I reinstalled the PC with Ubuntu 12.04 the xserver restarts randomly. Most times when I watch a video in the browser (maybe a flash issue?) but sometimes the restart/crash appears when I'm working in an text-editor. How can I locate the problem? Which information is needed for a useful answer?

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• All video players display black screen.

  - by Dennis

  I'm working in 10.04 Lucid. All my video players (Movie Player and VLC) and the preview windows in editors (OpenShot and Pitivi) will only display a black screen when playing a video. The sound is fine and the videos work fine on other computers. I have tried multiple formats from varying sources .MOV taken from old ffmpeg projects, .AVI straight from a camera, .MP4 using h.264 from OpenShot on another system, .OGV from a gtk-recordmydesktop session on this very computer. I even get a pure black screen in the viewer when starting a remote session in VNC. This box has a GeForce 8400 GS using the Nvidia drivers in case it may be a card problem or setting.

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• Horible lag on Xubuntu media center setup

  - by William

  I am setting up a media center running Xubuntu 11.10 as a media center. It is using the XFCE desktop enviroment. I have the NVIDIA drivers installed from the Additional Drivers program, and uninstalled all but the esennitial software. The computer is a Dell Dimension 3000. You can view detailed technical specifications here. The graphics card installed is a Geforce 8400 GS. I have installed all updates through Update Manager. What can I do to fix the horrible lag? It makes watching TV impossible.I have uploaded two videos of the lag, here and here. The second one does not have sound because the sound stops playing on some channels that lag a lot. The TV card is a Hauppage 950q USB, and the TV recording program is Kaffiene. Please help me with this, I am trying to do this to show how great Ubuntu is to the rest of the family.

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• Dimming the backlight is irreversible on a Samsung Q210 notebook, what do I do?

  - by user27304

  I'm new to the community, although I have been using Ubuntu since 2010. I have a Samsung Q210 notebook; Specs: Intel® Core™2 Duo CPU P8400 @ 2.26GHz × 2 4 Gigs RAM Nvidia 9200m GS (although system information in Ubuntu doesn't know) 194 GB HD OS: Ubuntu 11.10 Kernel is 3.0.0-12-generic-pae Although Samsung seems to be infamous for problems with Ubuntu, after upgrading to Oneiric, finally the FN Brightness Buttons are recognized. The only problem is, after dimming the backlight for a fixed amount of steps (3 or 4, I dare not count now because that would mean rebooting because I can't see anything), the display goes completely dark and using the FN buttons to brighten the backlight does not work anymore (before reaching that threshold, going brighter after dimming works). Now what do I do? File a bug report? If not, what then? If yes, how? Not sure... guess I should ask here first.. thanks for answering in advance.

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• Unity and games don't work on new Thinkpad T420

  - by Clay Smalley

  Here's my setup: Lenovo ThinkPad T420, brand new NVIDIA Graphics Card 4GB of Ram 128GB Solid State Drive Intel Core i5 Processor Given these specs, there's no reason games and Unity shouldn't be working. The strange thing is that both do work when I run from a live USB, but not when Ubuntu is installed to the hard drive. Is there something different with the 3D capabilities of running from the computer as opposed to running from the live USB? Edit: Some more information: When I log in for the first time when running from the hard drive, Ubuntu says "It seems that you do not have the hardware required to run Unity. Please choose Ubuntu Classic at the login screen and you will be using the traditional environment."

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• First time using Ubuntu, need help with drivers!

  - by Nick

  I have just successfully built my first computer last night. I went through the boot menu and got Ubuntu 12.10 installed properly and everything. My question is...now what? There has to be some sort of drivers I need to install right? I can't connect to wi-fi or anything of that sort. I have an ASUS motherboard, model number M4N98TD EVO , and an NVIDIA Geforce GTX 650 grpahics card. I guess my main question is, can someone run me through step by step what I need to do after I install Ubuntu?

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• Metacity used with proprietary driver and proposed repository

  - by Oxwivi

  I enabled the proposed repository in a fresh install with the proprietary nvidia-173 driver. After the reboot, I noticed that minimizing and maximizing, there were none of the expected effect (using Ubuntu Classic, even with proprietary driver, Unity does not work - another issue). Furthermore I confirmed by trying to switch workspaces using keyboard shortcuts, and the square desktop wall was replaced by horizontally lined workspaces of Metacity. Of course, the upgraded Compiz could be responsible, but I can't figure out what to do - please advice. Additionally, if it's an issue with the softwares from proposed repo, how and what do I do to notify the developers of the issue?

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• Change screen resolution from terminal

  - by Keith

  When I enabled my Nvidia graphics card, it changed the resolution of my screen to larger than my screen. As the result I cannot access any functions that were previously on the right side of my screen. How do I undo this? I originally had 8.04 and was able to change the resolution to whatever I wanted. I'm a new user and can copy and paste commands from a post to terminal mode but that's about it. I have no idea what they are or what they mean.

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• Semi-transparent parts of theme show as full white

  - by Kilian

  I am running ubuntu 10.04 64bit on a macbook pro, using the nvidia-drivers version 260.19.29. As of a recent kernel update, all the semi-transparent parts of my theme show as full white. This means: no gradients on scrollbars and buttons, 'inverted' dividers in context menu's, full white gnome-do panel etc. Does anyone know what causes this and how I can fix it? Screenshot examples below. Scrollbars: Gnome-do: 'inverted' dividers in the context menu: (Last two links are not links due to not having sufficient points)

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• 11.04 64 bit live install cd freezes immediately on boot

  - by wrchis

  I am trying to install 11.04 alpha to a free set of partitions to try it out but neither the regular graphic installer or the alternate installer work. The graphic one freezes when I try to boot the cd (or cd image on usb stick rather) with a distorted static picture of my regular desktop repeated four times. I have an nvidia 240 graphics card if that is any help in diagnosis. I think it is a matter of getting the cd image to use a low rez video mode but I have no idea how to force that. I have used both the iso's from the regular page and the daily page (for several days so far) and they all do the same thing. I have tried both the internal utility and unetbootin to set up the stick with the same results. The alternate installer seems to work up to the point of the software selection step and then throws a 'failed step' error part way through.

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