after upgrading to the newest version I can't start up my pc. I receive the error: The system is running in low-graphics mode  After looking into the forums, I go into the terminal (Ctrl + Alt + F1) I assumed this could be related to graphic drivers.  It seems I need to install libc6-i386, but the dependencies are broken:  $ sudo apt-get install libc6:i386 Reading package lists... Done Building dependency tree        Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:  The following packages have unmet dependencies:  libc6:i386 : Depends: libgcc1:i386 but it is not going to be installed E: Unable to correct problems, you have held broken packages.   I'm very noob. Not sure what details you would need.  Output of apt-cache policy libgcc1:i386 is  libgcc1:i386: installed version: 1:4.7.3-1ubuntu1 candidate: 1:4.7.3-1ubuntu1 table of versions: *** 1:4.7.3-1ubuntu1 0 500 http://sk.arcive.ubuntu.com/ubuntu/ raring/main i386 Packages 100 /var/lib/dpkg/status
466
Occasionally, when I'm installing stuff, I get an error like the following:  Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:  The following packages have unmet dependencies:  package1 : Depends: package2 (&gt;= 1.8) but 1.7.5-1ubuntu1 is to be installed E: Unable to correct problems, you have held broken packages.   How can I resolve this?
83914
Unity won't run on my new Ubuntu 11.04 install (with a Nvidia GeForce GO 7400). Ubuntu classic desktop works though, I tried all different drivers provided in the repositories.   Doing System → Administration → Additional Drivers gives me a warning :      This driver is activated but not currently in use.   I even tried the Nvidia driver from the official Homepage.  After some googling, I found the tool /usr/lib/nux/unity_support_test -p which tells me that my card is blacklisted. The other tests show a green yes.  Is this a bug? Or is my card too old which would be pretty surprising for me :P ?  Thanks.
6040
I am not able to play "Half-Life-2" on Steam + Ubuntu 14.04 . Error shown in message box on screen:      Could not find required OpenGL entry pint 'glGetError'! Either your video card is unsupported, or your OpenGL driver needs to be updated.   I have a Dell Inspiron Laptop.  My OS is Ubuntu 14.04 and my graphics card is AMD Radeon HD 8600M.  I have installed AMD properietry Driver.    The partial output of "glxinfo" is as follows:      name of display: :0     libGL: screen 0 does not appear to be DRI3 capable     libGL: pci id for fd 4: 8086:0a16, driver i965     libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/tls/i965_dri.so     libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/i965_dri.so     libGL: Can't open configuration file /home/arushi/.drirc: No such file or directory.     libGL error: failed to load driver: i965     libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/tls/swrast_dri.so     libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/swrast_dri.so     libGL: driver does not expose __driDriverGetExtensions_swrast(): /usr/lib/i386- linux-gnu/dri/swrast_dri.so: undefined symbol: __driDriverGetExtensions_swrast     libGL: Can't open configuration file /home/arushi/.drirc: No such file or directory.     libGL: Can't open configuration file /home/arushi/.drirc: No such file or directory.     libGL error: failed to load driver: swrast     display: :0  screen: 0     direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
66052
I installed the latest updates from the software update center today (I update when ubuntu displays a notification), restarted the machine and now it's unable to boot properly. The best screen I can get is displayed below. If I resize the screen then it goes to black. If I restart the machine then it displays just purple.    Note that the screen is unresponsive, I can't click anything on it.  Other than SMBus Host Controller not enabled! I don't see any other warnings. Note that I don't know if this warning existed before the update.  I'm running ubuntu 18.04 in vwmare workstation 15 player (latest update). Any ideas on how to begin debugging this?    Update: Trying to boot Ubuntu, with Linux 4.15.0-50-generic instead of Ubuntu, with Linux 4.15.0-51-generic didn't help.  Update: Blacklisting i2c-piix4 according to  answer didn't remove the warning or fix the issue.  Update: Blacklisting i2c-piix4 according to  answer removed the warning but didn't fix the issue.  Update: The answer from Uzair helped me log into the account (run dpkg and update grub from recovery mode).  Answer:  answer helped me fully to resolve the issue. I don't understand the fix. If anyone does, put it as the answer and I'll mark it as such.  Regarding duplicity: The answer from another question did solve my issue but I don't think my question is a duplicate of that one. I began with a fresh install of 18.04 a few months ago, did several updates without an issue and only today experienced issues which are different than those described in the other question. I think we experienced different bugs with wayland and we both solved it by disabling it which is a destructive solution applicable to many questions.
61862
My Ubuntu version is new, and Intel Graphics Installer doesn't allow me to install the Intel video drivers. It says "Distribution not supported" How can I resolve this problem?
43331
I recently updated the drivers for my NVIDIA GeForce video card to version 364.72 (or other version in the 364.xx series), and I'm now experiencing issues such as the following:   Games or other graphically intensive applications crash or hang I get BSODs that are associated with the graphics driver, e.g. nvlddmkm.sys or dxgkrnl.sys Graphical glitches such as missing or misplaced text or icons, display corruption, or a black screen occur The graphics driver crashes regularly, with the message "Display driver [...] has stopped responding and has recovered." The fan on my graphics card spins up to high speed, or the card makes excessive noise   Reinstalling the graphics driver did not help. What's going on?     This question comes up often and the answers are usually the same. This post is meant to provide a definitive, canonical answer for this problem. Feel free to edit the answer to add additional details.
3359
During the upgrade, my computer shut down.  After starting it I see a black screen with [OK] sentences with finished tasks after them. The last one is:  [OK] Started GNOME display Manager.       Dispatcher Service...ed database.s.pp link was shut down...   Do I need to format my computer? If not, what else can I do?
20800
I can't execute newest Blender 2.80, it says that I need a graphics card that supports OpenGL 3.3 or higher ERROR: A graphics card and driver with support for OpenGL 3.3 or higher is required  Processor: AMD A6-3670 APU with Radeon(tm) HD Graphics, 2695MHz BIOS Version: HPQOEM - 1072009 Dedicated GPU:   This is a very old PC, but when I search online it seems that theoretically Blender 2.8 should run since my openGL is 4.4
5882
I have 14.04.5/16.04 or newer and an AMD GPU. I'm not getting the performance I want, and some programs say they need things like OpenCL.  I've heard about fglrx, but if I try to install it on my machine, it breaks and I have no GUI.  Is there anything I can do to get my AMD card working to its full potential?
27223
Recently, i was installing the new version from 13.04 to 13.10 ubuntu while also watching a video.  Well, guess what happened, my desktop crashed for like 4 minutes and then upon gaining access to the desktop again everything seemed messed up like box symbols where characters should be.  I know it was a bad idea but i decided to reboot halting the installation process and now i am stuck with this error.  dpkg: error processing unity-lens-photos (--configure): package is in a very bad inconsistent state - you should reinstall it before attempting configuration.  Errors were encountered while processing: untity-lens-photos e: subprocess /usr/bin/dpkg returned an error code (1).   And it pretty much pops up everytime i try to upgrade, or install anything.  This was after i finished updating the rest of my files.  I have tried many things and read many threads.  I am really lost right now, please help.  Also i have no access to a panel and i am currently trying everything in the terminal.  Attempts to install a gnome panel have been halted by the error.
76190
What happened  I was working on my laptop while it upgraded from 15.10 to 16.04 (which I admit was a mistake) when suddenly the Unity overlay disappeared and the only thing on screen was the Firefox browser window. I switched to a new terminal, logged in and tried to run sudo service lightdm restart but instead of restarting correctly, the screen started turning on and off repeatedly, which freaked me out, so I physically turned off the PC.  Long story short: I forced a shutdown halfway through the Ubuntu upgrade.  Ever since, any attempts of logging in normally have been met with a solid black screen and the idle whirring of the CPU fan.  What I have tried  I have tried the recovery mode boot up, but no luck (The log does greet "Welcome to Ubuntu 16.04 LTS!"). I tried out each option that seemed useful:   dpkg goes through the packages as advertised, but strangely enough it always locks up on some Braille package until I do Ctrl+C, at which moment it spouts some error messages and then I think throws me into the normal boot. failsafeX results in a similar situation to the normal boot: a black void. fsck says the single partition I have is a-ok. grub seems to get a bunch of stuff. Don't know if it searches locally or fetches from the internet. network didn't work I think.   I tried following  but couldn't do the sudo part because the filesystem was mounted as readonly. So I ran fsck which mounts as RW and tried again.   This time, after running apt-get autoremove it went through many packages (Setting up foobar (X.Y.ZubuntuN) ...), sometimes installing packages, which I assume is the usual behavior. One thing to note though is it kept getting stuck several times, so I had to Ctrl+C it out of processing the current package. It finally ended on "Processing was halted because there were too many errors.".  While  seems to mention some of the graphics problems I've been experiencing... I have Intel HD Graphics, not Nvidia. I'll keep looking into it.
78858
I have a laptop with ATI Radeon 6770M HD Hybrid graphics card. In Ubuntu 12.04, I installed the fglrx driver through "additional drivers" and it worked. (I can even switch GPUs). But in the new Ubuntu 12.10, after installing, Unity won't load.   Only the mouse and the wallpaper. If I initialize the settings sudo aticonfig --initial then after rebooting it gives a warning saying I'm in low graphics mode! How to fix this?  Earlier I used software source to install the drivers. But when using the terminal, I got this warning :   update-alternatives: warning: forcing reinstallation of alternative /usr/lib/fglrx/ld.so.conf because link group x86_64-linux-gnu_gl_conf is broken   Update : Filed a bug report in launchpad :
101210
Just bought a Geforce GTX 660 and replaced my Radeon HD 5870 (it finally died after 3 years). I'm having terrible problems getting the video card to work. As I only had command line options so far I've ran:  (purged fglrx*)  then  sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update sudo apt-get install nvidia-331  and then I started getting low graphics mode errors. did some searching on my tablet, and I tried several things but what finally worked better was:   sudo apt-get install bumblebee bumblebee-nvidia  However now that I'm logged into my computer finally, I have no access to terminal, no access to the top bar, and hitting Super Key does nothing, alt-f2 does nothing, and I only can post because I tried running WoW and it had an error and the error report opened a link.   All I can see on my desktop is my wallpaper and desktop icons. I can CTRL+ALT+F1, and navigate to the downloaded official nvidia driver, however that won't run because of x-server, and I can't run it from my desktop.   Can anyone help me?
94130
EDIT:  I have added a new answer below for Ubuntu 20.04 LTS and CUDA 11.1.1.  See below.  I have a system with a NVIDIA card that has a compute support of 3.5+ compared on .  How do I install CUDA and the NVIDIA drivers in Ubuntu without downloading the .deb files from NVIDIA?
72523
I'm using latest Ubuntu GNOME. When I download the steam-installer though software it works, after that nothing happens no update and it won't launch.  Here is the error message I get when I try to launch steam in a terminal:  $ steam Running Steam on ubuntu 16.04 64-bit STEAM_RUNTIME is enabled automatically  grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc Installing breakpad exception handler for appid(steam)/version(1461972496) libGL error: unable to load driver: swrast_dri.so libGL error: failed to load driver: swrast
76080
In System Info in 11.10, the graphics driver wasn't detected. I use ACER Aspire 4750 with Intel Core i3-2340M and Intel HD Graphics 3000 graphic card  How to install the driver for my Ubuntu?
72963
I have been having some screen freezing issues on my new Ubuntu 16.04 system, and have been in the troubleshooting process for this issue. I thought it was a graphics driver problem, as I am running an AMD R9 380x card which was supposed to be fully supported by the open-source AMDGPU driver preinstalled with 16.04, but after looking around online, many people seem to have issues with. I thought the answer would be to install the recently released AMDGPU-Pro driver , following the instructions from . However, when I reboot I am getting a black screen. Is there an easy way to revert my changes back? My machine was semi-functional with the freezing issue but now with no video at all is useless to me. How to proceed?