I have two computers. One intel i3 core with nvidia graphics card and the other amd 4000+ with nvidia graphics. In both these computers I upgraded from 13.10 to 14.04. Now both these computers are stuck up with the chosen wallpaper showing ubuntu 14.04 lts and nothing else. right click, ctrl+alt+t does not work. but ctrl + alt + f1 works and I am presented with terminal prompt. I have already updated nvidia drivers. tried reinstalling unity and desktop but no effect. I even tried sudo dconf reset -f /org/comiz/ but the outcome was Unable to launch D-Bus without X11 $Display.
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When I login, nothing happens.   I am presented with my desktop wallpaper.    No Dash, no Launcher, nothing.
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I'm currently running Windows 8.1 x64 (a problem in itself that I can't change sadly ;-P) with the latest version of VirtualBox (4.3.18 r96516). I managed to get the server version up and running with no issues but I cannot get the desktop version running.   I can boot to the menu and start the process (select the option to install and/or try) and it will get through the inital Ubuntu 14.10 loading screen (with the progess "bar/dots") but then we get to a nasty screen of distorted colors and that's it.   My hypothesis is that the display driver/server isn't working with VirtualBox and what I'm essentially seeing is the display in a crappy mode (16colors@62x24) because I am able to see a perfectly fine screen with cursor working and everything and then suddenly I'm in that nasty screen. The mouse does show up (nasty looking and filling the entire screen) but nothing else.   Here is a screenshot:    Here are my settings in an album (I can add more if desired but I put in what I thought were the most relevant):
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Well, this is new.  In the middle of troubleshooting all of the other issues with Ubuntu 14.04.1 LTS, I rebooted and it now comes up with a resolution of 800 X 600, and there are no other resolutions available.  I've already re-installed the nvidia-current driver twice.  mobo: M4A89GTD-PRO  Bios: 2101  cpu:  AMD Athlon(tm) II X4 645 Processor  ram:  6111188 kB  hdd:  ATA OCZ-VERTEX3  gpu:  GeForce GT 440  Mouse / keyboard: M510, K350 single unifying receiver  Linux 3.13.0-43-generic (x86_64) Ubuntu 14.04.1 LTS   edit - I should point out, this is a brand new installation from a fresh download.  I have not changed or altered or installed anything at all beyond running software updater a few times, installing the latest nvidia-current driver, and doing a sudo-apt update a few times.  But everything is exactly as it was installed with all of the defaults.  edit - based on a recommendation below, I've completely wiped the proprietary driver and replaced it with the xorg.edgers driver.  Technically, it corrected the problem, so this is solved.
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I recently installed Ubuntu 11.10 on my Mac Book Pro 7,1. I installed the NVIDIA driver (285). The brightness keys are working (F1 and F2) and I get the box showing the brightness but it does nothing. I can change the brightness in the NVIDIA X Server Settings application. How can I get the brightness working without uninstalling the driver? Thanks in advance.
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Since installing Ubuntu 12.10 I have been playing around trying to get my Radeon HD 5450 gpu to work with the proprietary driver, as from the start installing the driver meant losing unity.  I won't list the steps I took as it is not a requirement to answering this question.  After taking one measure and then installing fglrx-updates, upon reboot the system hung at the purple screen. So I decided to boot using nomodeset  I edited  quiet splash $vt_handoff   to look like this  quiet splash nomodeset   Making this change I am then able to log in with Unity and the proprietary driver installed and performing well. I would go as far as to say it performs better than it did in 12.04  fglrxinfo reads  display: :0  screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: ATI Mobility Radeon HD 5000 Series OpenGL version string: 4.2.11903 Compatibility Profile Context   Please note the way I have added nomodeset It had been a while since I have had to do this so it was done from memory. When looking for an answer to this question I came across  and discovered that my edit was supposed to go from  quiet splash $vt_handoff   to  nomodeset $vt_handoff   What has my nomodeset edit done? The only thing wrong that I have noticed is that I don't get the plymouth Ubuntu logo screen when booting.  If that is the only trade-off I am happy to make the edit permanant.
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I have GeForce GTX 560 Ti. I's worked fine in 12.04 with nvidia drivers. Unfortunately, after todays 12.10 update, something broke down.   I've tried nvidia-current, nvidia-current-updates and nvidia-experimantal. Always the same behaviour: Bad resolution in lightdm, after logging nothing except wallpaper. No unity panels, "win" key doesn't work.   After removing nvidia drivers everything work.
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The latest updates (4/1/2018) make my laptop constantly crash the GUI/Unity:  (Intel Pentium su4100 processor)  syslog:  Jan  5 11:38:53 1810 kernel: [ 1850.327738] compiz[11911]: segfault at 0 ip 00007f6c7baf0c16 sp 00007ffd5ec71c60 error 4 in i965_dri.so[7f6c7b513000+82d000]   After login I end up with an empty desktop, just a wallpaper, GUI/Unity are in a crash loop:   No panel.  No dash.  Can't start a program. Launcher disappears. Sidebar disappears. System crash. Windows key not working. The key combination Alt+Tab not working.   Simply, the computer is not usable. Same for guest login. The only thing working: open up a terminal CTRL+ALT+T to examine log files.  I somehow forced  to let me log in and file the bug, but still lots of problems:   Dash not working Alt+Tab not working Sometimes windows all disappear for a few seconds     Any ideas for a solution or workaround?   UPDATE     If you have the same/ very similar problems, follow the link to my    report and mark there that you're affected too. Or file your own. Please leave a comment   if you wish, or upvote - this is a nasty problem - but an answer should   offer a fix or a workaround so users can use their computer again.    Without , Ubuntu can't fix issues.
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As expected, Nvidia drivers have reduced my customizations. I can't login to Unity 3D session. I can't find any content to help me to uninstall the driver and I don't know what to do as I have never uninstalled them before.
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I've recently updated to Ubuntu 15.04 and after installing the latest nvidia drivers (346.59) which worked on ubuntu 14.10 seems to have caused some trouble on boot.  All I get is the following when booting:   A purple screen for about a second and then  [0.514409] ACPI PPC Probe failed. Starting version 219  A black screen with a message of my monitor saying : No Signal detected.   I am using a GTX 970.
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I installed Ubuntu 14.04 on my Lenovo IdeaPad Y510P today. Everything worked fine, but after installing my graphics card driver the background became pixelated (Nvidia GeForce GT755m). I downloaded the driver through Additional Drivers and selected Version 331.113 (Proprietary, tested). It was using Nouveau before.  When I apply Nouveau it becomes clean again, but it is much weaker when I open games, it gives me very low FPS even in Counter-Strike. With Nvidia driver FPS and everything else seems fine, except things look pixelated and when I minimize windows and maximize again, the window goes black.    I attempted to solve the problem myself by removing the old Nvidia driver and manually installing the latest version, but it did not help.  Please let me know if you need more details.
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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?
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The reason I'm asking is that none of the games I've installed through software center that require 3D accelartion like TORCS for instance will run. When I try to run then, nothing happens. I have a Dell Inspiron N5110 with a nVidia GeForce GT 525M.  I tried the following which I were some suggestions for people with similar problems:  lspci -v   Which gave me:  01:00.0 VGA compatible controller: nVidia Corporation Device 0df5 (rev a1) (prog-if 00 [VGA controller])     Subsystem: Dell Device 04ca     Flags: bus master, fast devsel, latency 0, IRQ 16     Memory at f5000000 (32-bit, non-prefetchable) [size=16M]     Memory at e0000000 (64-bit, prefetchable) [size=256M]     Memory at f0000000 (64-bit, prefetchable) [size=32M]     I/O ports at e000 [size=128]     Expansion ROM at f6000000 [disabled] [size=512K]     Capabilities: &lt;access denied&gt;     Kernel driver in use: nvidia     Kernel modules: nvidia_current, nvidia_current_updates, nvidia, nouveau, nvidiafb   I also tried:  egrep -i " connected|card detect|primary dev" /var/log/Xorg.0.log   Which gave me:  [    20.873] (II) intel(0): Output LVDS1 connected   And:  nvidia-smi -a   Which gave:  NVIDIA: could not open the device file /dev/nvidiactl (No such file or directory). Nvidia-smi has failed because it couldn't communicate with NVIDIA driver. Make sure that latest NVIDIA driver is installed and running.   I don't really understand what all this means.
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I used the upgrade manager to upgrade from 17.04 to 17.10. When I start the machine, I only get a black flickering screen now. I was using the nvidia binary drivers before the upgrade.     NOTE: This question (and answer) relate to a specific issue when upgrading from 17.04 to 17.10 while using Nvidia or AMD binary drivers. You might experience a completely different issue. For that please see the more general question .
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Currently using ubuntu 15.10 on azure and installed the gnome and vnc4server latest version on ubuntu. Please find log file below:  Current VNC client screen:    $ cat .vnc/myhost1\:1.log    --cut-- VNCSConnST:  Server default pixel format depth 16 (16bpp) little-endian rgb565 VNCSConnST:  Client pixel format depth 8 (8bpp) colour-map Window manager warning: Invalid WM_TRANSIENT_FOR window 0x20000c specified for    0x20000b (I        nitialization error). Error org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name    'org.gnome.ze        itgeist.Engine': no such name amdxdg-su: no graphical method available for invoking '/usr/bin/amdcccle' as 'root'  $ cat .vnc/xstartup unset SESSION_MANAGER  [ -x /etc/vnc/xstartup ] &amp;&amp; exec /etc/vnc/xstartup [ -r $HOME/.Xresources ] &amp;&amp; xrdb $HOME/.Xresources  vncconfig -iconic &amp;  gnome-panel &amp; gnome-settings-daemon &amp; metacity &amp; nautilus -n &amp; gnome-terminal &amp;   How to get 24bit color with wide screen (Now I getting square screen in vnc client)
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Ok, I'm a total Linux noob. I was able to install 12.4 without issue, except that it says in the system settings that the graphics card/driver is "unknown".  I have NVIDIA GeForce FX 5200, and have not been able to get it installed. I've found the driver at NVIDIA but couldn't figure out how to actually install it. I found instructions that used apt-get to automatically find the current driver and install it, and that came close. At least then it showed up in the 3rd party drivers list. It said it was installed but not being used? And I was unable to find out why that might be, or how to get the system to use it  Two questions: 1. CAN/SHOULD my graphics card work with 12.4? 2. If so, HOW?  I'm running a 100% fresh install, so what's the step-by-step from there?
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I have installed Ubuntu 14.04. It worked for approx. 2 days. But today when I turned it on launcher &amp; Menu bar was absent &amp; ctrl+alt+t was also not working. I tried "sudo service lightdm restart" it didn't worked. Please help me.. and launcher is present in guest session but not in Admin login..
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I have installed Lubuntu on my Dell Chromebook 11 and everything works except for the backlight. Can't set the backlight with the brightness keys, neither with xbacklight,xdotool or any other GUI tool.   I tried with a combination of grub options like acpibacklight=vendor acpiosi=Linux, acpibacklight=legacy acpiosi=Linux, acpibacklight=vendor acpiosi= and acpibacklight=legacy acpiosi= without success. Even more strange is that /sys/class/backlight/ is empty.   dmidecode -  acpi (grep -r . /proc/acpi) -  acpidump - paste.ubuntu.com/9880816/ results.log (fwts) - paste.ubuntu.com/9880883/ video (dmesg | grep 'ACPI: Video') - paste.ubuntu.com/9880928/ version (cat /proc/version) - paste.ubuntu.com/9880942/   Does that give any useful information on the issue?  Given that the VGA Graphic hardware is at the addres 00:02.0 I tried to set its register values manually like this setpci -s 00:02.0 F4.B=30 without success as the backlight stays the same. Shouldn't this work on every device given that it interfaces directly to the hardware?