The system is running in low-graphics mode (12.04)

Every time I boot I get the "The system is running in low-graphics mode" error.

The problem is similar to this one: "the system is running in low graphics mode" I get this message when I boot my ubuntu, but I don't think I can use the answer, because I do not have the same graphics card (mine is Intel).
I have searched Ask Ubuntu for a solution and tried some of the suggestions found here: How to fix "The system is running in low-graphics mode" error?.

I'm using an HP desktop with Ubuntu 12.04.

I have never had this problem before until about 12 hours ago. The only thing I can think of is that I had just installed about 35 updates via the update manager. The next time I switched on my computer I got the "The system is running in low-graphics mode" error.

Here is what I have tried:

• Switching to gdm


• After realising that I had used almost all my disk space I freed some by deleting a lot of movies and then rebooting.


• Reinstalling ubuntu-desktop


• Someone suggested editing the LightDM conf file, but I did not need to do this since the line was already unity-greeter

(It's tricky for me to copy any output and paste it here as long as I have this problem, since I can't get to the desktop etc.)

After trying all this, I chose to just reinstall Ubuntu (11.10). After doing that the problem was gone! But as soon as I upgraded to 12.04 and rebooted I got the error message again :(

Then tried removing the file /etc/X11/xorg.config.failsafe and restarted lightdm GUI server as in this answer. This did not help either.

I also tried running startx and got:

kb@kb-HP-Compaq-4000-Pro-SFF-PC:~$ startx
X.Org X Server 1.11.3 Release Date: 2011-12-16 X Protocol Version 11,
Revision 0 Build Operating System: Linux 2.6.42-37-generic i686 Ubuntu
Current Operating System: Linux kb-HP-Compaq-4000-Pro-SFF-PC
3.2.0-41-generic-pae #66-Ubuntu SMP Thu Apr 25 03:50:20 UTC 2013 i686 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-41-generic-pae
root=UUID=f5d21c1a-a302-4688-948b-470818bfb967 ro quiet splash

vt.handoff=7 Build Date: 11 April 2013  01:04:30PM xorg-server
2:1.11.4-0ubuntu10.13 (For technical support please see
http://www.ubuntu.com/support) Current version of pixman: 0.24.4
      Before reporting problems, check http://wiki.x.org
      to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting,
         (++) from command line, (!!) notice, (II) informational,
         (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Thu May  9 22:35:42 2013
(==) Using system config directory "/usr/share/X11/xorg.conf.d"

 Fatal server error: no screens found


 Please consult the The X.Org Foundation support
          at http://wiki.x.org  for help. Please also check the log file at "/var/log/Xorg.0.log" for additional information.

   ddxSigGiveUp: Closing log Server terminated with error (1). Closing
 log file. xinit: giving up xinit: unable to connect to X server: No
 such file or directory xinit: server error

I hope some of this info helps.

I had the same issue from updating. It seemed like xorg broke from not having a config file. Nor can it be auto-generated so I copied the xorg.conf.failsafe and made a new xorg.conf. Let me know if that helps.

I notice you deleted that file. This is what mine looks like. I am working on get this auto generation to work though.

Section "Device"
   Identifier  "Configured Video Device"
   Driver      "fbdev"
EndSection


Section "Monitor"
   Identifier  "Configured Monitor"
EndSection

Section "Screen"
   Identifier  "Default Screen"
   Monitor     "Configured Monitor"
   Device      "Configured Video Device"
EndSection