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I have recently purchased a new discrete GPU and have to configure the XServer. In a forum I found the advise first to back-up the config-file like that: sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bak but it just puts out the error: file or directory not found

So if I cannot back-up the file how should I open and configure it? Please help!

I am using Ubuntu 14.04 64-Bit, with an AMD Kaveri-APU with 16GB RAM. The GPU I want to get to work in my system is the AMD R9-280.

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  • [Simple run # echo $DISPLAY , to detect which it , then run # Xorg -configure :0 , # sudo cp ~/home/.xorg.conf.new /etc/X11/xorg.conf]
    – user643653
    Nov 11, 2019 at 23:19

1 Answer 1

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xorg.conf is not found by default .

you can boot into recovery mode and select Root Shell.

run :

  X -configure

Then:

cp /root/xorg.conf.new /etc/X11/xorg.conf

Reboot and you can edit the new Xorg.conf.

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  • Okay, I could access the root shell fine but when I typed in X -configure this error appeared: Fatal server error: could not create lock file in /tmp/.tX0-lock Please consult the The X.Org Foundation support at wiki.x.org for help
    – MalteK
    Aug 18, 2014 at 18:56
  • Ok so that issue is dealt with. So now how can I open it? I tried gksudo gedit /etc/X11/xorg.conf but then my system got all laggy and I had to shut it down. What did I do wrong?
    – MalteK
    Aug 21, 2014 at 14:08
  • [check /var/log/Xorg.0.log Fatal server error: could not create lock file in /tmp/.tX0-lock may because conflict files in /usr/share/X11/xorg.conf.d]
    – user643653
    Nov 11, 2019 at 23:22

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