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Since I have 4 GPUs 

$ lspci | grep VGA
02:00.0 VGA compatible controller: NVIDIA Corporation GM200 [GeForce GTX TITAN X] (rev a1)
03:00.0 VGA compatible controller: NVIDIA Corporation GM200 [GeForce GTX TITAN X] (rev a1)
83:00.0 VGA compatible controller: NVIDIA Corporation GM200 [GeForce GTX TITAN X] (rev a1)
84:00.0 VGA compatible controller: NVIDIA Corporation GM200 [GeForce GTX TITAN X] (rev a1)

and here is the content of /etc/X11/xorg.conf.failsafe

$ cat /etc/X11/xorg.conf.failsafe
Section "Device"
    Identifier  "Configured Video Device"
    Driver      "vesa"
EndSection

Section "Monitor"
    Identifier  "Configured Monitor"
EndSection

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

    "Configured Video Device"
EndSection

My question is what the current graphic driver this machine is using?

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1 Answer 1

Reset to default
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Read the log file in /var/log. Look for name like Xorg.0.log. that will display driver. Will require root permission or sudo to read that.

Other ideas to run in a terminal:

  1. lspci in terminal will show if you have nvidia card and
  2. /sbin/lsmod will show kernnel modules

These may want sudo first, possibly.

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