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I just started using Ubuntu 22.04 few months ago and I'm very new to this.

I want to check if it is possible to use the Intel integrated graphics for desktop use, and my dedicated R9 380 GPU for gaming? The reason for this is my DGPU only has 2 GB VRAM and will always run with extreme frame drops (<10 fps) for games that normally would run on Windows.

I googled and somewhat found a solution by following this post. I did the fix by editing the /etc/X11/xorg.conf file as follows:

Section "ServerLayout"
    Identifier     "layout"
    Screen      0  "intel" 0 0
    Screen      1  "amdgpu" 3000 0

Section "Device"
    Identifier      "intel"
    Driver          "intel"
    BusId           "PCI:0:2:0"
    Option "AccelMethod" "sna"
EndSection


Section "Device"
    Identifier  "amdgpu"
    Driver      "amdgpu"
    BusID       "PCI:1:0:0"
EndSection


Section "Screen"
    Identifier      "intel"
    Device          "intel"
EndSection


Section "Screen"
    Identifier "amdgpu"
    Device     "amdgpu"
    Option     "AllowEmptyInitialConfiguration" "true"
EndSection

I am now able to run the games with same/better performance than I did with Windows, but I believe this workaround caused a few side effects.

The current issues are distorted window capture using OBS and Ubuntu is no longer able to login through Xorg.

Xorg login screen:

Xorg login screen

Additionally the output for inxi -G shows Display: wayland server: X.Org. Is this correct?

karel
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rlcf101
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    which instructions from the linked post did you follow? There are many instructions there, some of which distinctly don't work. – Esther Sep 21 '22 at 17:01
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    also what does "no longer able to login through xorg" mean? errors, something else? – Esther Sep 21 '22 at 17:03
  • Thank you for the comment, I did the "fix" by editing the /etc/X11/xorg.conf. I have edited my original post above to reflect the specific fix and what I meant by logging in through ubuntu xorg. Every time I tried to log in through xorg, the screen will loop back into the login. – rlcf101 Sep 21 '22 at 23:48

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