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In my Ubuntu 20.04.3 LTS the resolution always stuck at 640x480. I can change resolution with xrandr after login but as I start computer again it come back at 640x480. I don't want to use xrandr again and agian. Is there any different way to change resolution to 1024x768 permanently?

When booting I saw this error may be it is related to this issue :

Problem1

Problem2

GPU details :

06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Picasso (rev c9) (prog-if 00 [VGA controller])
    Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Picasso
    Flags: bus master, fast devsel, latency 0, IRQ 46
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    Memory at f0000000 (64-bit, prefetchable) [size=2M]
    I/O ports at e000 [size=256]
    Memory at fcc00000 (32-bit, non-prefetchable) [size=512K]
    Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: amdgpu
    Kernel modules: amdgpu
Mudit
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  • There is "no EDID" error. Are you using some VGA adapter. You will need to replace it, or set resolution manually using xrandr. You can set the command to be run autimatically on boot. – Pilot6 Jan 28 '22 at 14:28
  • Yes I'm using a VGA cable. Ok I'll try to set xrandr to run automatically. Thanks You very much :) – Mudit Jan 28 '22 at 14:31

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