Disable panel self refresh with amdgpu

[cscs]

@prettynewby

So, the way to do it is to open this file /etc/default/grub and then add these 2 lines?

GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash i915.enable_psr=0”
GRUB_CMDLINE_LINUX=“i915.enable_psr=0”

No.
First, you dont need to duplicate the entries. Just one on one of the lines is fine.

Second … that option is very much for intel. You state you have amd.

AMD has a bunch of options, which I detailed here:

[Unstable Update] October 2024 Edition

So my case is likely related to PSR. (a power saving feature) With amdgpu there are certain approaches and workarounds that I have not investigated. But for amdgpu you could use a boot option derived from these values; enum DC_DEBUG_MASK { DC_DISABLE_PIPE_SPLIT = 0x1, DC_DISABLE_STUTTER = 0x2, DC_DISABLE_DSC = 0x4, DC_DISABLE_CLOCK_GATING = 0x8, DC_DISABLE_PSR = 0x10, DC_FORCE_SUBVP_MCLK_SWITCH = 0x20, DC_DISABLE_MPO = 0x40, DC_ENABLE_DPIA_TRACE = 0x80, DC_ENABLE_DML2 = 0x100, D…

And whenever you edit grub options you need to run

sudo update-grub

For them to take effect.