Disable panel self refresh with amdgpu

[prettynewby]

I was trying to google for an info how to disable “panel self refresh” as i seem to be running into this amdgpu bug 680M (Rebrandt) laptop randomly becomes very slow to update the screen (#3647) · Issues · drm / amd · GitLab and someone there mentioned disabling panel self refresh fixes this issue temporarily (even there won’t be power optimization from the psr) and this is the first result

i randomly get a lot of

amdgpu 0000:c3:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data
amdgpu 0000:c3:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data
amdgpu 0000:c3:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data

and the whole system works in like 0.5 fps

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”

I am not sure if this information here is correct, i am afraid i will break something

[Nachlese]

You replied to a two and a half year old post.
Better provide your own context by creating your own thread.

@prettynewby

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

Only the first line - leave the second line be as it was → empty

https://unix.stackexchange.com/questions/440961/grub-cmdline-linux-default-vs-grub-cmdline-linux

After you changed something there, run update-grub - the second post here mentions this.

[prettynewby]

allright, thanks

i have replied to this topic because this is the thread that is being linked to when you search for “manjaro disable psr”

[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.

[BG405]

@prettynewby

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

I’d just comment out that second line, and probably also remove “quiet” and “splash” from the first one.

[cscs]

I tend to prefer leaving all defaults on the … DEFAULT line, and putting ‘extras’ on the other.

Still probably an exercise in futility to apply intel-specific options to an amd system though.