[REGRESSION][BISECTED] 58a261bfc967: choppy GPU performance

[Mario Limonciello]

On 10/1/2024 16:14, John Rowley wrote:
> Disabling PSR as per Leo's reply seems to have done the trick!
> 
> Stock 6.12-rc1 (without revert): BROKEN
> 
>      /sys/kernel/debug/dri/0000:c1:00.0/eDP-1/psr_state:
>      6
> 
>      /sys/kernel/debug/dri/0000:c1:00.0/eDP-1/psr_capability:
>      Sink support: yes [0x03]
>      Driver support: yes
> 
> With amdgpu.dcdebugmask=0x800: BROKEN
> 
> With amdgpu.dcdebugmask=0x10: FIXED! Performance is as it was on 6.11.
> 
>      /sys/kernel/debug/dri/0000:c1:00.0/eDP-1/psr_state:
>      0
> 
>      /sys/kernel/debug/dri/0000:c1:00.0/eDP-1/psr_capability:
>      Sink support: yes [0x03]
>      Driver support: no [0xffffffff]
> 
> I have the older Framework 13 panel (BOE 0x0BCA, 2256x1504 @ 59.999 Hz) so I assume PSR isn't supported according to Mario, yet psr_{state,capability} above seem to indicate otherwise?
> 

PSR and Replay are two different things.  But from your above analysis 
it does confirm it's a PSR issue.

There's a patch that Hamza attached to 
https://gitlab.freedesktop.org/drm/amd/-/issues/3658.

Can you try that?

Thanks,