Unplayable framerates in game but specific kernel versions work, maybe amdgpu problem

[Alex Deucher]

On Thu, May 8, 2025 at 9:13 AM <machion at disroot.org> wrote:
>
> Hello kernel/driver developers,
>
> I hope, with my information it's possible to find a bug/problem in the
> kernel. Otherwise I am sorry, that I disturbed you.
> I only use LTS kernels, but I can narrow it down to a hand full of them,
> where it works.
>
> The PC: Manjaro Stable/Cinnamon/X11/AMD Ryzen 5 2600/Radeon HD 7790/8GB
> RAM
> I already asked the Manjaro community, but with no luck.
>
> The game: Hellpoint (GOG Linux latest version, Unity3D-Engine v2021),
> uses vulkan
>
> ---
>
> I came a long road of kernels. I had many versions of 5.4, 5.10, 5.15,
> 6.1 and 6.6 and and the game was always unplayable, because the frames
> where around 1fps (performance of PC is not the problem).
> I asked the mesa and cinnamon team for help in the past, but also with
> no luck.
> It never worked, till on 2025-03-29 when I installed 6.12.19 for the
> first time and it worked!
>
> But it only worked with 6.12.19, 6.12.20 and 6.12.21
> When I updated to 6.12.25, it was back to unplayable.

Can you bisect to see what fixed it in 6.12.19 or what broke it in
6.12.25?  For example if it was working in 6.12.21 and not working in
6.12.25, you can bisect between 6.12.21 and .25.

Alex

>
> For testing I installed 6.14.4 with the same result. It doesn't work.
>
> I also compared file /proc/config.gz of both kernels (6.12.21 <>
> 6.14.4), but can't seem to see drastic changes to the graphical part.
>
> I presume it has something to do with amdgpu.
>
> If you need more information, I would be happy to help.
>
> Kind regards,
> Marion