linux-kernel - Re: 6.11/regression/bisected - after commit 1b04dcca4fb1, launching some RenPy games causes computer hang

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Message-ID: <ffd2c40c-1c2e-4465-b26f-88d5e08a80d9@amd.com>
Date: Tue, 3 Sep 2024 19:15:27 -0400
From: Leo Li <sunpeng.li@....com>
To: Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>,
 Harry Wentland <harry.wentland@....com>, zaeem.mohamed@....com,
 pekka.paalanen@...labora.com, "Wheeler, Daniel" <daniel.wheeler@....com>,
 "Deucher, Alexander" <alexander.deucher@....com>,
 amd-gfx list <amd-gfx@...ts.freedesktop.org>,
 dri-devel <dri-devel@...ts.freedesktop.org>,
 Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
 Linux regressions mailing list <regressions@...ts.linux.dev>
Subject: Re: 6.11/regression/bisected - after commit 1b04dcca4fb1, launching
 some RenPy games causes computer hang




On 2024-09-03 02:35, Mikhail Gavrilov wrote:
> On Sun, Aug 25, 2024 at 2:12 AM Mikhail Gavrilov
> <mikhail.v.gavrilov@...il.com> wrote:
>>
>> Hi,
>> Is anyone trying to look into it?
>> I continue to reproduce this issue on fresh kernel builds 6.11-rc4+.
>> In addition to the RenPy engine, the problem also reproduces on games
>> from Ubisoft, such as Far Cry 4.
>> A very important note that I missed in the first message.
>> To reproduce the problem, you need to enable scaling in Gnome for
>> HiDPI monitors.
>> I am using 4K resolution with 200% of fractional scaling.
> 
> Sorry for persistence, but I'm afraid there's no time left to fix this
> regression.
> There's a week left until the release.
> A month later, no one has looked at what the problem is.
> 

Hi Mike,

Super sorry for the ridiculous wait. Your first two emails slipped by my inbox,
which is really silly, given I'm first in the to field...

Thanks for bisecting and finding a free game to reproduce it on. I did not have
luck reproducing this today, but I am on sway and not gnome. While I get gnome
set up, will you be able to test which one of these reverts fixes the hang for
you? Whether just 1/2 is enough, or both 1/2 and 2/2 is required?

I applied them on top of Linus's v6.11-rc6 tag, so hopefully they'll git am
cleanly for you:

1/2:
https://gist.github.com/leeonadoh/69147b5fa8d815b39c5f4c3e005cca28#file-0001-revert-drm-amd-display-move-primary-plane-zpos-highe-patch
2/2:
https://gist.github.com/leeonadoh/69147b5fa8d815b39c5f4c3e005cca28#file-0002-revert-drm-amd-display-introduce-overlay-cursor-mode-patch

Thanks,
Leo