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From:   Dave Airlie <airlied@gmail.com>
Date:   Sun, 19 Nov 2023 16:47:01 +1000
Message-ID: <CAPM=9tw-8pQWFso0zuLqpsqd5BSHWtc4As9ttdjY-DDr70EMqQ@mail.gmail.com>
Subject: Re: Radeon regression in 6.6 kernel
To:     Linux regressions mailing list <regressions@lists.linux.dev>
Cc:     Phillip Susi <phill@thesusis.net>,
        Luben Tuikov <luben.tuikov@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>,
        dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        "amd-gfx@lists.freedesktop.org" <amd-gfx@lists.freedesktop.org>
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>
> On 12.11.23 01:46, Phillip Susi wrote:
> > I had been testing some things on a post 6.6-rc5 kernel for a week or
> > two and then when I pulled to a post 6.6 release kernel, I found that
> > system suspend was broken.  It seems that the radeon driver failed to
> > suspend, leaving the display dead, the wayland display server hung, and
> > the system still running.  I have been trying to bisect it for the last
> > few days and have only been able to narrow it down to the following 3
> > commits:
> >
> > There are only 'skip'ped commits left to test.
> > The first bad commit could be any of:
> > 56e449603f0ac580700621a356d35d5716a62ce5
> > c07bf1636f0005f9eb7956404490672286ea59d3
> > b70438004a14f4d0f9890b3297cd66248728546c
> > We cannot bisect more!
>
> Hmm, not a single reply from the amdgpu folks. Wondering how we can
> encourage them to look into this.
>
> Phillip, reporting issues by mail should still work, but you might have
> more luck here, as that's where the amdgpu afaics prefer to track bugs:
> https://gitlab.freedesktop.org/drm/amd/-/issues
>
> When you file an issue there, please mention it here.
>
> Furthermore it might help if you could verify if 6.7-rc1 (or rc2, which
> comes out later today) or 6.6.2-rc1 improve things.

It would also be good to test if reverting any of these is possible or not.

File the gitlab issue and we should poke amd a but more to take a look.

Dave.