linux-kernel - Re: regression/bisected/6.7rc1: Instead of desktop I see a horizontal flashing bar with a picture of the desktop background on white screen

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Message-ID: <99ef9596-d4f8-49e2-acbe-ed7486310f84@amd.com>
Date:   Thu, 16 Nov 2023 11:46:58 +0100
From:   Christian König <christian.koenig@....com>
To:     "Lee, Alvin" <Alvin.Lee2@....com>
Cc:     Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        "Wheeler, Daniel" <Daniel.Wheeler@....com>,
        "Wu, Hersen" <hersenxs.wu@....com>,
        "Mahfooz, Hamza" <Hamza.Mahfooz@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
Subject: Re: regression/bisected/6.7rc1: Instead of desktop I see a horizontal
 flashing bar with a picture of the desktop background on white screen

Am 15.11.23 um 21:08 schrieb Mikhail Gavrilov:
> On Wed, Nov 15, 2023 at 11:39 PM Lee, Alvin <Alvin.Lee2@....com> wrote:
>> This change has a DMCUB dependency - are you able to update your DMCUB version as well?
>>
> I can confirm this issue was gone after updating firmware.
>
> ❯ dmesg | grep DMUB
> [   11.496679] [drm] Loading DMUB firmware via PSP: version=0x07002300
> [   12.000314] [drm] DMUB hardware initialized: version=0x07002300
>

Mhm, that's a quite ugly problem.

The driver is supposed to work with older firmware as well or at least 
issue a warning and provide a reasonable fallback.

How are we going to handle this?

Thanks,
Christian.