linux-kernel - Re: 6.10/bisected/regression - commits bc87d666c05 and 6d4279cb99ac cause appearing green flashing bar on top of screen on Radeon 6900XT and 120Hz

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Message-ID: <f2c15b94-5b94-4e58-959f-4912047eec47@amd.com>
Date: Tue, 9 Jul 2024 08:57:18 -0600
From: Rodrigo Siqueira Jordao <Rodrigo.Siqueira@....com>
To: Linux regressions mailing list <regressions@...ts.linux.dev>,
 Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>,
 Alex Deucher <alexdeucher@...il.com>
Cc: "Mahfooz, Hamza" <Hamza.Mahfooz@....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>
Subject: Re: 6.10/bisected/regression - commits bc87d666c05 and 6d4279cb99ac
 cause appearing green flashing bar on top of screen on Radeon 6900XT and
 120Hz



On 7/9/24 6:41 AM, Linux regression tracking (Thorsten Leemhuis) wrote:
> On 30.06.24 01:18, Mikhail Gavrilov wrote:
>> On Sat, Jun 29, 2024 at 9:46 PM Rodrigo Siqueira Jordao
>> <Rodrigo.Siqueira@....com> wrote:
>>>
>>> I'm trying to reproduce this issue, but until now, I've been unable to
>>> reproduce it. I tried some different scenarios with the following
>>> components:
>>>
>>> 1. Displays: I tried with one and two displays
>>>    - 4k@120 - DP && 4k@60 - HDMI
>>>    - 4k@244 Oled - DP
>>> 2. GPU: 7900XTX
>>
>> The issue only reproduced with RDNA2 (6900XT)
>> RDNA3 (7900XTX) is not affected.
> 
> Hmmm, again this looks stalled -- and the regression report is 6 weeks
> old by now. :-/ Or was a solution found in between?

I'm okay with reverting the patch, but I want to see the requested data 
and tests first. I could not reproduce this issue on my side, and others 
did not see it either. I suspect this is something related to firmware 
or it is a display-specific issue, that's why the data/test that I 
requested would be useful.

Thanks
Siqueira

> 
> So I assume no solution will be ready in time for the 6.10 final? I also
> assume a "simple" temporary revert is not a option or bears big risks?
> 
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> --
> Everything you wanna know about Linux kernel regression tracking:
> https://linux-regtracking.leemhuis.info/about/#tldr
> If I did something stupid, please tell me, as explained on that page.
> 
> #regzbot poke