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From: Felix Richter <>
To: Alex Deucher <>,
	"Mahfooz, Hamza" <>
Cc: Linux regressions mailing list <>,,
Subject: Re: PROBLEM: AMD Ryzen 9 7950X iGPU - Blinking Issue
Date: Wed, 7 Jun 2023 10:42:45 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Hi Guys,

so I checked, the kernel I am running has this commit 
/commit/?id=08da182175db4c7f80850354849d95f2670e8cd9) applied already!

And the bug of display flickering persists with or without the 
amdgpu.sg_display=0 variable applied!

Kind regards,
Felix Richter

On 6/5/23 16:11, Alex Deucher wrote:
> + Hamza
> This is a known issue.  You can workaround it by setting
> amdgpu.sg_display=0.  It should be issue should be fixed in:
> Alex
>> Now if this is the desired long term fix I do not know …
>> Kind regards,
>> Felix Richter
>> On 02.05.23 16:12, Linux regression tracking (Thorsten Leemhuis) wrote:
>>> On 02.05.23 15:48, Felix Richter wrote:
>>>> On 5/2/23 15:34, Linux regression tracking (Thorsten Leemhuis) wrote:
>>>>> On 02.05.23 15:13, Alex Deucher wrote:
>>>>>> On Tue, May 2, 2023 at 7:45 AM Linux regression tracking (Thorsten
>>>>>> Leemhuis)<>  wrote:
>>>>>>> On 30.04.23 13:44, Felix Richter wrote:
>>>>>>>> Hi,
>>>>>>>> I am running into an issue with the integrated GPU of the Ryzen 9
>>>>>>>> 7950X. It seems to be a regression from kernel version 6.1 to 6.2.
>>>>>>>> The bug materializes in from of my monitor blinking, meaning it
>>>>>>>> turns full white shortly. This happens very often so that the
>>>>>>>> system becomes unpleasant to use.
>>>>>>>> I am running the Archlinux Kernel:
>>>>>>>> The Issue happens on the bleeding edge kernel: 6.2.13
>>>>>>>> Switching back to the LTS kernel resolves the issue: 6.1.26
>>>>>>>> I have two monitors attached to the system. One 42 inch 4k Display
>>>>>>>> and a 24 inch 1080p Display and am running sway as my desktop.
>>>>>>>> Let me know if there is more information I could provide to help
>>>>>>>> narrow down the issue.
>>>>>>> Thanks for the report. To be sure the issue doesn't fall through the
>>>>>>> cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression
>>>>>>> tracking bot:
>>>>>>> #regzbot ^introduced v6.1..v6.2
>>>>>>> #regzbot title drm: amdgpu: system becomes unpleasant to use after
>>>>>>> monitor starts blinking and turns full white
>>>>>>> #regzbot ignore-activity
>>>>>>> This isn't a regression? This issue or a fix for it are already
>>>>>>> discussed somewhere else? It was fixed already? You want to clarify
>>>>>>> when
>>>>>>> the regression started to happen? Or point out I got the title or
>>>>>>> something else totally wrong? Then just reply and tell me -- ideally
>>>>>>> while also telling regzbot about it, as explained by the page listed in
>>>>>>> the footer of this mail.
>>>>>>> Developers: When fixing the issue, remember to add 'Link:' tags
>>>>>>> pointing
>>>>>>> to the report (the parent of this mail). See page linked in footer for
>>>>>>> details.
>>>>>> This sounds exactly like the issue that was fixed in this patch which
>>>>>> is already on it's way to Linus:
>>>>> FWIW, you in the flood of emails likely missed that this is the same
>>>>> thread where you yesterday replied "If the module parameter didn't help
>>>>> then perhaps you are seeing some other issue.  Can you bisect?". That's
>>>>> why I decided to add this to the tracking. Or am I missing something
>>>>> obvious here?
>>>>> /me looks around again and can't see anything, but that doesn't have to
>>>>> mean anything...
>>>>> Felix, btw, this guide might help you with the bisection, even if it's
>>>>> just for kernel compilation:
>>>>> And to indirectly reply to your mail from yesterday[1]. You might want
>>>>> to ignore the arch linux kernel git repo and just do a bisection between
>>>>> 6.1 and the latest 6.2.y kernel using upstream repos; and if I were you
>>>>> I'd also try 6.3 or even mainline before that, in case the issue was
>>>>> fixed already.
>>>>> [1]
>>>> Thanks for the pointers, I'll do a bisection on my desktop from 6.1 to
>>>> the newest commit.
>>> FWIW, I wonder what you actually mean with "newest commit" here: a
>>> bisection between 6.1 and mainline HEAD might be a waste of time, *if*
>>> this is something that only happens in 6.2.y (say due to a broken or
>>> incomplete backport)
>>>> That was the part I was mostly unsure about … where
>>>> to start from.
>>>> I was planning to use PKGBUILD scripts from arch to achieve the same
>>>> configuration as I would when installing
>>>> the package and just rewrite the script to use a local copy of the
>>>> source code instead of the repository.
>>>> That way I can just use the bisect command, rebuild the package and test
>>>> again.
>>> In my experience trying to deal with Linux distro's package managers
>>> creates more trouble than it's worth.
>>>> But I probably won't be able to finish it this week, since I am on
>>>> vacation starting tomorrow and will not have access to the computer in
>>>> question. I will be back next week, by that time the patch Alex is
>>>> talking about might
>>>> already be in mainline. So if that fixes it, I will notice and let you
>>>> know. If not I will do the bisection to figure out what the actual issue
>>>> is.
>>> Enjoy your vacation!
>>> Ciao, Thorsten

  parent reply	other threads:[~2023-06-07  8:42 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <>
2023-05-02 11:44 ` PROBLEM: AMD Ryzen 9 7950X iGPU - Blinking Issue Linux regression tracking (Thorsten Leemhuis)
2023-05-02 13:13   ` Alex Deucher
2023-05-02 13:34     ` Linux regression tracking (Thorsten Leemhuis)
2023-05-02 13:39       ` Alex Deucher
2023-05-02 13:48       ` Felix Richter
2023-05-02 14:12         ` Linux regression tracking (Thorsten Leemhuis)
2023-06-03 14:52           ` Felix Richter
2023-06-05 14:11             ` Alex Deucher
2023-06-05 19:01               ` Felix Richter
2023-06-07  8:42               ` Felix Richter [this message]
2023-06-07 18:05                 ` Alex Deucher
2023-06-05 15:27             ` Hamza Mahfooz
2023-06-05 18:55               ` Felix Richter

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