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SubjectRe: Regression in v5.19-rc4 Sound Distortion
From
horsten Leemhuis wrote:
> On 12.07.22 18:35, Dmitry Osipenko wrote:
>> On 7/12/22 19:02, Daniel Exner wrote:
>>
>>> Since  v5.19-rc4 this box got some *loud* distorting sound on boot and
>>> after some time without any sound if something plays sound again from
>>> the integrated speakers in my monitor.
>>>
>>> I managed to bisect this down to:
>>>
>>>> commit 202773260023b56e868d09d13d3a417028f1ff5b
>>>> Author: Dmitry Osipenko <dmitry.osipenko@collabora.com>
>>>> Date:   Fri Jun 17 15:24:02 2022 +0300
>>>>
>>>>    PM: hibernate: Use kernel_can_power_off()
>>> Reverting that commit on top of v5.19-rc6 does indeed fix the problem here.
>> You're saying that the problem is on boot, but this patch is about
>> suspension to disk, which has nothing to do neither with the boot nor
>> with power-off. I'm afraid your bisection is incorrect.
> After quickly looking at the code this looks appropriate, but why does
> reverting that commit help then? That's a bit odd. Daniel: are you maybe
> using suspend-to-disk and forgot to mention it?

No, I am not. But it seems Dmitry was right, at some point I bisected
wrong by declaring some point good too early because I didn't have the
bug on boot.

Perhaps I have two effects here: some bug resulting in sound distortion
and some bug triggering that faster.


I will redo the bisection, but I fear it will take some time.


Greetings

Daniel

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