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SubjectRe: Regression: very quiet speakers on Thinkpad T570s
On 11/30/18 11:00 AM, Takashi Iwai wrote:
> On Fri, 30 Nov 2018 15:49:17 +0100,
> Jeremy Cline wrote:
>> Hi,
>> Some folks have reported on the Fedora bug tracker[0] that the laptop
>> speaker volume is very low on the Thinkpad T570 when running a kernel
>> that includes commit 61fcf8ece9b6 ("ALSA: hda/realtek - Enable Thinkpad
>> Dock device for ALC298 platform").
>> from v4.15.4 (just before commit 61fcf8ece9b6 arrived in
>> stable) and v4.19.4 with the issue present are attached to the bugzilla.
>> I've also Cc'd Tim, who uploaded them and has the laptop in question.
>> [0]
> Could you pinpoint which kernel version started showing the
> regression, at least? The diffs are fairly wide between 4.15 and
> 4.19.

Ah, sorry for not being more clear. The regression appears to be
introduced by commit 61fcf8ece9b6, which got backported to v4.15.5
because it addressed a bug with the dock[0]. v4.19.4 with that commit
reverted works, according to the bug reporter.



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