Re: Fwd: [Bug 217440] New: ALC236 audio disappears from HP 15z-fc000 on warm boot

[Bagas Sanjaya <bagasdotme@gmail.com>]

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On Sat, May 13, 2023 at 03:52:53PM -0400, Joseph C. Sible wrote:
> On an HP 15z-fc000 laptop that uses Realtek ALC236 for sound, once the system
> is warm booted ("reboot" from within Linux), sound stops working completely and
> the device doesn't even show up anymore. Once this happens, the only way to get
> it to come back is to cold boot ("poweroff" from within Linux, wait for it to
> turn completely off, and turn it back on with the physical power button). In
> particular, once you boot from a "bad" kernel, no number of warm boots with
> "good" kernels will ever bring sound back.

Can you attach dmesg messages so that we can know what exactly the error
is?

> 
> I bisected this to commit 5aec989, which first appeared in 5.15-rc6. In
> addition, I confirmed by doing a custom build of 6.3.2 with reverts of both
> f30741c (just to avoid a conflict) and 5aec989, which works correctly for me.

Note: when you refer commits, write at least 12 first characters of the
commit's hash. You may want to set `core.abbrev=12` in your
`~/.gitconfig`. Also the canonical commit reference is
`--pretty=format:%h (\"%s\")`.

And remember: when replying, don't top-post; reply inline with
appropriate context instead.

Anyway, I'm fixing up the title:

#regzbot title: Realtek ALC236 unrecognized on reboot

Thanks.

-- 
An old man doll... just what I always wanted! - Clara

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