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SubjectRe: [PATCH 1/4] ALSA: hda/realtek: fix mute/micmute LEDs for HP 855 G8
On Sat, 15 Jan 2022 16:22:15 +0100,
Alexander Sergeyev wrote:
>
> On Sat, Jan 15, 2022 at 08:55:28AM +0100, Takashi Iwai wrote:
> > > This patch solved the BUG problem. But after unbind/bind micmute LED
> > > stopped working. Speakers and mute LED are fine though.
> > Does the corresponding sysfs entry exist in /sys/class/leds/*?
>
> Yes.
>
> > And can you control LED over there?
>
> After "out of range cmd" messages the sysfs entry remains present, but writing
> ones to the brightness file stops to produce any effect.
>
> Actually, the timing issues are present here as well. Sometimes unbind & bind
> works fine. But fails on the second round.

Here "fails" means the kernel Oops / crash? If yes, the back trace
would be helpful.


thanks,

Takashi

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