Re: [PATCH 0/2] Fix beep notifications by Thinkpad's ACPI firmware

[Takashi Iwai <tiwai@suse.de>]

On Wed, 20 Nov 2024 02:29:59 +0100,
Jarosław Janik wrote:
> 
> On 19.11.2024 16:21, Takashi Iwai wrote:
> > I'm not sure whether I already asked it: did you try to turn on/off
> > "Beep Playback Switch" (i.e. mute/unute "Beep" mixer element)?
> > It should control the digital beep of HD-audio's own beep input
> > device, but this might be also related with the internal beep from the
> > Lenovo firmware (and the output of pcspkr input device).
> 
> Both "Beep" mixer and mute switch don't affect beeps generated by ACPI
> firmware (and pcspkr module for that matter)
> 
> > And, judging from the fact that "Master" volume influences on the beep
> > sound, it also means that the sound is routed to DACs -- for Conexant
> > codecs, Master is a virtual control just changes both Speaker and
> > Headphone volumes/switches, and both Speaker and Headphone controls
> > are tied with the Audio Output widgets.  You can check whether the
> > beep tone volume from pcspkr or Thinkpad ACPI is also controlled via
> > Speaker and Headphone mixer volume and switch.
> 
> The volume of beeps from firmware and pcspkr is fixed, it's not changed
> by any available mixer setting; the only thing that affects those beeps
> is Master Mute Switch, which mutes them both on the speakers and on the
> headphones.
>
> And one more thing - both beep types are audible on the headphones even
> if Headphones mixer is set minimum and Headphones Mute Switch is set to
> mute (if Master is unmuted, obviously)

Hm, that's odd.  At this moment, do you hear from the speaker?  Or
Speaker Playback Switch is off?


Takashi