I have a SystemPreferences.app applet for setting Volume in Pipewire. I've
only tested it on Linux so far. it Requires blocks support.

On Mon, 21 Jul 2025 at 18:59, Riccardo Mottola <[email protected]>
wrote:

> Hi,
>
> some more investigation. Trying to understand the conditions of
> /dev/mixer availability. I want to understand if it is device dependent,
> kernel version, kernel configuration or package dependent.
>
> Essentially, it is an OSS interface somehow a little customized for alsa.
>
> On my workstation Gentoo ~amd64 (equivalent to testing branch), I have
> /dev/mixer and 6.15.6-gentoo kernel which is definitely very recent!. I
> do not have alsa-oss package installed.
> Main volume works, setting of balance doesn't.
>
> On my laptop Devuan amd64 daedalus (should be debian bookworm?) with
> 6.1.0-37 kernel there is no /dev/mixer
>
> On my Raspberry PI3 with 4.9.35 (Rasbpian equivalent debian 8) there is
> no mixer either. But does it have audio at all? Never used it, just curios
>
> Furthermore, thinking of FreeBSD, there is /dev/mixer0 and /dev/mixer1.
> Of course no alsa lib, but it might be interesting to see if the current
> code can be easily made compatible or I do need a completely different
> Device backend.
>
> By googling around, fixes vary a lot. From using /dev/snd/mixer -
> doesn't exist for me or loading an oss kernel compatibility module. But
> right now got nothing consistent to work. If you do, tell me.
>
> Riccardo
>
>

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