[pulseaudio-discuss] [PATCH 4/4] alsa-mixer: Add force-hw-volume flag to alsa profile sets

Jyri Sarha jyri.sarha at iki.fi
Mon Apr 11 02:19:18 PDT 2011

On Sat, 09 Apr 2011 20:20:40 +0200, David Henningsson
<david.henningsson at canonical.com> wrote:
> On 2011-04-08 17:18, Colin Guthrie wrote:
>> 'Twas brillig, and oku at iki.fi at 08/04/11 15:18 did gyre and gimble:
>>> From: Jyri Sarha<jyri.sarha at nokia.com>
>>> Before this patch, if any of the paths in a path set do not
>>> support HW volume then the HW volume is disabled for the whole
>>> set. In some cases this is a bit drastic measure. For instance,
>>> if all but one of the paths support HW volume and dB there no
>>> problem to pretend that we have HW volume for the whole set. The
>>> path without any mixers to control will just always return 0 dB
>>> and the rest is handled by SW volume. This patch adds a flag to
>>> the mapping section of profile set file to enables this behavior.
>> David, this sounds similar to your USB Headset issue from a couple days
>> ago... or am I just reading too much into the description?
> Sort of - it just feels like neither of us has tried to do the right 
> thing so far - I added a workaround/quirk for a few devices, and this 
> patch adds a setting to turn something on and off.
> I'd like it to "just work".
> Or put in another way - what's the recommended default setting of this 
> new parameter, and why?

Target for my patch was to be non intrusive, but if you agree I can easily

change my patch to always behave like force-hw-volume flag was set to true
and remove the flag. It is even easier just to change the default for the 


More information about the pulseaudio-discuss mailing list