volume knob on USB headphones misbehaves

[Gintautas Miliauskas]

I was suprised to find that the volume control knob on my USB headphones is actually handled by Ubuntu: a small overlay window appears in the centre of the screen and volume is changed. However, the problem is that the knob controls the volume setting of my internal soundcard rather than the external USB headphones.

In fact, when I just tried to reproduce this bug (I had noticed it earlier) I couldn't get the knob to work at all -- no overlay window would appear. This could be a regression in gnome-media, or just a quirk with my computer. If I can get it to work again, I'll let you know.

[Gintautas Miliauskas (gintas)]

I think the knob wasn't working because apparently I misconfigured some GNOME shortcuts. Now I see that the headset sends simple input events which probably look like multimedia keypresses on the keyboard. In that case it might not be easy to pinpoint the source of the keypress, however, the problem still remains.

 I think this could be related to the problem that the sound applet does not notice that the default audio device has changed. I think these are related:
http://bugzilla.gnome.org/show_bug.cgi?id=167606
http://bugzilla.gnome.org/show_bug.cgi?id=317899
http://bugzilla.gnome.org/show_bug.cgi?id=305907
http://bugzilla.gnome.org/show_bug.cgi?id=329112

[Sebastien Bacher (seb128)]

Thanks for the bug report. This particular bug has already been reported into our bug tracking system, but please feel free to report any further bugs you find.