On Sat, 2015-04-18 at 10:13 +0800, Raymond Yau wrote: > > > > This is pretty much a complete rewrite of the patches that intended > to > > fix bad volume behaviour on Terratec Aureon Dual USB. These patches > > add a new default volume attribute to ports and alsa-mixer paths, > and > > use that to fix the Aureon volume bug[1]. > > > > The default volume of all analog paths, not just Aureon, is now 30% > > instead of 100%. Also, the port default volume is now considered > when > > switching ports. That means, for example, that on the first boot of > > a laptop with speakers and a headphone jack (unplugged), the > speakers > > get their default volume set as before (based on the hardware > volume), > > but when plugging in headphones, the sink volume jumps to 30%. > That's > > a good thing, because the speaker volume won't affect the default > > headphone volume like it has affected so far. > > > > Here's a link to the v1 patch set discussion, where the device > default > > volumes were discussed in some length: > > http://thread.gmane.org/gmane.comp.audio.pulseaudio.general/22253 > > > > [1] https://bugs.freedesktop.org/show_bug.cgi?id=81777 > > > Is this bug of alsa mixer api ? I don't know. My guess would be no. > The speaker playback switch is mono but speaker playback volume is > stereo > > amixer even show two on/off switches Even if the mismatch is a bug, fixing it most likely wouldn't fix the real problem of the volume having effect only in the analog mode. -- Tanu
