'Twas brillig, and Robert Orzanna at 20/10/11 07:05 did gyre and gimble: > I don't see any way how to adjust PCM which by default is set to 100 > by pulseaudio. Hence, I must use alsamixer to reduce the distortions > caused by the high PCM. Oops, I didn't see this bit before due to HTML formatting :( (please try to use plain text if you can). This is a bug in ALSA. If high PCM values result in distortions then ALSA is either misreporting the dB values for the PCM channel or something else is going on. It is correct that PA uses PCM in it's mixer pipeline and this will not be changed. Any bugs need to be fixed properly where they occur, not papered over. You should report this via alsa-devel list. You can tell PA not to use PCM mixer but it requires that you load alsa module-alsa-sink manually and pass in the control= param (see the modules page on the wiki) which can get in the way of hotplug (you'd have to set your card to an input only profile so that you can load the sink manually in default.pa to ensure hotplug still worked). Hope that helps Col -- Colin Guthrie gmane(at)colin.guthr.ie http://colin.guthr.ie/ Day Job: Tribalogic Limited http://www.tribalogic.net/ Open Source: Mageia Contributor http://www.mageia.org/ PulseAudio Hacker http://www.pulseaudio.org/ Trac Hacker http://trac.edgewall.org/
