On Wed, 31.10.07 22:30, Ira Snyder (devel at irasnyder.com) wrote: > Hello all. I'm having trouble with 5.1 sound and pulseaudio. > > I'm using gentoo ~x86, and PA 0.9.7. I have an Audigy2 ZS soundcard, which uses the emu10k1 driver in ALSA. > > I had 5.1 sound working in PA 0.9.6 with the following line in my /etc/pulse/default.pa file: > load-module module-alsa-sink device=surround51 channels=6 > > Now, with PA 0.9.7, it doesn't recognize the device at all. It gives me the following error message: > ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL > surround51 This is no error. Only a warning that no matching mixer for your PCM could be identified and PA thus reverted to software volume control. Please provide me with the full output of pulseaudio -vv. > However, 6 channel sound with plain ALSA is working, as it has been > for a long time. I confirmed this by running "speaker-test > -Dsurround51 -c6 -l1 -twav" which works wonderfully. I can also use > "-Dplug:surround51" and it gives me the same, working 5.1 sound. > > So, my question is: why can't pulseaudio open the "surround51" > device? surround51:0 is the device you should be opening. And PA should be able to do just that. EMU10K is somehwat strange as it seems. It combines several synchronized stereo outputs into a single surround output. To make that work ALSA uses the userspace "multi" ALSA plugin, which apparently has some issues. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4
