I was using 9 channels, in the posted test-run, because I was getting weird errors and out-of-orderings (so I'd been trying random numbering to see what I could get to work). Here is what happens when I run with 8ch instead of 9ch right now:
j@j-P180HMx:/usr/share/sounds/speech-dispatcher$ speaker-test -c 8 -l 1 -Ddefault speaker-test 1.0.25 Playback device is default Stream parameters are 48000Hz, S16_LE, 8 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 24 to 262144 Period size range from 8 to 87382 Using max buffer size 262144 Periods = 4 was set period_size = 65536 was set buffer_size = 262144 0 - Front Left [loud] 4 - Center [loud] 1 - Front Right [loud] 7 - Side Right [quiet_but_audible] 3 - Rear Right [quiet_but_audible] 2 - Rear Left [quiet_but_audible] 6 - Side Left [quiet_but_audible] 5 - LFE [silent] Time per period = 25.117010 So, similar to what happens when I test 9ch, but with the numbering a bit odd. Is it supposed to be out-of-order like that? Here is what happens when I run the commands you specified -- note that specifying another device-name *can* work. $ speaker-test -c2 -t wav -Dhw:0,0 speaker-test 1.0.25 Playback device is hw:0,0 Stream parameters are 48000Hz, S16_LE, 2 channels WAV file(s) Rate set to 48000Hz (requested 48000Hz) Buffer size range from 64 to 16384 Period size range from 32 to 8192 Using max buffer size 16384 Periods = 4 was set period_size = 4096 was set buffer_size = 16384 0 - Front Left [works] 1 - Front Right [works] Time per period = 2.731724 ^C $ speaker-test -c4 -t wav -Dhw:0,0 speaker-test 1.0.25 Playback device is hw:0,0 Stream parameters are 48000Hz, S16_LE, 4 channels WAV file(s) Channels count (4) not available for playbacks: Invalid argument Setting of hwparams failed: Invalid argument j@j-P180HMx:~$ speaker-test -c6 -t wav -Dhw:0,0 speaker-test 1.0.25 Playback device is hw:0,0 Stream parameters are 48000Hz, S16_LE, 6 channels WAV file(s) Channels count (6) not available for playbacks: Invalid argument Setting of hwparams failed: Invalid argument j@j-P180HMx:~$ speaker-test -c8 -t wav -Dhw:0,0 speaker-test 1.0.25 Playback device is hw:0,0 Stream parameters are 48000Hz, S16_LE, 8 channels WAV file(s) Channels count (8) not available for playbacks: Invalid argument Setting of hwparams failed: Invalid argument -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1236965 Title: pulseaudio does not recognize internal speakers [P180HMx, Realtek ALC892, Speaker, Internal] volume slider problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1236965/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs