'Twas brillig, and Julian Sikorski at 22/06/11 18:13 did gyre and gimble: > W dniu 22.06.2011 15:54, Colin Guthrie pisze: >> So something is wrong at the alsa level. You may be able to play back >> 5.1 sound but there are no controls to back that up. >> >> You should try something like e.g. >> >> [colin at jimmy ~]$ pasuspender bash >> [colin at jimmy ~]$ speaker-test -D surround51:0 >> >> speaker-test 1.0.24.2 >> >> Playback device is surround51:0 >> Stream parameters are 48000Hz, S16_LE, 1 channels >> Using 16 octaves of pink noise >> Channels count (1) not available for playbacks: Invalid argument >> Setting of hwparams failed: Invalid argument >> [colin at jimmy ~]$ exit >> >> >> I expect you'll get a similar failure I get there. If it works correctly >> and you hear things from each speaker separately then I'd be surprised. > > I got the same failure: > > [julas at snowball2 ~]$ speaker-test -D surround51:0 > > speaker-test 1.0.24.1 > > Playback device is surround51:0 > Stream parameters are 48000Hz, S16_LE, 1 channels > Using 16 octaves of pink noise > Channels count (1) not available for playbacks: Z?y argument > Setting of hwparams failed: Z?y argument > >> But if it does fail, then it could simply be a matter that the incorrect >> model was detected for your HDA driver. >> >> http://www.kernel.org/doc/Documentation/sound/alsa/HD-Audio-Models.txt > > I have looked there before, but there are no models listed for ALC892. > It might be the case that the hardware is just too new - this laptop > model came out in January. > I guess I should take this to alsa developers then, do you know which is > the best way to get their attention? Bugzilla? ML? Definitely the alsa-devel mailing list. Their bug tracker is just a black hole :s It's generally quite a responsive list. It could be support is already there in the devel code tree... fingers crossed :D 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/]