Thanks for looking at this. I've spent two days without getting any where and I've run out of ideas.
I've checked permission and that users are members of audio group # ls -ls /dev/dsp 0 crw-rw---- 1 root audio 14, 3 2007-01-29 09:16 /dev/dsp # ls -ls /dev/mixer 0 crw-rw---- 1 root audio 14, 0 2007-01-29 09:16 /dev/mixer # cat /etc/group |grep audio audio:x:29:patrick,mythtv And I've passed the following flags at boot, without any improvement (although nosmp had a pretty negative effect!) noacpi nolapic nosmp noirqdebug pci=conf1 I've also tried this, although I'm not sure what the error tells me. #aplay -D hw:0,0 /downloads/english.au ALSA lib confmisc.c:1283:(snd_func_refer) Unable to find definition 'defaults.namehint.extended' ALSA lib conf.c:3500:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:3972:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM hw:0,0 aplay: main:545: audio open error: No such file or directory ** Attachment added: "dmesg output" http://librarian.launchpad.net/5915553/dmesg.txt -- Sound doesn't work on A8V-MX (VIA8233) https://launchpad.net/bugs/82021 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs