Upgrade to Hardy, can't raise/lower/mute volume

James Cummings james+ubuntu at cummingsfamily.org.uk
Sun Apr 27 18:08:42 UTC 2008


I've just upgraded one of my machines to Ubuntu 8.04 and something
seems to be wrong with the sound.  Needless to say it was working fine
before, but now I get sound, but I'm unable to control it, i.e. I'm
unable to raise/lower or mute it.  I.e. if I open volume control and
try to lower the volume bars they just jump back up to the top.  This
is fairly important for this machine because it also acts as a mythtv

The output of "alsamixer":

alsamixer: function snd_mixer_load failed: No such file or directory

and "lsmod |grep snd":

~$ lsmod |grep snd
snd_hda_intel         344728  0
snd_pcm_oss            42144  0
snd_mixer_oss          17920  1 snd_pcm_oss
snd_pcm                78596  2 snd_hda_intel,snd_pcm_oss
snd_page_alloc         11400  2 snd_hda_intel,snd_pcm
snd_hwdep              10500  1 snd_hda_intel
snd_seq_dummy           4868  0
snd_seq_oss            35584  0
snd_seq_midi            9376  0
snd_rawmidi            25760  1 snd_seq_midi
snd_seq_midi_event      8320  2 snd_seq_oss,snd_seq_midi
snd_seq                54224  6
snd_timer              24836  2 snd_pcm,snd_seq
snd_seq_device          9612  5
snd                    56996  11
soundcore               8800  1 snd

And "$ lspci |grep Audio" is:

00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)

and output of  "$ aplay -l" is:
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC861 Analog [ALC861 Analog]
 Subdevices: 1/1
 Subdevice #0: subdevice #0

Just in case any of that helps.

Any suggestions appreciated!


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