Hi James,<br><br>Same thing here, I've tried any combination of settings I could imagine and I wasn't able to make it work. I also have MCP51 High Definition Audio, so this might be the clue...<br><br><div class="gmail_quote">
On Sun, Apr 27, 2008 at 8:02 PM, James Cummings <<a href="mailto:james%2Bmythtv@cummingsfamily.org.uk">james+mythtv@cummingsfamily.org.uk</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hiya,<br>
<br>
I've just upgraded my myth box to Ubuntu 8.04, and most things seem to<br>
be working ok (not yet tried everything...) however, something is<br>
wrong with the control of sound.<br>
<br>
When I am playing live tv or watching a recording, I cannot<br>
raise/lower the volume or mute.<br>
<br>
Now it isn't the remote control or lircd because when I press the keys<br>
the correct thing is displayed on the screen. I.e. when I press<br>
volume down multiple times, the volume bar comes on the screen and I<br>
can raise and lower it...it just has no actual effect on the volume.<br>
Same with mute, I get 'mute on' temporarily on the screen, but it<br>
doesn't mute it.<br>
<br>
So it seems like it is something to do with the audio settings, I've<br>
looked in general -> audio page and tried a few non-alsa settings as<br>
well as the default, /dev/dsp, etc. but nothing seems to work. (one<br>
setting did remove the ability to appear to be changing it at all).<br>
<br>
My mythtv specific audio settings are:<br>
<br>
Audio output device: ALSA:default (but tried all of them)<br>
Passthrough: default<br>
Max Audio Channels: Stereo<br>
Upmix: Passive<br>
x Use internal volume controls<br>
Mixer: ALSA:default (but tried /dev/mixer as well)<br>
Mixer Controls: Master (but tried PCM as well)<br>
<br>
<br>
The output of "alsamixer":<br>
<br>
alsamixer: function snd_mixer_load failed: No such file or directory<br>
<br>
and "lsmod |grep snd":<br>
<br>
~$ lsmod |grep snd<br>
snd_hda_intel 344728 0<br>
snd_pcm_oss 42144 0<br>
snd_mixer_oss 17920 1 snd_pcm_oss<br>
snd_pcm 78596 2 snd_hda_intel,snd_pcm_oss<br>
snd_page_alloc 11400 2 snd_hda_intel,snd_pcm<br>
snd_hwdep 10500 1 snd_hda_intel<br>
snd_seq_dummy 4868 0<br>
snd_seq_oss 35584 0<br>
snd_seq_midi 9376 0<br>
snd_rawmidi 25760 1 snd_seq_midi<br>
snd_seq_midi_event 8320 2 snd_seq_oss,snd_seq_midi<br>
snd_seq 54224 6<br>
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event<br>
snd_timer 24836 2 snd_pcm,snd_seq<br>
snd_seq_device 9612 5<br>
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq<br>
snd 56996 11<br>
snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_hwdep,snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device<br>
soundcore 8800 1 snd<br>
<br>
<br>
And "$ lspci |grep Audio" is:<br>
<br>
00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)<br>
<br>
and output of "$ aplay -l" is:<br>
**** List of PLAYBACK Hardware Devices ****<br>
card 0: NVidia [HDA NVidia], device 0: ALC861 Analog [ALC861 Analog]<br>
Subdevices: 1/1<br>
Subdevice #0: subdevice #0<br>
<br>
Just in case any of that helps.<br>
<br>
Any suggestions appreciated!<br>
<br>
-James<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Joan