[mythtv-users] Lost sound on EPIA SP -- how to diagnose?

Ole Sandum mythtv at sandum.net
Mon Jan 16 23:52:26 UTC 2006


Paul Bender wrote:

>Ole Sandum wrote:
>  
>
>>Hello everybody,
>>
>>It seems everyone else's problems here are far more exotic, but I am out
>>of things to try and going desperate. So here goes:
>>
>>Just to try it out, I built a pilot FE/BE combo with FC4 on a VIA EPIA
>>SP8000 a couple of months ago. It was running nicely, but was begging
>>for faster hardware and more storage. So over christmas, I got myself a
>>nice Athlon 64-based box full of slots and drives to put the BE on. Hit
>>a couple of bumps on the way, but has it running nicely now using the
>>pure 64-bit packages from "atrpms-testing", mythfilling program guides
>>and recording everything in sight. Sweet. Thank you Axel, thank you
>>Jarod, and thank you everone else contributing.
>>
>>Now to the problem: somewhere along the way I lost the sound on the EPIA
>>and I can't get it back. It's just plain analog stereo out to the TV
>>set, so nothing fancy, but I don't know how to diagnose it. I've tried
>>un-/reinstall the alsa-{drivers,lib,utils} packages, skimming log files
>>for messages, but everything seems normal. Except the output remains
>>silent. I suppose this happened as a result of updating packages, but
>>since the original installaion was done months ago, I don't have a
>>precise recollection of what was installed/updated when.
>>
>>So please, any hints for places to look, stuff to read, or things to try
>>out will be most welcome.
>>
>>tia
>>
>>regards,
>>/Ole
>>    
>>
>
>Are the "PCM", "Master" and "VIA DXS" mixer settings set to non-zero 
>values? When I updated from ALSA 1.0.9 to 1.0.10, I found that I had to 
>explicitly set the "VIA DXS" mixer settings to a non-zero value.
>  
>
I think the already are. Output from "amixer contents" is thus: (long 
post, sorry)

numid=11,iface=MIXER,name='Master Mono Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=12,iface=MIXER,name='Master Mono Playback Volume'
  ; type=INTEGER,access=rw---,values=1,min=0,max=31,step=0
  : values=28
numid=1,iface=MIXER,name='Master Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=2,iface=MIXER,name='Master Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=22,22
numid=9,iface=MIXER,name='Headphone Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=10,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=28,28
numid=34,iface=MIXER,name='3D Control - Center'
  ; type=INTEGER,access=rw---,values=1,min=0,max=15,step=0
  : values=0
numid=35,iface=MIXER,name='3D Control - Depth'
  ; type=INTEGER,access=rw---,values=1,min=0,max=15,step=0
  : values=0
numid=31,iface=MIXER,name='3D Control - Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=26,iface=MIXER,name='PCM Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=27,iface=MIXER,name='PCM Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=25,25
numid=7,iface=MIXER,name='Surround Playback Switch'
  ; type=BOOLEAN,access=rw---,values=2
  : values=off,off
numid=8,iface=MIXER,name='Surround Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=0,0
numid=3,iface=MIXER,name='Center Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=4,iface=MIXER,name='Center Playback Volume'
  ; type=INTEGER,access=rw---,values=1,min=0,max=31,step=0
  : values=31
numid=5,iface=MIXER,name='LFE Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=6,iface=MIXER,name='LFE Playback Volume'
  ; type=INTEGER,access=rw---,values=1,min=0,max=31,step=0
  : values=0
numid=20,iface=MIXER,name='Line Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=21,iface=MIXER,name='Line Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=27,27
numid=22,iface=MIXER,name='CD Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=23,iface=MIXER,name='CD Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=27,27
numid=19,iface=MIXER,name='Mic Boost (+20dB)'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=33,iface=MIXER,name='Mic Select'
  ; type=ENUMERATED,access=rw---,values=1,items=2
  ; Item #0 'Mic1'
  ; Item #1 'Mic2'
  : values=0
numid=17,iface=MIXER,name='Mic Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=18,iface=MIXER,name='Mic Playback Volume'
  ; type=INTEGER,access=rw---,values=1,min=0,max=31,step=0
  : values=0
numid=15,iface=MIXER,name='Phone Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=16,iface=MIXER,name='Phone Playback Volume'
  ; type=INTEGER,access=rw---,values=1,min=0,max=31,step=0
  : values=0
numid=13,iface=MIXER,name='PC Speaker Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=14,iface=MIXER,name='PC Speaker Playback Volume'
  ; type=INTEGER,access=rw---,values=1,min=0,max=15,step=0
  : values=0
numid=24,iface=MIXER,name='Aux Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=25,iface=MIXER,name='Aux Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=0,0
numid=32,iface=MIXER,name='Mono Output Select'
  ; type=ENUMERATED,access=rw---,values=1,items=2
  ; Item #0 'Mix'
  ; Item #1 'Mic'
  : values=0
numid=28,iface=MIXER,name='Capture Source'
  ; type=ENUMERATED,access=rw---,values=2,items=8
  ; Item #0 'Mic'
  ; Item #1 'CD'
  ; Item #2 'Video'
  ; Item #3 'Aux'
  ; Item #4 'Line'
  ; Item #5 'Mix'
  ; Item #6 'Mix Mono'
  ; Item #7 'Phone'
  : values=1,0
numid=29,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=30,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=15,step=0
  : values=0,0
numid=36,iface=MIXER,name='IEC958 Playback Con Mask'
  ; type=IEC958,access=r----,values=1
  : values=?
numid=37,iface=MIXER,name='IEC958 Playback Pro Mask'
  ; type=IEC958,access=r----,values=1
  : values=?
numid=40,iface=MIXER,name='IEC958 Playback AC97-SPSA'
  ; type=INTEGER,access=rw---,values=1,min=0,max=3,step=0
  : values=3
numid=38,iface=MIXER,name='IEC958 Playback Default'
  ; type=IEC958,access=rw---,values=1
  : values=?
numid=39,iface=MIXER,name='IEC958 Playback Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=44,iface=MIXER,name='IEC958 Output Switch'
  ; type=BOOLEAN,access=rw---,values=1
  : values=off
numid=41,iface=MIXER,name='External Amplifier'
  ; type=BOOLEAN,access=rw---,values=1
  : values=on
numid=42,iface=MIXER,name='Input Source Select'
  ; type=ENUMERATED,access=rw---,values=1,items=2
  ; Item #0 'Input1'
  ; Item #1 'Input2'
  : values=0
numid=43,iface=MIXER,name='Input Source Select',index=1
  ; type=ENUMERATED,access=rw---,values=1,items=2
  ; Item #0 'Input1'
  ; Item #1 'Input2'
  : values=0
numid=45,iface=MIXER,name='VIA DXS Playback Volume'
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=31,31
numid=46,iface=MIXER,name='VIA DXS Playback Volume',index=1
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=31,31
numid=47,iface=MIXER,name='VIA DXS Playback Volume',index=2
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=31,31
numid=48,iface=MIXER,name='VIA DXS Playback Volume',index=3
  ; type=INTEGER,access=rw---,values=2,min=0,max=31,step=0
  : values=31,31

I realize this is specific to alsa and the sound setup more than to 
MythTV, because I am unable to produce sound in other apps as well. 
MythTV is just happens to be the one I need.

regards,
/Ole


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