[ATrpms-users] Mythtv mute again after 0.19-130.rhfc5 upgrade (now OK)

[John Pilkington]

> I posted this yesterday.  Part of the problem is now solved.
> The 'resource busy' was apparently caused by the new presence of the 
> KsCD ikon on the taskbar.  After removing that, the alsa test
> 
> /usr/bin/aplay /usr/share/sounds/KDE_Startup.wav
> 
> worked for root.

I'm glad to report that the sound problem appears to be solved.  It was 
unfortunate that I upgraded while in the middle of experiments with 
mythmusic - and the CD player - to try to replicate Paul's experience 
with sound unmuting and obtain a method that would work with currently 
available programs.  I'm back again to a sound system that needs a prior 
entry to 'radio', which is currently unsupported.

The system that works has Jarod's ~/.asoundcr, unmodified after download 
   from http://wilsonet.com/mythtv/asoundrc.txt, and the audio output 
device is specified in Mythfrontend setup as ALSA:default.  Jarod's file 
  sets this up to be 'unmixed digital' but simple editing can provide 
other options.  Then in KMix Output select Master and PCM. KMix Input 
has no green lights; red lights on Video and Capture.  The Video and 
Capture sliders don't affect the volume, at least in LiveTV.

But as user mythtv I get
> 
> ALSA lib pcm_dmix.c:836:(snd_pcm_dmix_open) unable to create IPC semaphore
> aplay: main:547: audio open error: Permission denied
> 
> - and I have yet to find out what permission I need to change.

References to this have gone away now - don't know why.

> 
> Hope this clears up some of the confusion.
> 
> John
> 
>> Starting the new version of mythtv immediately after a reboot, with 
>> ALSA:default selected and going to 'watch_tv', I get
>>
>> 2006-08-03 18:06:43.178 Opening audio device 'default'.
>> ALSA lib pcm_dmix.c:865:(snd_pcm_dmix_open) unable to open slave
>> 2006-08-03 18:06:43.351 snd_pcm_open(default): Device or resource busy
>> 2006-08-03 18:06:43.357 NVP: Disabling Audio, reason is:
>> snd_pcm_open(default): Device or resource busy
>>
>> Sound is available direct from the 'video' input to Kmix - not in
>> sync with the picture - but not through the 'capture' input.
>>
>> On a second entry to 'watch_tv' the tv window is black and the terminal
>> shows
>>
>> 2006-08-03 18:30:42.360 Opening audio device 'default'.
>> 2006-08-03 18:31:02.219 TV Error: StartPlayer(): NVP is not playing
>> after 20000 msec
>>
>> The tv window then fails to respond normally to 'close' commands, and a
>> reboot command hangs with a black screen (but active cursor) until
>> a second 'reboot'  is issued via (eg) the ctrl/alt/f6 terminal.
>>
>> mplayer has been giving similar trouble, reporting on exit an 
>> interruption in module ao2_init.  It has just played one file after a 
>> reboot, but hung on second entry.
>>
>> Any ideas, please?  I have tried reinstalling v4l etc but the behaviour 
>> was much the same; I've also deactivated selinux and sshd during the 
>> tests and the system logs look cleaner afterwards.
>>
>> John