Hello Robert,
take a look into the /proc/asound folder, there you find alsa status
informations. For example if I do a 'cat' on my PC on the file
/proc/asound/card0/pcm0p/sub0/hw_params
it returns closed if no sound is running and information about
samplerate and so on if sound is running.
Greets,
Torsten
On Fri, 23 Mar 2012 09:07:02 +0100
Robert Bude ru...@rupat.de wrote:
hi everybody,
at home i have a mythbuntu media pc. it will shutdown
if no tv recording is sheduled and no user programs like mediaplayers
webbrowsers and so on open. this works with an preshutdown script
which simply checks if one of the programs i define is still active.
this works very good. the only problem is that sometimes i forgott to
close vlc player or some other programs.
so i have a new good idea to safe
power consumption ;) my new plan is to monitor if the pc outputs
sound. if this pc gives no music or tv sound it is on for nothing !
the best way i think is to monitor the output of soundcard or device
if there is activity at the last 15 minutes. if not shutdown.
But how i can detect
this ?
Any hints or new directions are very welcome
ps: i had a idea
to detect when als is going in power safe mode, but this only works if
outputs set to mute. so this is no alternative.
Greetings from Robert
from Cottbus, Germany !
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