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 <rupat@xxxxxxxx> 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 ! > > ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
