No. What I want is sharing hardware - the sound card among several
users - i.e. I have several users logged in on a host. some of them use
the card - some play music, or keep it paused currently while another
tries to work w/ MIDI editor - like RoseGarden or LMMS.
you should use dmix with the 'ipc_key_add_uid' parameter set to false to let multiple users share the same device.
Currently I do not use sharing of sound card that results in lockups -
app.s either waiting for hardware to be released or hang up my whole
system - I tried to run ardour2 while mplayer2 was playing a FLAC. -
Had to reset whole OS.
that sounds really weird... you should use jack sound server and configure every user .asoundrc properly, furthermore have a look at your /etc/group and add your user to the audio group, then you can use /etc/security/limits.conf or /etc/security/limits.d/audio.conf to "boost" audio performances for audio group members
-r