At Tue, 07 Oct 2003 18:00:22 +0100, James Courtier-Dutton wrote: > > I have 2 sound cards, card 0 is the motherboard intel/alc650 one, and > card 1 is a SB Audigy2 > > Playing two streams at once on device "front:1" works: - > aplay -D front:1 filename.wav > aplay -D front:1 filename.wav > So, this is playing two files to the SB Audigy2 front speakers. > I can hear the two files being mixed together and output together to a > single set of speakers. > > Playing two streams at once on device "rear:1" fails: - > aplay -D rear:1 filename.wav > aplay -D rear:1 filename.wav > So, this is trying to play two files to the SB Audigy2 rear speakers. > > The first files comes out of the rear speakers, but the output from the > second aplay command fails with: - > > bash-2.05b# aplay -D rear:1 filename.wav > Playing WAVE 'filename.wav' : Signed 16 bit Little Endian, Rate 44100 > Hz, Stereo > ALSA lib setup.c:94:(snd_sctl_install) Cannot lock ctl elem > aplay: set_params:876: Unable to install hw params: > ACCESS: RW_INTERLEAVED > FORMAT: S16_LE > SUBFORMAT: STD > SAMPLE_BITS: 16 > FRAME_BITS: 32 > CHANNELS: 2 > RATE: 44100 > PERIOD_TIME: (125011 125012) > PERIOD_SIZE: 5513 > PERIOD_BYTES: 22052 > PERIODS: 2 > BUFFER_TIME: (250022 250023) > BUFFER_SIZE: 11026 > BUFFER_BYTES: 44104 > TICK_TIME: 1000 > > Can you explain why this might be happening?
this is because the "Wave Surround Playback Volume" control is locked by the first rear stream. you can find it in /usr/share/alsa/cards/Audigy2.conf. please try to remove the lock. Takashi ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
