I've also tested two audio devices with alsa-1.0.17 on Ubuntu 8.10, still can't play sound on two devices concurrently. I can play sound on each device at a time, but don't work on both at the same time. Jason On Mon, 2008-10-20 at 12:01 -0600, Jason Kim wrote: > Hi All, > > OS: 8.04 > Advanced Linux Sound Architecture Driver Version 1.0.16 > Compiled on Apr 21 2008 for kernel 2.6.24-16-generic (SMP) > > I have two USB audio device as follow: > 0 [default_1 ]: USB-Audio - C-Media USB Headphone Set > C-Media USB Headphone Set at > usb-0000:00:11.3-2.2, full speed > 1 [default ]: USB-Audio - C-Media USB Headphone Set > C-Media USB Headphone Set at > usb-0000:00:11.3-1.2, full speed > 2 [UART ]: MPU-401 UART - MPU-401 UART > MPU-401 UART at 0x330, irq 10 > > The problem I have is I can't play two audio devices at the same time. > > Sound works if I run following commands on each device at a time: > > $ speaker-test -Dplughw:0 -t wav (works) > > then > > $ speaker-test -Dplughw:1 -t wav (works) > > > But, if I run this commands at the same time from two terminal programs, > I got following error on second command: > > root@test1-desktop:~# speaker-test -Dplughw:1 -t wav > > speaker-test 1.0.15 > > Playback device is plughw:1 > Stream parameters are 48000Hz, S16_LE, 1 channels > WAV file(s) > Rate set to 48000Hz (requested 48000Hz) > Buffer size range from 96 to 262144 > Period size range from 48 to 131072 > Using max buffer size 262144 > Periods = 4 > was set period_size = 65536 > was set buffer_size = 262144 > Unable to set hw params for playback: Broken pipe > Setting of hwparams failed: Broken pipe > > > It always fails on second command. > > Is it known problem? Anyone knows how to fix this? > > Jason > > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
