Hello, we are trying to use a micronas usb chipset with alsa in debian stable it works ok with pcm default. (record and listen perfectly), but when we try to use it with some dsnoop/dmix plugin, the application segfault. the product is here : http://www.mbquart.de/en/produkte/pro/headsets/produkt.php?nr=mbk_c_800_usb# it is : Bus 002 Device 002: ID 074d:3554 Micronas GmbH for exemple : arecord toto.wav -> ok arecord --buffer-size=2 --period-size=256 --rate=44100 toto.wav -> ok arecord -r 48000 -f S16_LE toto.wav -> ok arecord -Dplug:mixin toto.wav -> segfault arecord -Dplug:swmixer toto.wav -> segfault with in asound.conf pcm.swmixer { type dmix ipc_key 1234 slowptr yes slave { pcm "hw:0,0" # period_time 0 # period_size 1024 # buffer_size 4096 rate 48000 } } pcm.mixin { type dsnoop ipc_key 5978293 ipc_key_add_uid yes slave { pcm "hw:0,0" channels 2 period_size 256 buffer_size 2 rate 48000 } bindings { 0 0 0 1 } } pcm.dsp0 { type plug slave.pcm "mixin" } [ we tried many period_size buffer_size with no success) the coredump says nothing -------------------------------- (no debugging symbols found) Using host libthread_db library "/lib/tls/libthread_db.so.1". Core was generated by `arecord -D plug:mixin toto.wav'. Program terminated with signal 11, Segmentation fault. #0 0xb7eae080 in ?? () --------------------------------- with other heaset non usb (sound chipset on the pother board) it runs ok. we are using a debian etch with alsa 1.0.13-5 we tried to exclude the device because of adaptative/non_adaptative mode, but nothing changes. http://www.mail-archive.com/linux-usb-devel@xxxxxxxxxxxxxxxxxxxxx/msg20300.html what we would like to do is being able to have 2 applications dealing with capture stream (for exemple arecord toto.wav, recording on the current uc AND "aoss vlc" streaming /dev/dsp0). thanks in advance for your help hervé ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
