| Hi, I have an AudioScience card running on a Sun 4100 with Linux Ubuntu 6.10. I had to re-compile kernel and alsa with a gcc 3.X as it was not working with gcc4. Now everything is OK. The card can play/record sound with the aplay/arecord tool like : # arecord -fdat -Dhw:0,0,0 -vvv /tmp/test1 Recording WAVE '/tmp/test1' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo Hardware PCM card 0 'AudioScience ASI6416' device 0 subdevice 0 Its setup is: stream : CAPTURE access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 16 buffer_size : 16384 period_size : 4096 period_time : 85333 tick_time : 10000 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 4096 xfer_align : 4096 start_threshold : 1 stop_threshold : 16384 silence_threshold: 0 silence_size : 0 boundary : 1073741824 Max peak (8192 samples): 0x00004e86 ############# 61% Max peak (8192 samples): 0x00005547 ############## 66% Max peak (8192 samples): 0x00004ab8 ############ 58% Max peak (8192 samples): 0x00004e27 ############# 61% Max peak (8192 samples): 0x000057b9 ############## 68% I need to have slave devices to use with darkice, so I changed the /etc/asound.conf file to : pcm.channel0plug { type plug slave { pcm "channel1" } } pcm.channel1 { type dsnoop ipc_key 147852 ipc_key_add_uid yes slave { pcm "hw:0,0,0" period_time 0 period_size 1024 buffer_size 5461 format S16_LE rate 48000 } } But when I try to record on channel "channel0plug" : # arecord -fdat -Dchannel0plug -vvv /tmp/test1 ALSA lib pcm_direct.c:874:(snd_pcm_direct_initialize_slave) slave plugin does not support mmap interleaved or mmap noninterleaved access ALSA lib pcm_dsnoop.c:569:(snd_pcm_dsnoop_open) unable to initialize slave arecord: main:550: audio open error: Invalid argument Is this a limitation of the snd-asihpi driver ? is it from alsa ? is it from kernel ? is it a missconfiguration in asound.conf ? What can I do to bypass this issue ? alsa version is 1.0.13 asi-hpi driver is 3.05.02 kernel is 2.6.17.13-ubuntu1-custom Thanks |
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