Dne 06. 01. 21 v 10:03 Takashi Iwai napsal(a):
> OK, then could you try the v3 patch below?
I tried v3 patch. Playback works, but recording does not - i found errors like these in the log during recording:
Jan 6 18:07:08 antracit kernel: [ 619.973372] retire_capture_urb: 21 callbacks suppressed
Jan 6 18:07:13 antracit kernel: [ 624.974175] retire_capture_urb: 9993 callbacks suppressed
Jan 6 18:07:18 antracit kernel: [ 629.978015] retire_capture_urb: 9999 callbacks suppressed
Jan 6 18:08:04 antracit kernel: [ 675.932930] retire_capture_urb: 102 callbacks suppressed
Jan 6 18:08:09 antracit kernel: [ 680.936305] retire_capture_urb: 9998 callbacks suppressed
Jan 6 18:08:14 antracit kernel: [ 685.940643] retire_capture_urb: 10000 callbacks suppressed
Jan 6 18:09:45 antracit kernel: [ 776.168655] retire_capture_urb: 302 callbacks suppressed
Jan 6 18:09:50 antracit kernel: [ 781.169504] retire_capture_urb: 9993 callbacks suppressed
Jan 6 18:09:55 antracit kernel: [ 786.173337] retire_capture_urb: 9999 callbacks suppressed
(the original "Incompatible EP setup for 0x82" error was also present in the log)
The arecord command does nothing and after few seconds it fails with:
$ arecord -D hw:CARD=DJM250MK2 -f S24_3LE -c 8 -r 48000 > v3.wav
Recording WAVE 'stdin' : Signed 24 bit Little Endian in 3bytes, Rate 48000 Hz, Channels 8
arecord: pcm_read:2153: read error: Input/output error
The stream0 files from v2 and v3 differs in: Playback / Implicit Feedback Mode: Yes/No
BTW: playback or capture sometimes returns error for the first time but next attempts are successful. However I saw this behavior even in the older versions, so it is nothing v3 specific.
This is the error I got sometimes during the first run:
$ arecord -D hw:CARD=DJM250MK2 -f S24_3LE -c 8 -r 48000 > v3.wav
Recording WAVE 'stdin' : Signed 24 bit Little Endian in 3bytes, Rate 48000 Hz, Channels 8
arecord: set_params:1407: Unable to install hw params:
ACCESS: RW_INTERLEAVED
FORMAT: S24_3LE
SUBFORMAT: STD
SAMPLE_BITS: 24
FRAME_BITS: 192
CHANNELS: 8
RATE: 48000
PERIOD_TIME: (455104 455105)
PERIOD_SIZE: 21845
PERIOD_BYTES: 524280
PERIODS: 2
BUFFER_TIME: (910208 910209)
BUFFER_SIZE: 43690
BUFFER_BYTES: 1048560
TICK_TIME: 0
If I execute the same command again, it works. (but not in v3).
Franta
Pioneer DJ Corporation DJM-250MK2 at usb-0000:00:12.2-3, high speed : USB Audio
Playback:
Status: Stop
Interface 0
Altset 1
Format: S24_3LE
Channels: 8
Endpoint: 0x01 (1 OUT) (ASYNC)
Rates: 48000
Data packet interval: 500 us
Bits: 0
Sync Endpoint: 0x82 (2 IN)
Sync EP Interface: 0
Sync EP Altset: 1
Implicit Feedback Mode: No
Capture:
Status: Stop
Interface 0
Altset 1
Format: S24_3LE
Channels: 8
Endpoint: 0x82 (2 IN) (ASYNC)
Rates: 48000
Data packet interval: 500 us
Bits: 0
Sync Endpoint: 0x82 (2 IN)
Sync EP Interface: 0
Sync EP Altset: 1
Implicit Feedback Mode: No
