Hi,
I have 2 CM6571 usb sound cards.
In Ubuntu, i want to use these 2 cardds simultaneously. I open 2 terminals, and arecord -D plughw:1,0 | aplay -D plughw:1,0 in one terminal, it works well. but when i type arecord -D plughw:2,0 | aplay -D plughw:2,0 in another terminal, in second terminal, it says
Recording WAVE 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono
arecord: xrun:1552: Playing WAVE 'stdin' : read/write error, state = PREPAREDUnsigned 8 bit,
Rate 8000 Hz, Mono
aplay: set_params:1297: Unable to install hw params:
ACCESS: RW_INTERLEAVED
FORMAT: U8
SUBFORMAT: STD
SAMPLE_BITS: 8
FRAME_BITS: 8
CHANNELS: 1
RATE: 8000
PERIOD_TIME: 125000
PERIOD_SIZE: 1000
PERIOD_BYTES: 1000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 4000
BUFFER_BYTES: 4000
TICK_TIME: 0
I think it is about the usb driver in alsa, any ideas?
On Mon, Aug 4, 2014 at 2:28 PM, Takashi Iwai <tiwai@xxxxxxx> wrote:
At Sun, 03 Aug 2014 03:45:44 +0200,
corubba wrote:
>
> Today I got my new sound card, a Asus Essence STX II. After plugin it in
> and booting my Linux machine, the card was recognized by lspci as audio
> controller, but not listed by alsa as soundcard. Information on support
> for this new card under linux are hard to find. Due to the hardware
> similarities between STX and STX II, I tried to modify the existing STX
> driver in order to work for the STX II too. And it seems to work quiet
> well: I have sound, can change the volumes, switch between
> speaker/headphone/frontpanel, enable the mic boost etc. I don't have the
> H6 childboard for surround sound, so I can't test that. I tested my
> patch [1] with a 3.15.8 kernel under Arch Linux.
>
> Just wanted to share this information for others to get it quickly
> working, or maybe even include it after a review from the devs.
>
>
> [1] http://pastebin.com/GaGguPvt
If the device works as expected by just this addition, I find no
problem in the patch. Please submit in the formal way as described in
Documentation/SubmittingPatches.
thanks,
Takashi
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