Clemens Ladisch a écrit :
daniel huhardeaux wrote:
May 22 11:43:27 nomade kernel: drivers/usb/class/audio.c: v1.0.0:USB Audio Class driver
May 22 11:43:27 nomade usb.agent[8167]: snd-usb-audio: blacklisted
Here you are using the OSS driver (audio).
Yes
May 22 11:44:13 nomade kernel: usbcore: registered new driver snd-usb-audio
Here the ALSA driver (snd-usb-audio) is loaded, but I think the other
driver (audio) was still loaded at this point.
No
May 22 11:46:12 nomade kernel: usbaudio: failure (error -32) to get output sampling frequency device 2 interface 1 endpoint 0x1 May 22 11:46:18 nomade kernel: usbaudio: failure (error -32) to get output sampling frequency device 2 interface 1 endpoint 0x1 May 22 11:52:18 nomade kernel: usbaudio: failure (error -32) to get output sampling frequency device 2 interface 1 endpoint 0x1 May 22 11:52:21 nomade kernel: usbaudio: failure (error -32) to get output sampling frequency device 2 interface 1 endpoint 0x1
and here too there is a problem with endpoint 0x1. Is this an alsa issue
or should it be forwarded to USB kernel mailing list?
These messages are from the "audio" driver, the people in the
linux-usb-devel list might want to hear about it.
Done last week
And that did the trick: it works! So what now: should it stay like it is or can I help you (I put USB list in copy) to debug it to have a clean driver?
May 22 11:11:46 nomade kernel: 5:1:1: cannot get freq at ep 0x1
May 22 11:11:46 nomade kernel: 5:2:1: cannot get freq at ep 0x82
These messages are from the snd-usb-audio driver.
It seems your device doesn't conform to the USB Audio specification.
It might be possible to work around this. Please try the following: edit the file sound/usb/usbaudio.c, search for "cannot get freq", and replace the following line:
return err;
with:
return 0;
Please let me know.
Many thanks Clemens.
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