When I run the first command:
$ rmmod snd-usb-audio rmmod: ERROR: Module snd_usb_audio is in use
On Monday, January 27, 2014 10:57 AM, Takashi Iwai tiwai@suse.de wrote:
At Sun, 26 Jan 2014 11:45:45 -0800 (PST), Ionica Bizau wrote:
I will try them. Is this a bug in the hardware device or in the Linux driver?
It's a hardware bug.
If this is in the Linux driver, can this be fixed?
We have tons of workarounds in the driver for such broken devices. This will be just yet another one.
Takashi
Cheers
On Sunday, January 26, 2014 8:01 PM, Clemens Ladisch clemens@ladisch.de wrote: Ionica Bizau wrote:
$ amixer -c1 cget name='PCM Capture Source' numid=7,iface=MIXER,name='PCM Capture Source' ; type=ENUMERATED,access=rw------,values=1,items=2 ; Item #0 'Unit 22' ; Item #1 'Unit 22' amixer: Control hw:1 element read error: Broken pipe
The device's firmware does not allow reading this mixer control for some reason; this is probably a bug.
Please try the following commands: rmmod snd-usb-audio modprobe snd-usb-audio ignore_ctl_error=1
This makes the driver ignore errors, but cannot prevent the errors from happening in the first place. Please check if you get the desired effect when you write this control.
Regards,
Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel