[alsa-devel] Alsa: USB Class 2 Audio soundcard device disappears suddenly
Hi,
I'm using an USB Class 2 Audio DAC (basically a soundcard) with my Linux box and MPD software.
It works great when playing files stored in a remote share, but when playing files from an USB pen, it stops playing in a few minutes.
Mpd.log shows this:
Code: Jul 30 13:03 : output: "USB" [alsa] failed to play: No such device Jul 30 13:03 : output: closed plugin=alsa name="USB" ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card Jul 30 13:03 : output: Failed to open "USB" [alsa]: Failed to open ALSA device "hw:0,0": No such file or directoryIt seems to be somewhat related to the USB bus not being able to cope with both PCM streaming to the soundcard and reading from the flash pen simultaneously, I guess.
So, anybody faced this issue previously and can provide some hints to solve this?
MPD is 0.17, kernel is 3.2.17, alsa-utils is 1.0.25.
On 31.07.2012 00:32, Joao Bonina wrote:
Hi,
I'm using an USB Class 2 Audio DAC (basically a soundcard) with my Linux box and MPD software.
It works great when playing files stored in a remote share, but when playing files from an USB pen, it stops playing in a few minutes.
Mpd.log shows this:
Code: Jul 30 13:03 : output: "USB" [alsa] failed to play: No such device Jul 30 13:03 : output: closed plugin=alsa name="USB" ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card Jul 30 13:03 : output: Failed to open "USB" [alsa]: Failed to open ALSA device "hw:0,0": No such file or directoryIt seems to be somewhat related to the USB bus not being able to cope with both PCM streaming to the soundcard and reading from the flash pen simultaneously, I guess.
So, anybody faced this issue previously and can provide some hints to solve this?
MPD is 0.17, kernel is 3.2.17, alsa-utils is 1.0.25.
Does the kernel log or 'dmesg' show anything weird what that happens?
Daniel
participants (2)
-
Daniel Mack
-
Joao Bonina