Hi
I am using a USB sound card in Linux openwrt. When I want to try using alsa-lib to play sounds or voices it prints an error and do nothing. I used aplay, baresip (a sip client use alsa) and also my own program using alsa-lib to play sound but the same problem occur:
ALSA lib pcm_direct.c:1137:(snd1_pcm_direct_initialize_poll_fd) unable to open timer 'hw:CLASS=3,SCLASS=0,CARD=0,DEV=0,SUBDEV=0'
ALSA lib pcm_dmix.c:1101:(snd_pcm_dmix_open) unable to initialize poll_fd
I can play the sounds via madplay, but not alsa players. Moreover, I could use alsamixer or alsactl to control the driver and sound card.
Here is my sound card listed byaplay -l
root@OpenWrt:~# aplay -l * List of PLAYBACK Hardware Devices *
card 0: AUDIO [MV USB AUDIO], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
Any help would be appreciated,
Thanks,
Majid.
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Hi
I am using a USB sound card in Linux openwrt. When I want to try using
alsa-libto play sounds or voices it prints an error and do nothing. I usedaplay,baresip(a sip client use alsa) and also my own program using alsa-lib to play sound but the same problem occur:I can play the sounds via
madplay, but not alsa players. Moreover, I could usealsamixeroralsactlto control the driver and sound card.Here is my sound card listed by
aplay -lAny help would be appreciated,
Thanks,
Majid.
I found the problem, and it is related to openwrt misconfiguration. The problem described in link below:
https://git.lede-project.org/?p=source.git;a=commitdiff;h=2ab6aaca4dfe1265006dae3f3cd0fd838f9bf2af
It needs to add CONFIG_SND_PCM_TIMER to /package/kernel/linux/modules/sound.mk file.