[alsa-devel] Problem opening default device in haswell system using aplay

[Raymond Yau]

>
> I am working on some haswell systems running Ubuntu 12.04 and I have a
problem if I run aplay -D sysdefault.
>
> when I do:
>
> cat /proc/asound/pcm
>
> I get:
>
> 00-03: HDMI 0 : HDMI 0 : playback 1
> 00-07: HDMI 1 : HDMI 1 : playback 1
> 00-08: HDMI 2 : HDMI 2 : playback 1
> 01-00: ALC662 rev3 Analog : ALC662 rev3 Analog : playback 1 : capture 1
> 01-02: ALC662 rev3 Analog : ALC662 rev3 Analog : capture 1
>
> If I do:
>
> aplay -L | grep sysdefault
>
> I get:
>
> sysdefault:CARD=PCH
>
> where PCH is card number 1 (id = 1)
>
> on most of my systems (non haswell laptops) the default card is number 0
>
> If I run
>
> aplay -D sysdefault
>
> I get:
>
> ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
> aplay: main:682: audio open error: No such file or directory
>
> if I strace it I get:
>
> open("/dev/snd/pcmC0D0p", O_RDWR|O_NONBLOCK|O_CLOEXEC) = -1 ENOENT (No
> such file or directory)

defaults.pcm.dmix.device defaults.pcm.device

You have to change defaults.pcm.dmix.device to the device of  your hdmi if
your are not using the analog device 0