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

[Stefano Panella]

On 05/24/2013 03:18 AM, Raymond Yau wrote:
>
> >
> > 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
>
The problem I have is that the analog device is on card 1 as cat 
/proc/asound/pcm is showing:

 > 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