[Pkg-alsa-devel] Bug#913045: Bug#913045: libasound2: ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave

Elimar Riesebieter riesebie at lxtec.de
Fri Nov 16 05:32:38 GMT 2018

* Ryan Lue <ryan.lue at gmail.com> [2018-11-16 11:51 +0800]:

> Hi Elimar,
> Sorry for the radio silence. I thought I responded in a previous email,
> but I guess it never went through?
> I believe the issue goes deeper than simply setting soundcard priority.
> I’m experiencing it on two different machines, and I’m trying (and
> failing) to play sound out of the default device.
> Desktop:
>     $ cat /proc/asound/cards
>      0 [HDMI           ]: HDA-Intel - HDA Intel HDMI
>                           HDA Intel HDMI at 0xf7e14000 irq 50
>      1 [PCH            ]: HDA-Intel - HDA Intel PCH
>                           HDA Intel PCH at 0xf7e10000 irq 48
>      2 [U0x46d0x81b    ]: USB-Audio - USB Device 0x46d:0x81b
>                           USB Device 0x46d:0x81b at usb-0000:00:14.0-1, high speed
> Laptop:
>     $ cat /proc/asound/cards
>      0 [PCH            ]: HDA-Intel - HDA Intel PCH
>                           HDA Intel PCH at 0xe1240000 irq 127
> Both the .asoundrc you suggested and the one given by Pedro Silva solve
> the problem for me, but it would be nice not to need an .asoundrc to
> play sound out of the default (or only) sound device.
> Given that this is happening on a machine with only one sound card
> device, and that it was working in 1.1.6-1, is there any chance we could
> have this issue reopened?
> (FWIW, I’m working against libasound2-plugins 1.1.7-2; don’t know how to
> upgrade to 1.1.7-3, since I’m on testing and not unstable. Happy to
> help with any additional debugging.)

Well, if you want to use card 0 on both you don't need a .asoundrc.
libasound2-plugins 1.1.7-3 should arrive in testing soon. You can
add unstable to your sources.list and run

# apt update && apt install -t unstable libasound2-plugins

  On the keyboard of life you have always
  to keep a finger at the escape key;-)
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