[alsa-devel] 1.1.4 bug report: dmix fails when using both 32-bit and 64-bit clients

[Cheng Sun]

Hi all,

The following commit (released in v1.1.4) introduced an issue where a
client compiled against a 32-bit (x86) compile of alsa-lib cannot use
the same dmix as a client compiled against a 64-bit alsa-lib.

    1a9bd0f0448106b917ae7f7bedccfcbf6ce84802

The error message is:

    ALSA lib pcm_dmix.c:1077:(snd_pcm_dmix_open) unable to create IPC
shm instance

The following forum post (not mine) describes the symptoms of the
issue in more detail (although the git commit the poster specified is
not correct):

https://forums.gentoo.org/viewtopic-p-8072290.html?sid=c2fbca45102933ddf9ca7cf8b6713e56

Cheers,
Cheng