On 25 May 2017 14:49, "Takashi Iwai" tiwai@suse.de wrote:
On Wed, 24 May 2017 21:13:46 +0200, Cheng Sun wrote:
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.
1a9bd0f0448106b917ae7f7bedccfcbf6ce84802The error message is:
ALSA lib pcm_dmix.c:1077:(snd_pcm_dmix_open) unable to create IPCshm 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=c2fbca45102933ddf9ca7...
There is a known problem when you mix up two alsa-lib versions because of the changes in dmix shmem struct. The solution should upgrade all users.
(Apologies for duplicate email --accidentally sent the first reply to the wrong address.)
Arch Linux has upgraded both its 32 and 64 bit packages to v1.1.4, and I'm still experiencing this problem.
While bisecting the bug I linked against two compiles of the same alsa-lib versions each time.
Let me know if I can provide any other information.
Cheers, Cheng