Hifiberry digi+ not working with January update

Help and Support Raspberry Pi
101

Hi
I am having a problem that hifiberry is not running in dmix mode.

speaker-test -c 2 -t wav -d dmixer-hifiberry

ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to create IPC semaphore
Playback open error: -13,Permission denied

is is running with:
sudo speaker-test -c 2 -t wav -d dmixer-hifiberry

how and where to adjust permissions?

Thanks t

102

solved by adding:

ipc_perm 0666 # mixing for all users

to dmix device pluging in asound.conf