ALSA lib pcm_dmix.c:1063:(snd_pcm_dmix_open) unable to create IPC semaphore

Fri Jun 11 09:32:24 CEST 2021

alsa-project/alsa-lib issue #153 was edited from Cean1024:

alsa info:
  alsa-config-1.0    
  alsa-lib-1.1.5
  alsa-plugins-1.1.5
  alsa-utils-1.1.5

asound.conf:

```
pcm.dmixer {
    type dmix
    ipc_key 1024
    slave {
        pcm "hw:0,0"
        period_time 0
        period_size 1024
        buffer_size 4096
        rate 48000
        format "S32_LE"
        channels 2
    }

    bindings {
        0 0
        1 1
    }
}
```


test cmd:

```
arecord -f dat | aplay -f dat -D plug:dmixer
```

Issue URL     : https://github.com/alsa-project/alsa-lib/issues/153
Repository URL: https://github.com/alsa-project/alsa-lib