Error Presentation

default user has no sound, but the root user has sound.
after some attempts, my user group is:

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zarkli adm dialout cdrom floppy sudo audio dip video plugdev netdev wireshark bluetooth lpadmin pulse-access kaboxer

but it is of no use.
I tried to catch the log of pulseaudio service by using command systemctl --user status pulseaudio, and I got error log like this :

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xxx failed to create sink input: sink is suspended.
xxx failed to create sink input: sink is suspended.
...

solution

change(comment) /etc/pulse/default.pa:

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### Automatically suspend sinks/sources that become idle for too long
load-module module-suspend-on-idle

to

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### Automatically suspend sinks/sources that become idle for too long
#load-module module-suspend-on-idle

reference

StackExchange