[Pkg-utopia-maintainers] Bug#1115893: Acknowledgement (pipewire-system-services: normal users cannot play sound)

[Sébastien Hinderer]

One thing that really surprises me is this:

# ls -ln /var/run/pipewire/pipewire-0
srw-rw---- 1 118 65534 0 24 sept. 20:29 /var/run/pipewire/pipewire-0=

But in /etc/group I have:

pipewire:x:127:

So the pipewire group does exist, which is confirmed by:

# addgroup pipewire
fatal: The group `pipewire' already exists.

Also, /usr/lib/systemd/system/pipewire.socket says:

SocketUser=pipewire
SocketGroup=pipewire
SocketMode=0660

So the group looks good.

Evenmore strange to me, if I change the SocketMode=0660 so that it
becomes:

SocketMode=0666

After a reboot I get:

# ls -ln /var/run/pipewire/pipewire-0
srw-rw-rw- 1 118 65534 0 24 sept. 20:36 /var/run/pipewire/pipewire-0=

So one can see that the permission of the socket has changed, it has
become readable and writeable by others, which was not the case
initially.

This is a temporary fix to the bug reported here, but it also shows that
the systemd socket file _is_ read.

Finally, once all this will be understood and fixed, it may be helpful
for users to document tat the users that are allowed to use the
system-wide pipewire service should be added to the pipewire group,
meaning that it won't be enough to be in the audio group. Or the service
uses the audio group rather than a dedicated pipewire one,  but I assume
this won't be correct either as piipewire supports both audio and video.