[gentoo-user] What groups should user "root" be in?

[Dr Rainer Woitok]

Greetings,

still hunting down the reasons for my  laptop not producing any sound, I
have meanwhile found reports on the web "no sound even though root is in
group audio" or "Dbus doesn't "care" who root is -- it checks the ident-
ity of the account  that requested an action,  and if that account isn't
allowed to perform that action, the request is denied" [1].

I can't remember  ever having manually added user  "root"  to any groups
since I installed Gentoo on my laptop (as opposed to adding my own user-
id to quite some groups)m and these are the few groups "root" is into:

   $ id root
   uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel),11(floppy),26(tape),27(video)
   $

Should there be more?  In particular, should "root" be in group "audio"?

Sincerely,
  Rainer

[1] https://www.linuxquestions.org/questions/showthread.php?p=3640443#post3640443