Desktop users and group membership

[Niki Kovacs]

Hi,

I'm currently fiddling with central authentication and roaming profiles. 
I have Ubuntu 14.04 LTS running on the server, and a mix of Ubuntu 12.04 
MATE and Elementary OS 0.2 (based on Ubuntu 12.04) on the client side. 
So far, NIS/NFS is working OK, users can authenticate centrally on the 
server and access their home directories.

Now I wonder what groups I can possibly affect the average desktop user 
to. On a Slackware system, for example, all my users were members of the 
following groups:

audio, cdrom, floppy, plugdev, video, power, netdev, lp, scanner

What's a reasonable choice for Ubuntu-based systems?

Cheers from the rainy South of France,

Niki
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