Groups, permisions, work flow

Ralf Madorf ralf.mardorf at
Sun Jan 22 11:46:46 UTC 2012

On Sun, 2012-01-22 at 03:58 +0100, Kaj Ailomaa wrote:
> My point in bringing up this problem with audio group was that new users 
> (who wouldn't know about audio group) shouldn't have to create a new 
> user and find that the new user cannot use audio applications in realtime.
> Having the option of administrating groups will of course always remain, 
> but from my point of view, a distro like UbuntuStudio should have audio 
> group as a default group for both the desktop and administrator users.
> Not having that is in my view a bug.
> As pointed out, the user who installs the system from DVD will belong to 
> audio group, but not in any other other case.
> But, in case you don't install from DVD...
> When installing ubuntustudio-packages separately from another Ubuntu 
> based distro you will not get user to belong to audio group, and there 
> is no direct explanation to why realtime won't work in this situation.
> While it is possible to find this out, isn't it much preferable for the 
> user not having to know? [snip]

You can't handle permissions that slipshod if it's for a repository used
by several "Sub-"Ubuntus. Note that I installed Edubuntu and then added
the Ubuntu Studio repository. Now imagine that this Edubuntu is used by
very young children (btw. it isn't used by children on my machine). It's
better the admin needs to google for an issue such as a group audio,
than automatically add users to groups. If you want your children being
able to run, you might not want them to be able
to run your audio work to sync a raunchy video too ;). This of cause
isn't a good example, since we would disable permissions to open such a
project folder, because a group audio anyway wouldn't protect against
As long as your Linux is for a single user only and it e.g. might only
be a DAW, perhaps without an Internet connection, you can set SUID for
all folders, you can run audio sessions as root etc., but as soon as
it's a multi-user machine, there's the need to have an admin with
Regarding to the group audio there might be no security issue, dunno, I
just want to warn that there might be a risk we all miss.

2 Cents,


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