Le 20/07/2016 15:42, Simon Hobson a écrit :
> What I struggle to understand is why "multiseat" as it's being discussed here (as an aside to the "can I shutdown from the login screen" discussion) should be considered so "hard". It's really (or shouldn't be) any different to (say) serial terminals - instantiate a "login process" for each instance of the hardware, "getty" on a serial line, choice of display manager (or whatever) for each KVM set.
> Or have I missed something obvious ?
I think it was a mistake to introduce the concept of multiseat in
this discussion. What matters is who has access to the shutdown button
of the DM. Wether the DM exposes a button or traps a special username
makes no difference.
Note that the priviledge to shutdown a computer is not so big,
compared to the priviledges one gets with the root password. On many
servers, I give the shutdown priviledge to several users who ignore the
root password - with sudo.
In any case, any person who has the possibility to push the power
button or cut the power cord should be given the opportunity to click
the halt button instead. ctrl-alt-f1+ctrl-alt-del can be used to
reboot, but there's nothing to halt.
Didier