On Fri, Mar 21, 2014 at 11:46:38AM +0200, Andrei POPESCU wrote: > On Vi, 21 mar 14, 09:52:09, Gian Uberto Lauri wrote: > > > > You can access the console X was started from even when the machine is > > locked. > > Seriously? I'd find that to be a severe bug in the said locking > application.
It's a feature of linux being multi-user. You come up to a machine that's running Xscreensaver (et al.) change to another VT, login there and start another X server. GDM can facilitate this with the Switch User functionality, but it's perfectly normal behaviour even without. If you don't want people terminating your X session from the console, I think the best solution is to use a display manager, which re-uses the VT, and to turn on DontZap.
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