rhgb freezing computer

[Alan Cox]

On Tue, Sep 26, 2006 at 04:43:26PM -0400, Adam Jackson wrote:
> rhgb X				gdm X
> 				VT_ACTIVATE 7
> VT_ACTIVATE 1
> 				VT_WAITACTIVE 7
> 

Some variant where both do VT_ACTIVATE may mean one of them never
gets its screen

> >Also does this ever occur without selinux ?
> 
> It doesn't appear to happen with selinux=0.  Suspect that's more timing 
> than policy though.

That may not be - there is a signal failure path that is specifically
different and can only happen in the SELinux case if SELinux decides
the person doing the switch isn't allowed to signal the current 
graphical vt owner.