Bug#266106: possible solution (was Re: Keyboard not working in KDM sometimes)

[Örjan Ekeberg <orjan@nada.kth.se>]

I can confirm that both methods of forcing the X server to use vt7 fixes 
(or works around) the "keyboard not working sometimes" problem. The 
problem seems to be due to a race condition during the boot process. 
Without this directive, kdm starts X on the first free virtual 
terminal. The problem here is that this happens in parallel with the 
getty process setting up login ttys on vt1 through vt6 (with the 
default /etc/inittab) and sometimes kdm grabs vt2 before getty, but 
getty then grabs vt2 and hence gets the keyboard input instead of 
kdm/X. This may happen on any of vt2, v3, ... vt6.

If kdm is restarted without a reboot, the problem does not occur since 
the vt's are already occupied.

Perhaps the correct way of fixing this is to ensure that kdm is not 
started until getty has grabbed all the vt's it need. This would then 
work regardless of how many vt's are allocated in /etc/inittab.