Problems with xrandr using xorg-server 1.8.0 with Intel graphics

[Łukasz Maśko]

I'm having problems with external output of my laptop after I've upgraded to 
xserver 1.8.0. I can turn on the VGA1 output, but I cannot properly turn it 
off - the X system gets frozen (screen gets blank, mouse pointer doesn't 
move, keyboard is not responding). I am able to reboot my laptop thanks to 
acpi event. There is not a single trace in log files.

Yesterday I got a situation, in which after turning on VGA1 output and  
opening kaffeine (XV output used), in a console I got a message saying 
something like, that (probably) intel driver was not able to allocate 
something and that I should expect lags or even frozen display, but today I 
was not able to reproduce it in any way (therefore I'm not pasting the exact 
message here), so that might have been just a coincidence.

In the same time, everything works well on xserver 1.7.6. I'm using intel 
graphics driver 2.11.0, Mesa 7.8.1, libdrm 2.4.20, kernel 2.6.33.2.

Does anyone have any idea, what can be wrong and how to fix it?

-- 
Łukasz Maśko                                           GG:   2441498    _o)
Lukasz.Masko(at)ipipan.waw.pl                                           /\\
Registered Linux User #61028                                           _\_V
Ubuntu: staroafrykańskie słowo oznaczające "Nie umiem zainstalować Debiana"