On Wed, Jun 09, 2010 at 07:07:08AM +0200, Olivier Berger wrote:
> 
> Hi.
> 
> From time to time, gnome-display-properties will detect in a wrong way the 
> presence of an external monitor (running a laptop with internal LCD and 
> external VGA connector).
> 
> Even though there's none connected, the display then switches to 2-screens 
> large desktop, and unfortunately displays current panels and windows on the 
> hidden part, leaving the laptop's LCD screen empty (but desktop icons).
> 
> It's then a pain to start gnome-display-properties again from nautilus, to be 
> able to re-detect a single screen mode again.
> 
> FYI, lspci reports :
> 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset 
> Integrated Graphics Controller (rev 07)
> 

Would it be possible that this bug lies in the kernel / X drivers ?

Also, note that this happens also when totem starts playing videos (see 
#592928).

Thanks in advance.

Best regards,



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