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tiberiur

Member

From: Europa

Registered: 2007-07-03

Posts: 25

problems with an external monitor

I have a laptop with intel 945 grafic card and I also use an external monitor (which has a nicer panel).

However I experience some strange problems with my setup:
       I usually (when I am at home) start my laptop and close the laptop screen via
       

xrandr --output LVDS --off

But, after a random period of time (I have not found any good reason for it) my external monitor goes in some sort of power save mode (the screen goes black and remains that way).
     
I usually activate the other screen (LVDS) and try to see if I can do anything.
when I type:

xrandr -q 
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 2048 x 2048
VGA connected (normal left inverted right x axis y axis)
   1680x1050      60.0 +
   1920x1440      60.0  
   1856x1392      60.0  
   1792x1344      60.0  
   1600x1200      75.0     70.0     65.0     60.0  
   1400x1050      75.0     72.0     60.0  
   1280x1024      59.9     60.0  
   1280x960       74.9     72.0     60.0     59.9  
   1152x864       75.0     74.8     60.0  
   1024x768       70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   768x576        75.0     72.0     60.0  
   640x480        72.8     75.0     72.8     66.7     60.0  
   720x400        70.1  
LVDS connected 1280x800+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1280x800       60.0*+   60.0  
   1280x768       60.0  
   1152x768       54.8  
   1024x768       85.0     75.0     70.1     60.0  
   832x624        74.6  
   800x600        85.1     72.2     75.0     60.3     56.2  
   640x480        85.0     72.8     75.0     59.9  
   720x400        85.0  
   640x400        85.1  
   640x350        85.1

No matter what I do I cannot live reactivate the external monitor.
(usually I try with the classic :

xrandr --output VGA --auto

)

Inittially I thought it is a problem with the driver (i810) so I upgraded yesterday the whole system.
Even after I did that and used the new driver (intel) I still had much luck as I had an other blanking event today.
An other ideea is that this is caused by faulty bios, but it is just a guess

My present day solution: reboot (yes, full reboot, because restarting the xorg has not the intended effect)

Any ideas on what may cause this?
Any help would be appreaciated.

Last edited by tiberiur (2008-05-25 20:57:31)