[ltp] Laptop screen fuzzy after recent reboot

[Phil Shotton]

Phil Shotton wrote:
> I just performed a reboot after taking a bunch of updates and now my 
> laptop screen is 'fuzzy'. Second LCD screen is fine, and laptop screen 
> is fine right up to the point I login. Once logged in it looks out of 
> focus as though odd pixel lines are moved down one. Affects graphics 
> as well as text.
>
> Main change of the update was kernel 2.6.27-9-generic, but booting 
> back into previous 2.6.27-7-generic makes no difference. There was 
> nothing video-related in the updates.
>
> Any ideas what might have gone wrong and how to fix?
>
Well I've fixed it but still baffled. The fix was to go to clone mode 
display (which restored the laptop display to normality) and then back 
to twin-head settings - and it still looks good. Haven't yet seen if it 
persists across a reboot. Still interested to understand what's going on 
here.

Phil
> TIA
> Phil
>
> T60p running Ubuntu intrepid
> Video is Mobility FireGL V5250
> Using xorg-server 2:1.5.2-2ubuntu3, with Radeon module 6.9.0
> Xorg config is completely stock apart from Virtual to allow twin-head 
> and AccelMethod EXA:
>
>    Section "Monitor"
>            Identifier      "Configured Monitor"
>    EndSection
>
>    Section "Screen"
>            Identifier      "Default Screen"
>            Monitor         "Configured Monitor"
>            Device          "Configured Video Device"
>            SubSection "Display"
>                    Virtual 2800 1050
>            EndSubSection
>    EndSection
>
>    Section "Device"
>            Identifier      "Configured Video Device"
>            Option  "AccelMethod"   "EXA"
>    EndSection
>
> Changing screen resolution makes no difference.