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[Launchpad Bug Tracker <396898@xxxxxxxxxxxxxxxxxx>]

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Hello,
on ubuntu 9.04 dual screen worked, but was buggy (the external screen displayed only half (vertical split), but the fun was, that putting a window in full screen on that external display worked... only window mode had a bug :(

but now i tried my luck on 9.10, and ... it's no more working

my netbook (with intel GMA 950) has a resolution of 1024x600
and the external monitor (a dell one) has a resolution of 1680x1050

so with the System => Preference => display tool (i guess the name, my ubuntu is French) i move the screens side by side with clone function disabled.
and then GDM as X won't start


here are the changes that the display tool made in my xorg.cong

SubSection "Display"
               Virtual 2704 1050
EndSubSection

when i start x with startx i receive a message that says "could not add
fb"

so i did a dmesg | grep drm

here is the output :
[    1.695113] [drm] Initialized drm 1.1.0 20060810
[    2.062285] fb0: inteldrmfb frame buffer device
[    2.062306] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[    2.136914] [drm] DAC-6: set mode 1680x1050 17
[    2.448490] [drm] LVDS-8: set mode 1024x600 19
[   12.974479] [drm:drm_mode_addfb] *ERROR* mode new framebuffer width not within limits
[   14.069862] [drm:drm_mode_addfb] *ERROR* mode new framebuffer width not within limits
[   15.241898] [drm:drm_mode_addfb] *ERROR* mode new framebuffer width not within limits
[   16.245814] [drm:drm_mode_addfb] *ERROR* mode new framebuffer width not within limits
[   17.061783] [drm:drm_mode_addfb] *ERROR* mode new framebuffer width not within limits
[   18.106475] [drm:drm_mode_addfb] *ERROR* mode new framebuffer width not within limits


i can make further tests, so if you have any idea or tips, i'll be happy
to help you guys resolve this bug...

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New

-- 
intel dual screen not working on karmic
https://bugs.edge.launchpad.net/bugs/396898
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