Public bug reported:

My netbook (Sony Vaio VPCW 115xg)  has an intel 945GME video card
controller.

The built-in LVDS1 is 1366x768.  The add-on VGA1 is 1920x1080.  xrandr
reports the maximum resolution of screen0 as 409x4096.  I'm pretty sure
that any horizontal resolution above 2048 causes screen corruption.
Tried under KDE and Gnome3.

The display properties settings dialog allows setting the two screens
horizontally (total res 3300 or so), which results in massive screen
corruption (machine hasn't crashed; console works)

xrandr reports (vertically stacked screens):
 Screen 0: minimum 320 x 200, current 1920 x 1848, maximum 4096 x 4096
LVDS1 connected 1366x768+554+1080 (normal left inverted right x axis y axis) 
0mm x 0mm
   1366x768       59.9*+
   1360x768       59.8     60.0
   1024x768       60.0
   800x600        60.3     56.2
   640x480        59.9
VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 
268mm
   1920x1080      60.0*+
   1680x1050      60.0
   1280x1024      75.0     60.0
   1280x960       60.0
   1152x864       75.0
   1024x768       75.1     60.0
   832x624        74.6
   800x600        75.0     60.3     56.2
   640x480        75.0     60.0
   720x400        70.1

I wonder if maximum horizontal shouldn't be 2048x instead of 4096x on
this particular hardware?

I've reported this under xserver-xorg-video-intel, but it might be an
Intel kernel driver bug.  Stock kernel, opensource driver.

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

** Description changed:

  My netbook (Sony Vaio VPCW 115xg)  has an intel 945GME video card
  controller.
  
  The built-in LVDS1 is 1366x768.  The add-on VGA1 is 1920x1080.  xrandr
  reports the maximum resolution of screen0 as 409x4096.  I'm pretty sure
  that any horizontal resolution above 2048 causes screen corruption.
  Tried under KDE and Gnome3.
  
  The display properties settings dialog allows setting the two screens
- horizontally (total res 3600 or so), which results in massive screen
+ horizontally (total res 3300 or so), which results in massive screen
  corruption (machine hasn't crashed; console works)
  
  xrandr reports (vertically stacked screens):
-  Screen 0: minimum 320 x 200, current 1920 x 1848, maximum 4096 x 4096
+  Screen 0: minimum 320 x 200, current 1920 x 1848, maximum 4096 x 4096
  LVDS1 connected 1366x768+554+1080 (normal left inverted right x axis y axis) 
0mm x 0mm
-    1366x768       59.9*+
-    1360x768       59.8     60.0  
-    1024x768       60.0  
-    800x600        60.3     56.2  
-    640x480        59.9  
+    1366x768       59.9*+
+    1360x768       59.8     60.0
+    1024x768       60.0
+    800x600        60.3     56.2
+    640x480        59.9
  VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm 
x 268mm
-    1920x1080      60.0*+
-    1680x1050      60.0  
-    1280x1024      75.0     60.0  
-    1280x960       60.0  
-    1152x864       75.0  
-    1024x768       75.1     60.0  
-    832x624        74.6  
-    800x600        75.0     60.3     56.2  
-    640x480        75.0     60.0  
-    720x400        70.1  
+    1920x1080      60.0*+
+    1680x1050      60.0
+    1280x1024      75.0     60.0
+    1280x960       60.0
+    1152x864       75.0
+    1024x768       75.1     60.0
+    832x624        74.6
+    800x600        75.0     60.3     56.2
+    640x480        75.0     60.0
+    720x400        70.1
  
  I wonder if maximum horizontal shouldn't be 2048x instead of 4096x on
  this particular hardware?
  
  I've reported this under xserver-xorg-video-intel, but it might be an
  Intel kernel driver bug.  Stock kernel, opensource driver.

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/911649

Title:
  Wrong maximum resolution for multiple monitors (Intel 945GME)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/911649/+subscriptions

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