intel graphics card dual monitor woes

Wed Mar 18 06:37:12 PDT 2009

Hi All,

Anybody ever seen this happen:

http://picasaweb.google.com/clrrsnd/UntitledAlbum#5313358945599046610

I have a lenovo T61, which carries an Intel GM965/GL960 graphics card. When using a dual monitor setup with different resolutions for laptop screen and monitor sometimes and only after a while the text becomes practically unreadable like shown. It affects all text, menus, terminal windows, etc. When I switch console (ctrl-alt-Fx) and back, sometimes it is fine again for a short while. This only happens in dual-monitor setup.

I use xubuntu intrepid, xserver-xorg-video-intel version: 2:2.5.1-1ubuntu5~intrepid.

My xorg.conf, xrandr and xdpyinfo is pasted below.

Any ideas would be appreciated.

Many thanks,

Meindert

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
EndSection

Section "Device"
Identifier "Intel 965GM"
Driver "intel"

Option "monitor-VGA" "bar"
Option "monitor-LVDS" "foo"
EndSection

Section "Monitor"
Identifier "foo"

Option "Position" "0 1024"
EndSection

Section "Monitor"
Identifier "bar"

Option "Above" "foo"
Option "PreferredMode" "1280x1024"
Option "Position" "0 0"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "965GM"
Monitor "foo"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1680x1050" "1280x1024" "1024x768" "640x480"
Virtual 1680 2074
EndSubSection
EndSection

xrandr:

Screen 0: minimum 320 x 200, current 1680 x 2074, maximum 1680 x 2074
VGA connected 1280x1024+0+0 (normal left inverted right x axis y axis) 338mm x 270mm
   1280x1024      60.0*+   75.0     60.0     60.0* 
   1600x1024      60.2  
   1400x1050      60.0  
   1440x900       59.9  
   1280x960       75.0     60.0     60.0  
   1360x768       59.8  
   1152x864       75.0     75.0     75.0     70.0     60.0  
   1024x768       75.1     75.0     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        75.0     72.8     72.8     75.0     66.7     60.0     59.9  
   720x400        70.1  
LVDS connected 1680x1050+0+1024 (normal left inverted right x axis y axis) 331mm x 207mm
   1680x1050      60.1*+   50.1  
   1600x1024      60.2  
   1280x1024      60.0  
   1440x900       59.9  
   1280x960       60.0  
   1360x768       59.8  
   1152x864       60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
TMDS-1 disconnected (normal left inverted right x axis y axis)

xdpyinfo:

name of display:    :0.0
version number:    11.0
vendor string:    The X.Org Foundation
vendor release number:    10502000
X.Org version: 1.5.2
maximum request size:  16777212 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    7
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 4, bits_per_pixel 8, scanline_pad 32
    depth 8, bits_per_pixel 8, scanline_pad 32
    depth 15, bits_per_pixel 16, scanline_pad 32
    depth 16, bits_per_pixel 16, scanline_pad 32
    depth 24, bits_per_pixel 32, scanline_pad 32
    depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 255
focus:  window 0x260000b, revert to Parent
number of extensions:    30
    BIG-REQUESTS
    Composite
    DAMAGE
    DOUBLE-BUFFER
    DPMS
    Extended-Visual-Information
    GLX
    MIT-SCREEN-SAVER
    MIT-SHM
    MIT-SUNDRY-NONSTANDARD
    RANDR
    RECORD
    RENDER
    SECURITY
    SGI-GLX
    SHAPE
    SYNC
    TOG-CUP
    X-Resource
    XC-APPGROUP
    XC-MISC
    XFIXES
    XFree86-DGA
    XFree86-Misc
    XFree86-VidModeExtension
    XINERAMA
    XInputExtension
    XKEYBOARD
    XTEST
    XVideo
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    1680x2074 pixels (338x418 millimeters)
  resolution:    126x126 dots per inch
  depths (7):    24, 1, 4, 8, 15, 16, 32
  root window id:    0x94
  depth of root window:    24 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x20
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 16777215
  options:    backing-store NO, save-unders NO
  largest cursor:    64x64
  current input event mask:    0x7a802c
    ButtonPressMask          ButtonReleaseMask        LeaveWindowMask          
    ExposureMask             StructureNotifyMask      SubstructureNotifyMask   
    SubstructureRedirectMask FocusChangeMask          PropertyChangeMask       
  number of visuals:    3
  default visual id:  0x21
  visual:
    visual id:    0x21
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x22
    class:    DirectColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x72
    class:    TrueColor
    depth:    32 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits

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