Add new resolution mode failed

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Add new resolution mode failed

Postby ttgump on Thu Mar 07, 2013 6:46 pm

Hi everyone,
I am using linux mint debian on my thankpad t400 notebook. The default resolution is 1440 * 900. I want to add a new resolution mode 1600 * 900 but failed.
xrandr display:
Code: Select all
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1600 x 1600
LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis) 304mm x 190mm
   1440x900       60.2*+   50.0 
   1280x800       60.0 +   50.0 
   1152x864       60.0 +   50.0 
   1280x768       59.9 +   50.0 
   1280x720       60.0 +   50.0 
   1024x768       60.0 +   50.0 
   1024x600       60.4 +   50.0 
   800x600        60.3 +   50.0 
   800x480        60.0 +   50.0 
   720x480        60.0 +   50.0 
   640x480        60.0 +   50.0 
DFP1 disconnected (normal left inverted right x axis y axis)
CRT1 disconnected (normal left inverted right x axis y axis)
  1600x900_60.00 (0xdb)  118.2MHz
        h: width  1600 start 1696 end 1856 total 2112 skew    0 clock   56.0KHz
        v: height  900 start  903 end  908 total  934           clock   59.9Hz


When I enter "xrandr --addmode LVDS 1600x900_60.00" It will display:
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X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  157 (RANDR)
  Minor opcode of failed request:  18 (RRAddOutputMode)
  Serial number of failed request:  27
  Current serial number in output stream:  28


glxinfo | grep "OpenGL" displays
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OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: ATI Mobility Radeon HD 3400 Series
OpenGL version string: 3.3.11672 Compatibility Profile Context
OpenGL shading language version string: 3.30
OpenGL extensions:


Does anyone know how to solve this problem? Thanks.
ttgump
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