Unable to change X resolution

[Mike Linksvayer]

On Fri, Jun 16, 2006 at 02:46:05PM -0300, Derek Broughton wrote:
> Mike Linksvayer wrote:
> I've never tried the "UseModes" option, so what happens if you take the
> modelines out of the Modes section and put them directly in the Monitor
> section.  What happens if you remove the modeline for one of the modes that
> _does_ work - do you get a syntax error?

No change in either case.  The Modelines and even Modes directives
appear to be superfluous.  I can comment them all out with no change
of behavior.

My current Screen section:

Section "Screen"
  Identifier  "Default Screen"
  Device       "Intel Corporation Intel Default Card"
  Monitor      "Generic Monitor"
  DefaultDepth 24

  Subsection "Display"
    Depth       24
    #Modes       "1920x1200" "1600x1200" "1280x1024" "1024x768" "800x600"
  EndSubsection
EndSection

On Fri, Jun 16, 2006 at 07:38:25PM +0100, Toby Kelsey wrote:
> If you want to find out how your xorg.conf is being processed, a good
> file to look at is /var/log/Xorg.0.log
> 
> Are there any error message in that file?

Thanks for that tip.  The file is rather long so I put it at
http://gondwanaland.com/tmp/Xorg.0.log.txt

The only errors are in this snippet:

(II) LoadModule: "GLcore"
(II) Loading /usr/lib/xorg/modules/extensions/libGLcore.so
dlopen: /usr/lib/xorg/modules/extensions/libGLcore.so: undefined symbol: __glXLastContext
(EE) Failed to load /usr/lib/xorg/modules/extensions/libGLcore.so
(II) UnloadModule: "GLcore"
(EE) Failed to load module "GLcore" (loader failed, 7)

This bit seems possibly relevant:

(WW) I810(0): config file hsync range 68.5714-75.7895kHz not within DDC hsync ranges.
(II) I810(0): Generic Monitor: Using hsync range of 68.57-75.79 kHz
(II) I810(0): Generic Monitor: Using vrefresh value of 60.00 Hz
(II) I810(0): Increasing the scanline pitch to allow tiling mode (1920 -> 2048).
(--) I810(0): Virtual size is 1920x1200 (pitch 2048)
(**) I810(0): *Built-in mode "1920x1200"
(**) I810(0): *Built-in mode "1600x1200"
(--) I810(0): Display dimensions: (330, 210) mm
(--) I810(0): DPI set to (147, 145)

However I don't know what config file is being referenced, certainly
not xorg.conf.

-- 
  Mike Linksvayer
  http://gondwanaland.com/ml/