External monitor resolution problem (i810)

[Gordan Krešić]

R.L. Horn wrote:
> On Tue, 21 Nov 2006, Gordan Kresic wrote:
> 
>> ...what I want is to switch my screen...to external screen...then to 
>> _change resolution_ to external screen's native resolution (which is 
>> greater than my laptops native - 1280x1024 vs 1280x800).
> 
> You might try adding "Virtual 1280 1024" and/or 'Modes "1280x800" 
> "1280x1024"' to the appropriate Screen->Display subsection of your config.

Tnx for the hint, but it is not working - working area is indeed increased
to 1280x1024, but I have to scroll through it with mouse (at upper and lower
borders) because external monitor is still showing only 1280x800 pixels.

What bothers me are these lines from Xorg.0.log:

[...]
(II) I810(0): Laptop LCD: Using hsync range of 45.71-50.53 kHz
(II) I810(0): Laptop LCD: Using vrefresh value of 60.00 Hz
(II) I810(0): Not using mode "1280x1024" (no mode of this name)
(II) I810(0): Increasing the scanline pitch to allow tiling mode (1280 -> 2048).
(**) I810(0): Virtual size is 1280x1024 (pitch 2048)
(**) I810(0): *Built-in mode "1280x800"
(**) I810(0): *Built-in mode "1024x768"
(++) I810(0): DPI set to (100, 100)

[...]

Why it doesn't want to use my mode "1280x1024" that I have in Screen section
of xorg.conf when "915resolution -l" gives me:

Intel 800/900 Series VBIOS Hack : version 0.5.2

Chipset: 945GM
BIOS: TYPE 1
Mode Table Offset: $C0000 + $269
Mode Table Entries: 36

Mode 30 : 640x480, 8 bits/pixel
Mode 32 : 800x600, 8 bits/pixel
Mode 34 : 1024x768, 8 bits/pixel
Mode 38 : 1280x1024, 8 bits/pixel
Mode 3a : 1600x1200, 8 bits/pixel
Mode 3c : 1280x800, 8 bits/pixel
Mode 41 : 640x480, 16 bits/pixel
Mode 43 : 800x600, 16 bits/pixel
Mode 45 : 1024x768, 16 bits/pixel
Mode 49 : 1280x1024, 16 bits/pixel
Mode 4b : 1600x1200, 16 bits/pixel
Mode 4d : 1280x800, 16 bits/pixel
Mode 50 : 640x480, 32 bits/pixel
Mode 52 : 800x600, 32 bits/pixel
Mode 54 : 1024x768, 32 bits/pixel
Mode 58 : 1280x1024, 32 bits/pixel
Mode 5a : 1600x1200, 32 bits/pixel
Mode 5c : 1280x800, 32 bits/pixel

I even tried adding:

ModeLine        "1280x1024" 108.0 1280 1328 1440 1688 1024 1025 1028 1066"

to Monitor section of xorg.conf, but it didn't help.

My Screen section of xorg.conf now states:

Section "Screen"
         Identifier      "Screen Internal"
         Device          "Intel945GM Internal"
         Monitor         "Laptop LCD"
         DefaultDepth    24
         SubSection "Display"
                 Depth           24
                 Modes           "1280x800" "1024x768" "1280x1024"
                 Virtual         1280 1024
         EndSubSection
EndSection

Tnx for any help, I'm clueless...

	-gkresic.