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855resolution
=============
This software changes the resolution of an available vbios mode.
This software is only tested on my Dell 510m with a BIOS A04, to
get the 1400x1050 resolution.
It patches only the RAM version of the video bios so the new resolution
is loose each time you reboot. If you want to set the resolution each
time you reboot and before to launch X, use your rc.local, local.start ...
file of your Linux version.
Usage
-----
You must be root to launch it.
Usage: 855resolution [-l] [-f bios_type] [mode X Y]
Options:
-l display the modes found into the vbios
-f skip the automatic VBIOS detection by forcing a VBIOS type
Installing
----------
$ make
$ su
# make install
Setting
-------
1. Display the available resolutions :
# 855resolution -l
Chipset: 855GM
VBIOS type: 1
BIOS Version: 3240
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 : 1920x1440, 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 : 1920x1440, 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 : 1920x1440, 32 bits/pixel
2. I personnaly decided to overwrite the 1920x1440 resolution
because I don't use it :
# 855resolution 3c 1400 1050
3. Now the bios reports a 1400x1050 resolution :
# 855resolution -l
Chipset: 855GM
VBIOS type: 1
BIOS Version: 3240
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 : 1400x1050, 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 : 1400x1050, 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 : 1400x1050, 32 bits/pixel
4. My XF86Config has the following screen definition :
Section "Screen"
Identifier "Screen 1"
Device "device"
Monitor "LCD"
DefaultDepth 24
Subsection "Display"
Depth 24
Modes "1400x1050"
EndSubsection
EndSection
5. $ startx
Disclaimer
----------
855resolution is free to use, distribute or modify. But please mention
my name and the names of the respective contributors.
I tried to make the programs as safe as possible but obviously I can't
guarantee that they'll work for you. So don't blame me if something bad
happens.
Alain Poirier
alain.poirier1 at wanadoo.fr
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