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diff --git a/README.txt b/README.txt new file mode 100644 index 0000000..7d6f782 --- /dev/null +++ b/README.txt @@ -0,0 +1,174 @@ +915resolution +============= + +This software changes the resolution of an available vbios mode. + +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. + +915resolution supports the 845G, 855GM, 865G, 915G, 915GM, 945G, and 945GM chipsets. + + +Usage +----- + +You must be root to launch it. + + Usage: 915resolution [-l] [mode X Y] [bits/pixel] + Options: + -l display the modes found into the vbios + + Note that bits per pixel is optional. If you do specify anything, + then the original value will be preserved. + + +Installing +---------- + +$ make +$ su +# make install + +Setting +------- + + 1. Switch to root + # su + + 2. Display the available resolutions : + + # 915resolution -l + Intel 800/900 Series VBIOS Hack : version 0.5.2 + + Chipset: 915GM + BIOS: TYPE 1 + Mode Table Offset: $C0000 + $269 + Mode Table Entries: 36 + 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 : 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 + Mode 60 : 1280x770, 8 bits/pixel + Mode 61 : 1280x770, 16 bits/pixel + Mode 62 : 1280x770, 32 bits/pixel + Mode 63 : 512x771, 8 bits/pixel + Mode 64 : 512x771, 16 bits/pixel + Mode 65 : 512x771, 32 bits/pixel + + 3. I personnaly decided to overwrite the 1280x1024 resolution + because I don't use it : + + # 915resolution 38 1280 800 + + 4. Now the bios reports a 1280x800 resolution : + + # 915resolution -l + Intel 800/900 Series VBIOS Hack : version 0.5.2 + + Chipset: 915GM + BIOS: TYPE 1 + Mode Table Offset: $C0000 + $269 + Mode Table Entries: 36 + 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 : 1280x800, 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 : 1280x800, 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 : 1280x800, 32 bits/pixel + Mode 5a : 1600x1200, 32 bits/pixel + Mode 5c : 1920x1440, 32 bits/pixel + Mode 60 : 1280x770, 8 bits/pixel + Mode 61 : 1280x770, 16 bits/pixel + Mode 62 : 1280x770, 32 bits/pixel + Mode 63 : 512x771, 8 bits/pixel + Mode 64 : 512x771, 16 bits/pixel + Mode 65 : 512x771, 32 bits/pixel + + 5. On some machines 24 bits per pixel is the desired resolution. + An alternate invocation to achieve this would be: + + # 915resolution 38 1280 800 24 + + 6. My xorg.conf has the following screen definition : + + Section "Screen" + Identifier "Screen 1" + Device "device" + Monitor "LCD" + DefaultDepth 16 + + Subsection "Display" + Depth 16 + Modes "1280x800" + EndSubsection + EndSection + + 7. 915resolution must run before the X server is started. So I don't need to + do this every time I put it in my startup scripts. Where these scripts + are very from distribution to distribution. I'm running SUSE 9.2, so I + put the definition in /etc/init.d/boot.local: + + #! /bin/sh + # + # Copyright (c) 2002 SuSE Linux AG Nuernberg, Germany. All rights reserved. + # + # Author: Werner Fink <werner@suse.de>, 1996 + # Burchard Steinbild, 1996 + # + # /etc/init.d/boot.local + # + # script with local commands to be executed from init on system startup + # + # Here you should add things, that should happen directly after booting + # before we're going to the first run level. + # + + /usr/bin/915resolution 38 1280 800 + + 8. Start up the X server + # startx + + +Disclaimer +---------- + +915resolution 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. + + Steve Tomljenovic + stomljen at yahoo dot com |