915resolution for Debian
------------------------

915resolution changes the resolution of an available vbios mode.

1. First, you need to check available modes by:

# 915resolution -l

2. You will get a mode list such as:

Intel 800/900 Series VBIOS Hack : version 0.4.7

Chipset: 915GM
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 : 1280x768, 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 : 1280x768, 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 : 1280x768, 32 bits/pixel

3. Write the mode number and resolution which you want to use to
   /etc/default/915resolution. For example:

MODE=3c
XRESO=1400
YRESO=1050

# optional setting
BIT=32

4. Reboot or run "/etc/init.d/915resolution start" by hand.

5. To use specified resolution, you need to modify your X configuration
   file (If you use Xorg, it's /etc/X11/xorg.conf)

SubSection "Display"
    Depth           24
    Modes           "1400x1050" "1024x768" "800x600" "640x480"
EndSubSection




915resolution with suspend/resume function:

If you are planning to use the suspend/resume mechanism and you are using a 
video mode that requires to run 915resolution, it's quite possible that your 
video card requires you to run 915resolution also on resume. If you use the 
hibernate package there is an option to call 915resolution on resume.
If you want to use it just activate it in the file "etc/hibernate/common.conf" .
There is an uncommented line called "# Runi915resolution yes" .


  -- Steffen Joeris <steffen.joeris@skolelinux.de>, Thu, 15 Jun 2006 17:18:41 +0200