Display -- ATI Radeon 9000, 1280x768 LCD display

By default, Xubuntu uses a VESA driver. This can be seen in /etc/X11/xorg.conf under `Section Device', `Driver = vesa'.

Xubuntu provides a way to re-configure the driver `sudo dpkg-reconfigure xserver-xorg'. This decides that the Muramasa requires the ATI driver and has a 1280x768 display. Unfortunately, despite the lack of warning to be found in /var/log/Xorg.0.log, the resulting configuration file does not work.

What I did was use the `Driver ``radeon'' ' driver under Section `Device'. Under Section ``Screen'' I then manually added ``1280x768'' to the ``Modes'' lines. No other modes work. Under Section ``monitor'' I place `Displaysize 158 95'. However. this worked only a few times before it mysteriously stopped working. Remove or comment out the DRI option in the `modules' section of xorg.conf. Here is my complete xorg.conf.

# /etc/X11/xorg.conf (xorg X Window System server configuration file)

#

# This file was generated by dexconf, the Debian X Configuration tool, using

# values from the debconf database.

#

# Edit this file with caution, and see the /etc/X11/xorg.conf manual page.

# (Type man /etc/X11/xorg.conf at the shell prompt.)

#

# This file is automatically updated on xserver-xorg package upgrades *only*

# if it has not been modified since the last upgrade of the xserver-xorg

# package.

#

# If you have edited this file but would like it to be automatically updated

# again, run the following command:

# sudo dpkg-reconfigure -phigh xserver-xorg

Section Files

 FontPath /usr/share/X11/fonts/misc

 FontPath /usr/share/X11/fonts/cyrillic

 FontPath /usr/share/X11/fonts/100dpi/:unscaled

 FontPath /usr/share/X11/fonts/75dpi/:unscaled

 FontPath /usr/share/X11/fonts/Type1

 FontPath /usr/share/X11/fonts/100dpi

 FontPath /usr/share/X11/fonts/75dpi

 # path to defoma fonts

 FontPath /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType

EndSection

Section Module

 Load i2c

 Load bitmap

 Load ddc

 # Load dri # possibly some error in Xorg 7.0 results in this failing intermittently

 Load extmod

 Load freetype

 Load glx

 Load int10

 Load type1

 Load vbe

EndSection

Section InputDevice

 Identifier Generic Keyboard

 Driver kbd

 Option CoreKeyboard

 Option XkbRules xorg

 Option XkbModel pc105

 Option XkbLayout jp

 Option XkbVariant jp106

EndSection

Section InputDevice

 Identifier Configured Mouse

 Driver mouse

 Option CorePointer

 Option Device /dev/input/mice

 Option Protocol ExplorerPS/2

 Option ZAxisMapping 4 5

 Option Emulate3Buttons true

EndSection

Section Device

 Identifier ATI Technologies, Inc. Radeon Mobility M6 LY [Radeon Mobility 9000]

 Driver radeon

 BusID PCI:1:0:0

EndSection

Section Monitor

 Identifier Generic Monitor

 Option DPMS

 HorizSync 28-33

 VertRefresh 43-72

 DisplaySize 158 95

EndSection

Section Screen

 Identifier Default Screen

 Device ATI Technologies, Inc. Radeon Mobility M6 LY [Radeon Mobility 9000]

 Monitor Generic Monitor

 DefaultDepth 24

 SubSection Display

 Depth 1

 Modes 1280x768

 EndSubSection

 SubSection Display

 Depth 4

 Modes 1280x768

 EndSubSection

 SubSection Display

 Depth 8

 Modes 1280x768

 EndSubSection

 SubSection Display

 Depth 15

 Modes 1280x768

 EndSubSection

 SubSection Display

 Depth 16

 Modes 1280x768

 EndSubSection

 SubSection Display

 Depth 24

 Modes 1280x768

EndSubSection

EndSection

Section ServerLayout

 Identifier Default Layout

 Screen Default Screen

 InputDevice Generic Keyboard

 InputDevice Configured Mouse

 EndSection

 Section DRI

 Mode 0666

EndSection

I tried to download ATI's own drivers, the `fglrx' package. Unfortunately, this driver failed to open a screen, complaining that no devices were detected, despite detecting that PCI:1:0:0 was the correct bus. Adding `fglrx' to the end of /etc/modules did not help.