Installing Ubuntu/Breezy on a ThinkPad T42

Generel installation

Here comes installation instructions for Ubuntu Breezy Badger on T42 2374-ZEP.

Get a copy of Ubuntu from UbuntuLinux.org.

Kernel support

How to get the correct kernel: {{{2}}} sudo apt-get linux-i686

Kernel modules

TODO	Load the different kernel modules, and their configuration

Importent to turn off dynamicClocks in radeonfb in kernels before 2.6.14: /etc/modprobe.d/radeonfb.modprobe:

options radeonfb default_dynclk=-1

ibm_acpi module:

Turning on experimental features: /etc/modprobe.d/ibm_acpi.modprobe:

options ibm_acpi hotkey=enable,0xff9f experimental=1

Starting with wireless off: /etc/modprobe.d/ipw2100.modprobe:

options ipw2100 disable=1

ACPI

TODO	Hibernate, suspend, buttons, lid, speedstep

Modification to turn on wireless: /etc/acpi/wireless.sh:

#!/bin/bash
# Find and enable/disable wireless devices

for DEVICE in /sys/class/net/*; do
    if [ -d $DEVICE/wireless ]; then
# $DEVICE is a wireless device. Check if it's powered on:
	if [ `cat $DEVICE/device/power/state` = 0 ]; then
# It's powered on. Switch it off.
	    echo -n 3 > $DEVICE/device/power/state;
	    echo 0
	else
# It's powered off. Switch it on.
	    echo -n 0 > $DEVICE/device/power/state;
	    echo -n 0 > $DEVICE/device/rf_kill;
	    echo 1
	fi
    fi
done

Xorg

Relevant part:

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"Emulate3Buttons"	"true"
	Option		"EmulateWheel"		"true"
	Option		"EmulateWheelButton"	"2"
	Option		"ZAxisMapping"		"4 5"
EndSection

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"		"/dev/psaux"
	Option		"Protocol"		"auto-dev"
	Option		"HorizScrollDelta"	"0"
EndSection

Section "Device"
	Identifier	"ATI Technologies, Inc. Radeon Mobility 7500 (M7 LW)"
	Driver		"radeon"
	BusID		"PCI:1:0:0"
	Option		"DynamicClocks"	"off"
	Option		"AGPMode"	"4"
	Option		"AGPFastWrite"	"yes"
EndSection

ATTENTION!

Options DynamicClocks "on" may hang your machine

Initng

TODO	Speed up the boot/shutdown process with Initng

Very great initiative for optimizing the boot process. Initng

Dep packages can be found: http://alioth.debian.org/projects/pkg-initng/

Helpfull tools

TODO	rovclock among others

Rovclock

Utility to overclock and underclock the ATI radeon chip. Can be used to underclock to reduce power, especialy when on batteries.

Get it from: http://www.hasw.net/linux/

Stable clock speeds: Core: 100MHz Memory: 120Mhz for LCP only, 180Mhz when using DVI out on port replicator.

Ex: {{{2}}} sudo rovclock -c 100 -m 120

Known problems

TODO	List of bugs from kernel, Xorg and Ubuntu