Installing Ubuntu/Breezy on a ThinkPad T42
Contents
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:
$ 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 > $DEVICE/device/rf_kill;
echo 1
fi
fi
done
Xorg
Relevant part:
Section "InputDevice" Identifier "Configured Mouse" Driver "mouse" Option "CorePointer" Option "Device" "/dev/input/mice" Option "Protocol" "ImPS/2" Option "Emulate3Buttons" "true" Option "EmulateWheel" "true" Option "EmulateWheelButton" "2" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" Identifier "Synaptics Touchpad" Driver "synaptics" Option "SendCoreEvents" "true" Option "Device" "/dev/psaux" Option "Protocol" "auto-dev" Option "HorizScrollDelta" "0" EndSection Section "Device" Identifier "ATI Technologies, Inc. Radeon Mobility 7500 (M7 LW)" Driver "radeon" BusID "PCI:1:0:0" Option "DynamicClocks" "off" Option "AGPMode" "4" Option "AGPFastWrite" "yes" EndSection
Initng
Very great initiative for optimizing the boot process. Initng
Dep packages can be found: http://alioth.debian.org/projects/pkg-initng/
Installation: sudo dpkg -i initng_0.3.3-2_i386.deb
To run nice a few things and scripts need modification as follows:
Kernel options
To enable initng an option must be appended to the kernel load command in grub.
kernel /vmlinuz-2.6.12-9-686 root=/dev/hda9 ro quiet splash video=radeonfb init=/sbin/initng
Runlevel
system daemon/acpid daemon/dbus daemon/hald daemon/vixie-cron daemon/ifplugd system/alsasound system/speedstep system/laptop-mode daemon/syslogd daemon/klogd daemon/gdm daemon/hpiod daemon/cupsd daemon/powernowd
Scripts
dbus.i
daemon/dbus.i has a few faults, on Ubuntu it is "dbus" not "dbus-1"!
service daemon/dbus {
need = system/initial system/mountfs system/bootmisc
pid_file = /var/run/dbus/pid
daemon {
DAEMON=/usr/bin/dbus-daemon
NAME=dbus
DAEMONUSER=messagebus
PIDDIR=/var/run/dbus
PIDFILE=$PIDDIR/pid
DESC="system message bus"
if [ -e /etc/default/dbus ]; then
. /etc/default/dbus
fi
if [ ! -d $PIDDIR ]; then
mkdir -p $PIDDIR
chown $DAEMONUSER $PIDDIR
chgrp $DAEMONUSER $PIDDIR
fi
if [ -e $PIDFILE ]; then
PIDDIR=/proc/$(cat $PIDFILE)
if [ -d ${PIDDIR} -a "$(readlink -f ${PIDDIR}/exe)" = "${DAEMON}" ]; then
echo "$DESC already started; not starting."
else
echo "Removing stale PID file $PIDFILE."
rm -f $PIDFILE
fi
fi
echo -n "Starting $DESC: "
$DAEMON --system $PARAMS
echo "$NAME."
}
}
hald.i
service daemon/hald {
need = system/initial system/mountfs daemon/dbus
# use = daemon/acpid
daemon {
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/hald
PIDDIR=/var/run/hal
NAME=hal
DAEMONUSER=hal
DESC="Hardware abstraction layer"
if [ -f /etc/default/hal ] ; then
. /etc/default/hal
fi
if [ ! -d $PIDDIR ]; then
mkdir -p $PIDDIR
chown $DAEMONUSER:$DAEMONUSER $PIDDIR
fi
echo -n "Starting $DESC: "
$DAEMON --daemon=no $DAEMON_OPTS
echo "$NAME."
}
}
gdm.i
daemon/gdm.i, to add locale support to the GDM login screen:
service daemon/gdm {
need = system/initial system/mountfs system/hostname net/lo system/modules system/bootmisc
use = daemon/xfs system/static-modules system/coldplug system/netmount
# daemon = /usr/sbin/gdm
# daemon = /usr/bin/gdm
# daemon_args = -nodaemon
daemon {
PATH=/bin:/sbin:/usr/bin:/usr/sbin
if [ -r /etc/default/gdm ]; then
. /etc/default/gdm
if [ -z "$LANG" ]; then
:
else
export LANG
fi
fi
gdm -nodaemon
}
#pid_file = /var/run/gdm.pid
}
Helpfull tools
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:
$ sudo rovclock -c 100 -m 120
noflushd
Noflushd is a daemon that spins down disks that have not been read from
after a certain amount of time, and then prevents disk writes from
spinning them back up. It's targeted for laptops but can be used on any
computer with IDE disks. The effect is that the hard disk actually spins
down, saving you battery power, and shutting off the loudest component of
most computers.
$ sudo apt-get noflushd
ifplugd
ifplugd is a daemon which will automatically configure your
ethernet device when a cable is plugged in and automatically
unconfigure it if the cable is pulled. This is useful on laptops with
onboard network adapters, since it will only configure the interface
when a cable is really connected.
$ sudo apt-get ifplugd
/etc/default/ifplugd:
INTERFACES="eth0" HOTPLUG_INTERFACES="eth0" ARGS="-q -f -u0 -d10 -w -I -b" SUSPEND_ACTION="stop"
Known problems
|
TODO
|
List of bugs from kernel, Xorg and Ubuntu
|
