Installing Gentoo on a ThinkPad X40

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kernel compilation

ipw2200 driver (intel wireless nic)

don't forget to compile it as a module :

zen kernel

tuxonice compression

cf :
select lzo compression in "make menuconfig"
change tuxonice.conf accordingly


laptop_mode and other power management tips

Fan Control :
(note that if Fan Control doesn't seem to work anymore after a system update you may need to run pwmconfig again and select manual controls by answering "y" at the first question)

CPU Undervolting

I've used phc with the hagan voltages found on : which translate to the following phc vids :

x40 ~ # cat /sys/devices/system/cpu/cpu0/cpufreq/phc_vids 
14 12 10 8 6 4 2 0 

Note : some versions of linux 2.6.34 need to be patched for phc_intel to be loadable :

The packages sys-power/phctool and sys-power/phc-intel with support up to 2.6.36 were included in the main tree.
(exploration notes : the phc kernel patch is included in sys-kernel/zen-sources see also : and )

x11 with x11-drivers/xf86-video-intel-2.9.1 crashing the machine

Apparently solved with x11-drivers/xf86-video-intel-2.11.0 :

External Sources