Lenovo ThinkPad X201
The X201 is a 4-core subnotebook produced by Lenovo. See Thinkwiki for more information.
Arch installs and runs flawlessly. Some specials features need tweaks, though.
Xorg should automatically load the intel driver without any configuration. Have a look at Intel if something is wrong.
As of the first quarter of 2013 there seems to be an issue related to Mesa 9.0, described at the freekdesktop Bugtracker (#59593), that makes the integrated Intel Ironlake Mobile GPU crash and will only resolve after a reboot.
Prevent LID switch from waking up
w /proc/acpi/wakeup - - - - LID
To make fbsplash work, i915 has to be added to the modules array in mkinitcpio.conf:
Thinkpad Fan Control contains instructions to install tpfand as a custom replacement for hardware (bios-) fan control.
tpfan-admin and adjust the settings (by clicking on the sensor's graph). You should split the graph (via context menu) and set the fan to full-speed when the sensor reaches, say, 65 °C. You may also edit the config file directly.
One can use Cpufrequtils for more information.to control frequency scaling; see
Undervolting is not possible with the intel core iX cpu.
Bootloader kernel options
Add these kernel options to your bootloader's config file to make use of power saving mechanismens which are turned off by default because of reported instabilities. For me, they do a great job on my X201.
GRUB_CMDLINE_LINUX_DEFAULT="[...] i915_enable_rc6=1 i915_enable_fbc=1"
Update grub.cfg afterwards:
grub-mkconfig -o /boot/grub/grub.cfg
No speaker output
Try pressing the mute button (beside the Escape key). See this article for details.
Backlight keys not working
Try booting with the following kernel parameter: