Lenovo ThinkPad X220

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Revision as of 13:02, 3 February 2014 by Hoschi (Talk | contribs) (added warning, rationale: i own a x220 since december 2013 and never had heat releated problems)

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Notes: please use the first argument of the template to provide more detailed indications. (Discuss in Talk:Lenovo ThinkPad X220#)



The graphic card is supported by the xf86-video-intel driver package from the extra repository. The Xorg server makes use of this automatically. There's no need for a Xorg configuration file.

pacman -S xf86-video-intel


The X220 cannot boot from a GPT disk with legacy BIOS, so either use an MBR disk or setup UEFI.



Warning: This is quite old and shouldn't be applied on up-to-date systems without actual problems. )

According to a forum post you should set some power saving options in /etc/modprobe.d/modprobe.conf or add them to your kernel line in your menu.lst. We use rc6=7 for deepest sleep mode.

options i915 modeset=1
options i915 i915_enable_rc6=7
options i915 i915_enable_fbc=1 
options i915 lvds_downclock=1

As well you could suffer of Kernel Power Regressions.

Reboot loop after resume from suspend!

This can be caused by the EFI storage getting too full. Run the following commands as root to free up some space.

 # First clear the pstore
 mkdir -p /dev/pstore
 mount -t pstore pstore /dev/pstore
 ls /dev/pstore # <- Nothing important should be here, but check first anyway
 rm /dev/pstore/*
 # Next some EFI variables. These are used/created by pstore, but I've had them even though 
 #I deleted the pstore data using the above commands. YMMV.
 rm /sys/firmware/efi/efivars/dump-type0-*

This information was taken from the Lenovo forums

See also