Lenovo ThinkPad X220

Hardware	PCI/USB ID	Working?
Touchpad		Yes
TrackPoint		Yes
Keyboard		Yes
Video	`8086:0126`	Yes
Webcam	`04f2:b217`	Yes
Ethernet	`8086:1502`	Yes
Bluetooth		Yes
SD-card reader	`1180:e823`	Yes
Audio	`8086:1c20`	Yes
Wireless	`8086:0085`	Yes
Fingerprint Reader	`147e:2016`	Yes

Installation

The X220 can not boot from a GPT disk in Legacy BIOS mode, it is necessary to either switch to UEFI booting or create a MBR Partition Table.

Firmware

fwupd does not support this device yet.

To update the firmware on the device, get the latest bootable CD and follow the steps in Flashing BIOS from Linux#Bootable optical disk emulation.

Power management

After waking up the device from suspend, the device might get stuck in a reboot loop. This can be caused by the EFI storage getting too full. To free up some space, clear the pstore:

# mkdir -p /dev/pstore
# mount -t pstore pstore /dev/pstore

Nothing important should be here, but check first anyway:

# ls /dev/pstore

Then empty the directory:

# rm /dev/pstore/*

Next some EFI variables. These are used/created by pstore, but everyone should have had them even though the pstore data was deleted using the above commands:

# rm /sys/firmware/efi/efivars/dump-type0-*

Microphone

The internal microphone can generate a lot of static or hissing, the workaround is to mute the right mic input channel.

Tip: Noise cancellation is preferred: it also mutes the internal fans. See the pulseaudio documentation for more information.

Touchpad

If the touchpad is jumpy/imprecise, create the following configuration:

/etc/udev/hwdb.d/90-libinput-x220-touchpad-fw81.hwdb

touchpad:i8042:*
 LIBINPUT_MODEL_LENOVO_X220_TOUCHPAD_FW81=1

Then follow the steps at Map scancodes to keycodes#Using udev.

See Fedora bug #1264453 for more details.

Function keys

Key	Visible?¹	Marked?²	Effect
`ThinkVantage`	Yes	Yes	`KEY_PROG1`
`Audio mute`	Yes	Yes	`KEY_MUTE`
`Mic mute`	Yes	Yes	`KEY_F20`
`Volume down`	Yes	Yes	`KEY_VOLUMEDOWN`
`Volume up`	Yes	Yes	`KEY_VOLUMEUP`
`Fn+F1`	Yes	No	`KEY_FN_F1`
`Fn+F2`	Yes	Yes	`KEY_COFFEE`
`Fn+F3`	Yes	Yes	`KEY_BATTERY`
`Fn+F4`	Yes	Yes	`KEY_SLEEP`
`Fn+F5`	Yes	Yes	`KEY_WLAN`
`Fn+F6`	Yes	Yes	`KEY_CAMERA`
`Fn+F7`	Yes	Yes	`KEY_SWITCHVIDEOMODE`
`Fn+F8`	Yes	Yes	`KEY_F21`
`Fn+F12`	Yes	Yes	`KEY_SUSPEND`
`Fn+Home`	Yes	Yes	`KEY_BRIGHTNESSUP`
`Fn+End`	Yes	Yes	`KEY_BRIGHTNESSDOWN`
`Fn+Space`	Yes	Yes	`KEY_FULL_SCREEN`
`Fn+Left`	Yes	Yes	`KEY_PREVIOUSSONG`
`Fn+Right`	Yes	Yes	`KEY_NEXTSONG`
`Fn+Up`	Yes	Yes	`KEY_STOPCD`
`Fn+Down`	Yes	Yes	`KEY_PLAYPAUSE`

The key is visible to xev and similar tools
The physical key has a symbol on it, which describes its function