Thinkpad X220

These are a bunch of useful programs if you own a thinkpad X220.
This guide is done in collaboration with rvbg.eu.

Install Gfx drivers

yay -S xf86-video-intel

Fan controlling

• yay -S lm_sensors thinkfan - Install the needed utilities

• sudo modprobe thinkpad_acpi - After that load the kernel module thinkpad_acpi

• sudo cp /usr/share/doc/thinkfan/examples/thinkfan.conf.simple /etc/thinkfan.conf
  Copy and configure the config file

• systemctl start thinkfan - Start the thinkfan service

• sudo thinkfan -n - Check the output

systemctl enable thinkfan.service - enable the thinkfan service

Change brightness via keyboard

• sudo vim /boot/loader/entries/arch.conf - Open the bootloader configuration

• Go to the options line.
  Append the following.
  acpi_osi="!Windows 2012"

• shutdown -r now - Reboot the system

Activate battery options

• yay -S tlp - Install the service
• yay -S acpi_call - Enables battery charging stop at given capacity
• sudo vim /etc/tlp.conf - Open the battery options
• Change the following lines

START_CHARGE_THRESH_BAT0=80
STOP_CHARGE_THRESH_BAT0=90

The battery will start charging at 80 percent and stop charging at 90.

• sudo tlp start - Start service and save changed options
• sudo systemctl enable tlp.service - Enable the service

Setup Thinkpad Dock

• yay -S dockd - Install the docking service
• yay -S xrandr arandr - Instll multimonitor tools
• Dock the system
• arandr - Setup the monitor configuration
• dockd --config docked - Save the changes (has to maybe be stopped by
  CTRL + C)
• Undock the system
• arandr - Setup the monitor configuration
• dockd --config undocked - Save the changes (has to maybe be stopped by
  CTRL + C)
• systemctl enable acpid - Activate ACPI listener
• systemctl start acpid - Start ACPI listener

Scripts to change configuration at docking/undocking

• For the docked configuration use vim /etc/dockd/dock.hook
• For the undocked configuration use vim /etc/dockd/undock.hook