Lenovo ThinkPad T550
Contents
Installation
Use the Installation guide.
Configuration
Backlight
The following kernel options are needed for ACPI/Backlight:
acpi_osi=Linux acpi_backlight=vendor video.use_native_backlight=1
Fn Keys
Function/Fn keys do not work without the FnLock on. To enable the FnLock, press Fn+Esc
. The green light on the Fn
key should turn on. Now you can use the Fn
key like normal (i.e., with FnLock on Fn+F1
would equate to a XF86AudioMute
to be handled by X/WM/whathaveyou).
Suspend
Add the following kernel parameter in order to combat freeze/panic after suspend-to-ram:
i915.enable_rc6=0
Video Drivers
Follow Intel graphics for installing the GPU driver. The T550 suffers from Intel graphics#Loss of horizontal sync when switching TTYs[broken link: invalid section], but changing the Graphics Acceleration to UXA fixes it.
Issues
DisplayPort Extenders
The T550 is only able to drive three displays at once. If you are using a one-to-three DisplayPort adapter, you will need to disable the laptop display (xrandr --output eDP1 --off
) in order to use three external displays. Expect a heavy delay (1-2 seconds) while adjusting displays via DisplayPort with xrandr
.
USB
Enabling "Always-On USB" in the BIOS seems to make the forward-most USB port on the right side of the laptop (the 'Charging Port') unusable in Linux - disabling this feature in BIOS re-enables the port.