Lenovo ThinkPad T550
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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, 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.