You are not logged in.

#1 2022-09-13 20:12:58

Registered: 2022-09-13
Posts: 1

ThinkPad X220 UltraBase - ext. monitor detected only on open lid-boot

Hello everyone.

I have an annoying problem with my personal setup. I use a ThinkPad X220 docked in a so called UltraBase. The base (dock) has a DP as well as a VGA port for hooking up external monitors. It also has a power-switch, so that you may turn on your system with the laptop docked with a closed lid. Booting like this is what I prefer, and it worked just like you'd expect when using the VGA output for my old monitor. However, I recently changed monitors to a model which uses DisplayPort (Dell E2216H). Now it works too. Kind of. But there is a problem - I have to boot the system with the laptop opened up, and both monitors (laptop & external) will display the same. Once Arch is finished loading, I may close the lid and use only the DP output, like I want to. If I boot like before, lid closed, it will output the ThinkPad logo and then the Grub menu, but as it gets to the standard white-on-black login screen on Arch (I guess when the OS is finished loading), the monitor goes black...

Anyone got any ideas on how to solve this?

Thank you,


Board footer

Powered by FluxBB