Hi guys, I've fixed this situation with a workaround (please forgive my bad english) on fedora and for sure the same can be applied with ubuntu. in the specific:
i installed brightnessctl and discovered the max value for light, in my case 24242. after that, i create a shortcut on keyboard (used kdeplasma in my case) and applied the f6 button (my laptop is thinkpad t14 gen1) the command brightnessctl set 24242. now, finally, when i unplug the external dock station with only pressing f6 i will see the internal screen correctly. i hope that this will help someone -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308674 Title: [Lenovo ThinkPad X220] kernel 3.13 i915 brightness settings broken when going from docked -> undocked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1308674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
