I also have a ThinkPad X220 that is exhibiting the same symptoms. It is running the latest BIOS. (1.39). I am running kernel 3.13.0-35-generic #62~precise1-Ubuntu and xserver-xorg-video-intel-lts-trusty 2:2.99.910-0ubuntu1~precise1. I moved the drive from a ThinkPad X201s (Core i7 but previous generation of CPU and GPU.) Everything was working perfectly with the X201, so this looks to be an X220-specific bug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1345499 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/1345499/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
