I tried those but it is not a Thinkpad. What is happening is the drivers for intel backlight are not loading. That is why adding that file works. I don't know who it needs to be reported to I will ask my team as it looks not to be an issue with the kernel but with X11.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1244645 Title: Brightness is at 100 percent and will not change To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1244645/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs