I have similar problem on Dell XPS 15 (l521x). It is not quick and it seems that for every key-press it's trying to change brightness twice. I'll attach evtest and udev monitor outputs.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1626651 Title: brightness keys are handled slower in Yakkety than Xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/1626651/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
