This issues was before upgrade to current Ubuntu version. There were no kernel that work properly with this stuff. I've installed kernel 4.9.0-040900rc1-generic. And miracle happen. Brightness hotkeys works and do brightness change. acpi_listen shows "button/lid LID close" and "button/lid LID open". Suspend didn't happen when I close the lid, but it is another story.
** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Tags added: kernel-fixed-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1634742 Title: No button/lid events, no brightness hotkeys To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1634742/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs