Can you test the following kernels to see when this bug was introduced upstream:
4.4.41: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.40/ 4.4.41: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.41/ 4.4.42: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.42/ 4.4.43: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.43/ 4.4.44: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.44/ You don't have to test every kernel, just up until the kernel that first has this bug. Thanks in advance! ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Status: New => Triaged ** Changed in: linux (Ubuntu) Status: Confirmed => Triaged ** Changed in: linux (Ubuntu Xenial) Importance: Undecided => Medium ** Tags removed: needs-bisect ** Tags added: performing-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1667323 Title: Backlight control does not work and there are no entries in /sys/class/backlight To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667323/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
