The bug happens with the latest 4.4 upstream stable kernel. How I tested:
I reach: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.53 and downloaded: linux-headers-4.4.53-040453_4.4.53-040453.201703120131_all.deb linux-image-4.4.53-040453-generic_4.4.53-040453.201703120131_amd64.deb linux-headers-4.4.53-040453-generic_4.4.53-040453.201703120131_amd64.deb Then I run: dpkg -i linux-* >From grub menu I choose the 4.4.53 kernel. -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
