Did this issue start happening after an update/upgrade? ... No, i just got this laptop (second hand) and promptly installed Lubuntu. It was made in 2013. It uses a hybrid graphics system. ... Since dimming works at the BIOS screen, this seems to be a software issue.
Was there a prior kernel version where you were not having this particular problem? ... Haven't tested prior versions. Willing to do so. Tested with 4.11 RC8 and the problem is still present. When installing with dpgk, the following warnings were returned: update-initramfs: Generating /boot/initrd.img-4.11.0-041100rc8-generic W: Possible missing firmware /lib/firmware/i915/kbl_huc_ver02_00_1810.bin for module i915 W: Possible missing firmware /lib/firmware/i915/bxt_huc_ver01_07_1398.bin for module i915 W: Possible missing firmware /lib/firmware/i915/skl_huc_ver01_07_1398.bin for module i915 Thanks for your help. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1685620 Title: Screen flashes continuously when brightness set to lower than 100% using fn keys on Samsung NT200B5C-STW/R laptop running Lubuntu 17.04 x64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1685620/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
