I just installed the 4.15.0-10 kernel that you provided and rebooted. The colours didn't improve; the same artefacts and banding still appear like they did on kernel 4.13.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1749420 Title: Colour banding and artefacts appear system-wide on an Intel HD Graphics 4400 system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs