I was able to identify the offending commits on 16.04 and it was reported to Intel: https://bugs.freedesktop.org/show_bug.cgi?id=106943
** Bug watch added: freedesktop.org Bugzilla #106943 https://bugs.freedesktop.org/show_bug.cgi?id=106943 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1771204 Title: Horizontal lines on Samsung Laptop np900x3f after Update to 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1771204/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs