Hi there, I fear that I do not have the time to do such in-depth debugging atm. As I said, I used the latest kernel with my previous 17.10 install without this problem, and it occurred with the first kernel of the 18.04 release. I know that it would be easier for you to know the specific kernel version where the digression was introduced, but maybe it would be possible to have a look at the old bug here (https://bugs.freedesktop.org/show_bug.cgi?id=64332) and take a look at the specific files which got patched back then to find the digression. I'm just a php coder, so my knowledge about kernel development is too limited to take a look into it myself.
** Bug watch added: freedesktop.org Bugzilla #64332 https://bugs.freedesktop.org/show_bug.cgi?id=64332 -- 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/xorg/+bug/1771204/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
