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-X, which is subscribed to xorg in 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 _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

