Hmm - so I'm not sure what's going on here. I started bisecting v4.1 .. v4.2.8 and I couldn't find a working version in 6-7 bisects and when I checked rest of the commit set in the bisect, it couldn't find any commits to drivers/gpu?!
So I decided to test Ubuntu mainline kernels a little bit more and the current status is: Broken: linux-image-4.1.3-040103-generic_4.1.3-040103.201507220129_amd64.deb Working: linux-image-4.1.4-040104-generic_4.1.4-040104.201508031330_amd64.deb So probably something was fixed and in a short time broken again during the v4.2 development cycle?! And probably I should check with other connectors too, as I currently run the monitor via DVI => VGA connector. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1643843 Title: Distorted colours after suspend / resume cycle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1643843/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs