I have a Lenovo ThinkPad t460s here. It is the NVMe PCI SSD version. The CPU is i7 6600U (Skylake 6th generation) with Intel HD 520.

About a month ago (beginning March 2016), I installed Ubuntu GNOME 16.04 Beta 1. Everything, besides the known issues (Touchpad Physical Button Problems, Lid Close Problems) seemed to work fine.

At this time, I was using the kernel version 4.4.0-7. A few days later, there were several kernel updates (4.4.0-12, 4.4.0-14 and 4.4.0-15). Suddenly, I was experiencing screen flickering. It was really ugly, and I couldn't work anymore. So, I did downgrade the kernel version to 4.4.0-7 and put it on hold (via apt-mark hold). The screen flickering disappeared. Now, I have some graphic artifacts when browsing (firefox, chromium). I think I managed to get rid of these by disabling "smooth scrolling" options.

Is anyone else experiencing similar issues? Or has anyone already found a solution to this problem?

PS: I was installing Ubuntu GNOME 16.04 Final Beta a few days ago and get to try kernel version 4.4.0-16, which has solved the issue with the physical buttons of the touchpad. But unfortunately, the Screen Flickering was not solved. So, I went back to kernel version 4.4.0-7, as described above, again.