https://bugs.freedesktop.org/show_bug.cgi?id=103788
--- Comment #8 from Michel Dänzer michel@daenzer.net --- (In reply to oschowa from comment #7)
I have a similar issue which is still present in 4.15-rc2. Though, in my case the system completly hangs after the screen wakes up from sleep and I can't even ssh in and there is nothing in the logs after a forced reboot.
In other words, an almost completely different issue. ;) Please file your own report.