Since I installed kernel 4.14.7 I’m getting this error on logs (asynchronous wait on fence NVIDIA:nvidia.prime:7d9 timed out) but more importantly the machine freezes unpredictably, even if not randomly. The freeze can happen, say, when using xrandr to manage a second monitor (using xrandr because I’m on kde and kscreen2 does not play nice with nvidia).
Quite often the freeze happens when moving mouse across screens (sometimes it recover, though).
I saw this happen also when booting, likely when kms stuff kicks in. Actually, removing nvidia-drm.modeset=1 and splash from kernel command line avoids the freezing.
It seems that running nvidia-config and moving screen around avoids further lockups, but it could be only a coincidence.
This was not happening with kernel 4.14.6 and earlier.
nvidia-bug-report.log.gz (213 KB)