FYI My bug report https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1868551
I ported the patch https://launchpadlibrarian.net/470860672/ubuntu-focal-1868551-i915_active_acquire.patch Official Issue #827 https://gitlab.freedesktop.org/drm/intel/issues/827 Good article on the subject https://linuxreviews.org/Linux_Kernel_5.5_Will_Not_Fix_The_Frequent_Intel_GPU_Hangs_In_Recent_Kernels Best Regards, Guy Baconniere