i915ovmfrom upd , Intel i915 error, overlay VM update, GVT-g failure, VirtIO-GPU timeout, kernel drm execbuffer fix.

Furthermore, in virtualization stacks like (mediated device), an overlay VM may be used to intercept GPU commands. The from upd part then indicates a command coming from an update ring buffer.

sudo grub-mkconfig -o /boot/grub/grub.cfg Why? Disables Panel Self Refresh and Frame Buffer Compression, which can conflict with overlay VM updates. In your VM’s XML config (for KVM):