* Hardware *and* driver used
Intel UHD 630 9bc5 (i915)
motheboard: MSI MEG z490i Unify
CPU: Intel i7 10700
* 32 or 64 bit
* .xsession-errors contains:
libva error: /usr/lib64/dri/i965_drv_video.so init failed
[3571:3571:1206/135917.074113:ERROR:vaapi_wrapper.cc(541)] vaInitialize failed: unknown libva error
[3571:3571:1206/135917.076827:ERROR:sandbox_linux.cc(374)] InitializeSandbox() called with multiple threads in process gpu-process.
Any attempt to start Cinnamon desktop (execute cinnmon-session) causes and immediate halt of the whole OS and reboot. This is probably caused by a defect in the i915 kernel driver.
Cinnamon devs do not want to take the blame: https://github.com/linuxmint/cinnamon/issues/9752
Please file i915 issues at the freedesktop.org gitlab https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs