An experiment lead to a potential alternative explanation for #991967. The issue may be ACPI (non-UEFI) powerdown/reset was broken at 4.19.194-3. Presence of Xen on the system may be unrelated.
Failing that, it could be Xen and non-UEFI systems are effected. (Xen was tried on a UEFI system and the issue wasn't observed) -- (\___(\___(\______ --=> 8-) EHM <=-- ______/)___/)___/) \BS ( | ehem+sig...@m5p.com PGP 87145445 | ) / \_CS\ | _____ -O #include <stddisclaimer.h> O- _____ | / _/ 8A19\___\_|_/58D2 7E3D DDF4 7BA6 <-PGP-> 41D1 B375 37D0 8714\_|_/___/5445