Hi Rafael, Mario, Commit 2ca8e6285250 ("Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag"") is causing the issues fixed by the reverted commit to show up again, see: https://bugzilla.kernel.org/show_bug.cgi?id=213023 https://bugzilla.redhat.com/show_bug.cgi?id=1963717 both of which have comments from the reporters that the error message is back again; and presumably also that /sys/devices/system/cpu/cpu0/acpi_cppc is missing again. Can you please take a look and see if we can come up with something which fixes both the re-surfaced issue, as well as the issue which the revert tries to address ? Regards, Hans