https://bugzilla.suse.com/show_bug.cgi?id=1185513 https://bugzilla.suse.com/show_bug.cgi?id=1185513#c14 --- Comment #14 from Joey Lee <jlee@suse.com> --- Three acpidump result show 2 different situations: - robert's and Hans's machines have _real_ firmware bug. They have similar ApHwp tables. But both of them do _NOT_ have \_PR.CPU0._CPC definition in other SSDT tables. So it makes sense that they saw "Could not resolve symbol [\_PR.CPU0._CPC]" I have used acpiexec to parse their SSDT tables and confirmed that their _CPC method is missed in CPU0. I used two different version of ACPICA, version 20210105 corresponding to v5.12 kernel and version 20201113 corresponding to v5.11 kernel. Both of those two ACPICA show the same error: - execute \_PR.PR01._CPC Evaluating \_PR.PR01._CPC Evaluation of \_PR.PR01._CPC failed with status AE_NOT_FOUND So robert's and Hans's machine has firmware bug. -- You are receiving this mail because: You are on the CC list for the bug.