Hi Mika, On Mon, Jun 07, 2021 at 07:10:59PM +0300, Mika Westerberg wrote: > Hi, > > On Mon, Jun 07, 2021 at 08:31:10PM +0800, joeyli wrote: > > Hi Mika, > > > > There have some machines be found on openSUSE Tumbleweed that this patch > > causes that SSDT tables can not be dynamic loaded. The symptom is that > > dmesg shows '_CPC not found' because SSDT table did not dynamic load. > > > > [ 1.149107] ACPI BIOS Error (bug): Could not resolve symbol [\_PR.PR00._CPC], AE_NOT_FOUND (20210105/psargs-330) > > > > Looks that the firmware didn't response OSC_SB_CPCV2_SUPPORT after > > kernel changed to new behavior. The openSUSE bug is here: > > > > Bug 1185513 - ACPI BIOS Error after upgrade to 5.12.0-1-default > > https://bugzilla.suse.com/show_bug.cgi?id=1185513 > > > > Could you please help to give any suggestion? > > There is another one that Red Hat reported here: > > https://bugzilla.kernel.org/show_bug.cgi?id=213023 > > The Bugzilla entry also has a patch attached [1] from Hans, can you try it > out and see if that fixes the issue? > > [1] https://bugzilla.kernel.org/attachment.cgi?id=297195 > Thanks for your information! Hans's patch looks reasonable. I will backport to openSUSE TW and let bug reporter helps to test it. We will add comment on kernel.org bugzilla. Thanks a lot! Joey Lee
