Comment 69 for bug 1983180

Revision history for this message
In , mario.limonciello (mario.limonciello-linux-kernel-bugs) wrote :

All the known issues from CPPC and _OSC with AMD should be fixed for 5.19-rc8. If you still have one with Zen open a new issue.

The remaining issue is that reportedly from this thread a number of Intel systems the firmware will mask the _OSC during negotiation. When the _OSC is masked a dynamic SSDT doesn't get loaded.

Someone needs to confirm if:
* This is intended behavior that firmware masks the _OSC (and thus CPPC v2 shouldn't be used on these systems).
or
* This is purely a firmware bug and CPPC v2 should be used and that should be quirked when the _OSC is evaluated on the affected systems (or later so the SSDT still loads).