https://bugzilla.kernel.org/show_bug.cgi?id=206299
--- Comment #6 from Frédéric Pierret (frederic.epitre@orange.fr) --- (In reply to Ilia Mirkin from comment #5)
Your kernel log doesn't have anything too weird in it (which is good). However I did see a similar type of error with someone using coreboot (admittedly, with an MCP77 IGP). Are you using a non-original booting mechanism? Given that there's signed firmware situations going on, we can't just re-POST the GPU easily, unlike in the MCP77 case.
I'm using standard default bios (legacy mode).
The mmio read failures may be a red herring -- basically we try to figure out why the error happened, and get bad mmio reads in the process. Could just be that the error handler hasn't been properly adjusted for Turing, and reads from bad places.
I'm afraid this is out of my knowledge base, sorry. Perhaps Ben will have something clever to say.
Hope so and thank you again for your feedback.