https://bugzilla.kernel.org/show_bug.cgi?id=61811

--- Comment #10 from Alex Deucher alexdeucher@gmail.com --- (In reply to Dieter Nützel from comment #8)

(In reply to Alex Deucher from comment #6)

...

Can you bisect?

Hello Alex,

I'll try 'cause I get the same with clean 3.12-rc2 + 0001-drm-radeon-avoid-UVD-corruption-on-AGP-cards-using-G.patch

radeon.agpmode=8 works as before, but radeon.agpmode=-1 gave

[-] [ 10.958649] radeon: `-1' invalid for parameter `agpmode' [ 11.515274] radeon: `-1' invalid for parameter `agpmode' FATAL: Error inserting radeon (/lib/modules/3.12.0-rc2-1-desktop/kernel/drivers/gpu/drm/radeon/radeon.ko): Invalid argument

We haven't touched anything AGP related in radeon in years. Maybe some general kernel module parsing change?

Any point to start without git-tree?

You really need a git tree to bisect.