https://bugzilla.kernel.org/show_bug.cgi?id=82431
Alex Deucher alexdeucher@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #2 from Alex Deucher alexdeucher@gmail.com --- I doubt that commit is the problematic one. However, you can revert to the previous behavior by passing radeon.dpm=1 on the kernel command line in grub.
This looks like a duplicate of: https://bugs.freedesktop.org/show_bug.cgi?id=43655 Does your grub config have GRUB_GFXPAYLOAD_LINUX=keep in it? If so, does removing that help?