Hi I can see the error message on my RPi3. But it's non-critical and we could just ignore it. (In reply to Takashi Iwai from comment #15) > Then maybe we need drm_aperture_remove_conflicting_pci_framebuffers()? e.g. IMHO the code works as expected. It's just that we're seeing two devices for the the same framebuffer. The first is created from the device-tree node [1] and the second is created from the EFI stub that's on the RPi. [2] But the EFI thing just another reference to the device-tree entry, so the memory overlaps. I have to verify all of this, but a fix would be to disable CONFIG_SYSFB on arm if this has no negative impact on other arm systems. [1] https://elixir.bootlin.com/linux/v6.0.6/source/drivers/of/platform.c#L587 [2] https://elixir.bootlin.com/linux/v6.0.6/source/drivers/firmware/sysfb_simplefb.c#L123