On 11/11/21 08:31, Javier Martinez Canillas wrote:

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And for each check /proc/fb, the kernel boot log, and if Suspend-to-RAM works.

If the explanation above is correct, then I would expect (1) and (2) to work and
(3) to also fail.

Your testing confirms my assumptions. I'll check how this could be solved to
prevent the efifb driver to be probed if there's already a framebuffer device.

I've posted [0] which does this and also for the simplefb driver.

[0]: https://lore.kernel.org/dri-devel/20211111092053.1328304-1-javierm@redhat.com/T/#u (local)

Best regards,
-- 
Javier Martinez Canillas
Linux Engineering
Red Hat