https://bugzilla.kernel.org/show_bug.cgi?id=204181
--- Comment #25 from Sergey Kondakov (virtuousfox@gmail.com) --- (In reply to Nicholas Kazlauskas from comment #24)
This should be fixed with the series linked below:
https://patchwork.freedesktop.org/series/64505/
But it still needs review and backporting to older kernels.
So, I've patched my 5.2.5 kernel package with that set and re-enabled page flipping. So far, everything seems fine. When it's merged and released, this issue may be closed. Thanks !