Sorry, can’t reproduce. I’ve been using the fbdev feature since it was first introduced and never had an issue.
EDIT: To clarify since you clarified, I meant I can’t reproduce on recent stable and LTS kernels–I have not tested 6.14-rcX. There may be bugs, it’s still an early release candidate.
Then neither Manjaro nor Arch can help you as you are in a completely unsupported configuration.
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