Only 4K on 5K Retina iMac
Submitted by Andreas Tunek
Assigned to Default DRI bug account
Description
The Retina 5K iMac has a 5K screen but it is only possible to go up to 4K with Linux. Tested with 4.2 rc4 on Fedora.
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The migration is almost done, at least the rest should happen in the background. There are still a few technical difference between the old cluster and the new ones, and they are summarized in this issue. Please pay attention to the TL:DR at the end of the comment.
Here is Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=1184204
This issue hasn't had any activity since 2019-11-19. The AMD driver stack changes rapidly and contains lots of shared code across products so it's possible that it has already been fixed. Please upgrade to a current stable kernel and userspace stack and try again. If you still experience this issue with the latest driver stack, please capture relevant logging and open a new issue referring back to this one.
closed