https://bugs.freedesktop.org/show_bug.cgi?id=47007
--- Comment #33 from Tvrtko Ursulin tvrtko.ursulin@onelan.co.uk 2012-03-16 01:47:31 PDT --- (In reply to comment #32)
(In reply to comment #31)
It is a single DVI-I physically.
But even identifying it would not change anything with regards to polling induced rendering stalls, right?
Well, shared_ddc wouldn't apply in that case since there is only one connector, and for better or worse we wouldn't be polling since the connector does have an HPD pin (even if it doesn't necessarily work reliably with the analog part of a DVI-I connector). So fixing that would avoid the polling stalls on your particular board.
Ok, I misunderstood would would happen after applying this quirk. I though we would still have three connectors, just that DVI-D would become DVI-I. In fact what should happen is that DVI-D becomes DVI-I and VGA vbios entry is ignored for this board?
Is this something which can be done in radeon_atom_apply_quirks? I'll give it a go.