[Bug 105534] amdgpu cannot set 2560x1440 at 60 mode even though monitor,gpu and motherboard support it

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105534

--- Comment #4 from philipmorant at gmail.com ---
Thanks for replies. My monitor is DVI DL only.

My old Haswell i5 4670 with HD4600 graphics was also single link DVI only
(https://communities.intel.com/thread/44135), and it worked at 60Hz. Could
somebody please explain why haswell can do it but raven can't ?

Otherwise I find myself assuming that the hardware is capable of DL DVI, just
that the manufacturers aren't validating for it, ergo fixable in software.

I understand if AMD object to coding for something that hasn't been validated
(I'd do the same myself).  Would it be possible alternatively to provide hints
in log output or code comments or on a wiki somewhere, such that people in my
position can hack the source themselves ?

Secondly, even accepting the single link limitation, shouldn't it be possible
to run at 33 refresh rate ?  I tried at 30 and got nothing.

Thirdly, why does amdgpu refer to the connection as HDMI-A-3 ?  There's no HDMI
in the setup at all.

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