https://bugs.freedesktop.org/show_bug.cgi?id=93885
--- Comment #19 from Alex Deucher <[email protected]> ---
(In reply to Elmar Stellnberger from comment #18)
> Unfortunately making radeon_dig_monitor_is_duallink return true under all or
> certain circumstances produces distortions of otherwise working modes while
> it can not enable a single mode that would not have worked before. Besides
> this I heavily doubt that a true-return for dual-link would be necessary at
> all for a hdmimhz of 225 and modes like 3840x2160_23.00. Is there anything
> else I could try? - or was it neXus mobile who has betrayed me claiming a
> card 4K ready which definitely isn`t?
Read my comment again. You need to return FALSE in
radeon_dig_monitor_is_duallink(). HDMI is always single link. You need to
return false so the driver attempts to set up the link as single rather than
dual.
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