[Bug 106999] [raven] 2160p at 60Hz no longer available

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106999

--- Comment #14 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Mike Lothian from comment #13)
> I know my SkyQ box outputs at 2160 at 60Hz in 10bit colour

https://en.wikipedia.org/wiki/HDMI#Refresh_frequency_limits_for_HDR10_video

4k at 60@10bpc needs YUV 4:2:2 for HDMI 2.0, so it can't handle RGB (or YUV
4:4:4). That's probably the discrepancy - there's currently no great way for
userspace to select which encoding variant is to be used (or what bpc to send
it at).

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