[Bug 93361] [IVB] 12bpc hdmi causes wrong real refresh rate (swapbuffers return time)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93361

--- Comment #28 from Kevin Mitchell <kevmitch at gmail.com> ---
(In reply to Stanislav Lisovskiy from comment #27)
> What about this bug? Should we now proceed with DRM property for explicit
> 12bpc disabling for such case, so that there is at least no need in hacking
> the EDID data? 
> Or as I understand there is an option to implement a clock bending, which is
> order of magnitude higher in complexity.

It sounds like clock bending is the proper fix. As you can see from the table
in the description, the refresh rate can be wrong even without the 12bbc
complications. 12bpc just makes it more wrong. That said, it would be nice to
have some user control over 12bpc behaviour in the interim.

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