[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 #30 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
The max bpc property was merged a while back:

xrandr --output <whatever> --set 'max bpc' 8

should do the trick to force 8bpc

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