[Bug 76564] [AMD Fusion E-350] HDMI refresh rates doesn't match expectations

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Mar 29 09:29:19 PDT 2014


https://bugs.freedesktop.org/show_bug.cgi?id=76564

--- Comment #35 from jeroen <jeroenk61 at hotmail.com> ---
(In reply to comment #34)
> Why not increase the ref_div? hardware frying? That way you can get the
> clock exactly right.
> 
> For example: 148.5 = 100 * 29.7 / 4 * 5
>              74.2  = 100 * 37.1 / 5 * 10

Just noticed that the clock values shown by xrandr are already rounded. So the
74.2MHz for 23.976fps actually is 74.17MHz. This would mean the PLL can never
exactly generate the clock that is requested by the television I guess.

Perhaps something else is wrong with the PLL then

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