[Bug 54381] [drm:radeon_atom_pick_pll] *ERROR* unable to allocate a PPLL

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=54381





--- Comment #3 from Alex Deucher <alexdeucher at gmail.com>  2013-02-24 23:14:49 ---
(In reply to comment #2)
> That explains why the 3 monitor setup works, but 2 monitors plus a projector
> don't: two of the monitors are the same. Interestingly enough, it works
> completely fine for any kernel < 3.7.0. I have been using this setup since at
> least a year or so and never had any problems with 3 different display units
> (until 3.7.0). Considering what you said that confuses me, since it shouldn't
> have worked as problem-free as it did, should it?

It probably worked by accident previously.  Presumably the pixel clocks on the
two monitors that were sharing a PLL were close enough that the monitors were
ok with it.  What modes are you running on the two monitors and projector?

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