[Bug 85621] [IVB DP] FIFO underrun when trying to set a high display mode

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85621

--- Comment #9 from Anssi Hannula <anssi at mageia.org> ---
OK, thanks.

As a workaround I reduced the 60Hz mode horizontal blanking period to make the
total width 4448px, bringing the mode clock just under 400MHz.

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