[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 #10 from Leho Kraav (:macmaN :lkraav) <leho at kraav.com> ---
I'm getting the exact same thing on a PR02X docked E7440, which I believe has
Haswell GT2. I haven't tried doing 30Hz through the dock yet, but I will.

When connecting the 3440x monitor directly to the laptop's mini-DP port,
everything works fine at 60Hz.

Running 3.18.2, libdrm 2.4.58.

Thoughts?

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