[Bug 96868] AMDGPU Tonga only does 2560x1440 at 120hz, switching to 144hz causes display errors, same thing used to happen with fglrx.

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96868

--- Comment #5 from Alex Deucher <alexdeucher at gmail.com> ---
I think the vblank period is too short at 144Hz for the mclk switching.

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