[Bug 109499] amdgpu 4k modes not working

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109499

--- Comment #4 from Nadal Gonzalo García Zavala <snorkellingcactus at gmail.com> ---
I'm not sure, but is possible the issue were fixed between revisions 43 and 45
of ubuntu kernel 4.15.

Before upgrading the kernel, we reached a solution:
- Using EDID emulators, getting xrandr showing both DisplayPort outputting 4k
- Dumping the EDID to a file
- Quitting emulators, conecting DisplayPorts normally with EDID firmware forced
to previously generated file.

Will attach our working EDID file.

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