[Bug 95498] T460s (Skylake): System freeze when attaching a monitor to a Ultra Dock DP connector

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95498

--- Comment #4 from kaon at posteo.de ---
I tried to attach the monitor directly using a DisplayPort cable and it did not
freeze the system. The screen was correctly recognized and xrandr showed 4k at
60hz resolution, but it stayed black.

After switching to 30hz, the system crashed. Disabling DP1.2 on the monitor
worked, but resulted in a grainy picture.

The cable is OK (I verified with another computer).

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