[Bug 107738] System hangs when hot-plugging Thunderbolt 3 dock with dual output (DP MST) connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107738

--- Comment #8 from Léo Grange <leo at grange.cafe> ---
Created attachment 141372
  --> https://bugs.freedesktop.org/attachment.cgi?id=141372&action=edit
Kernel log, stock 4.18.5 kernel, without hotplug (no issue)

In case it helps, I wanted to attach the dmesg of a case for which the adapter
works without any issue.
Unfortunately, as some probably unrelated bugs happen with the drm-tip kernel,
I had to use my distribution stock kernel (4.18.5).
The adapter was connected _before_ to power on the laptop. In this case,
everything works as expected: early KMS detects and uses the 3 monitors (laptop
display and the 2 external ones), Xorg can be extended on these without issue.

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