[Bug 111480] i915 monitor connected through dock not working

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111480

--- Comment #20 from Joseph Thommes <joseph-thommes at gmx.de> ---
Created attachment 145697
  --> https://bugs.freedesktop.org/attachment.cgi?id=145697&action=edit
dmesg_drm_debug=0xe

I started the laptop in the dock with the monitor connected. I did dmesg -w |
tee "file" in a tty. After the spamming of the kernel stopped, I logged into my
X-Session and tried to change the solution of the monitor (which was shown as
active and detected, but nothing arrived at it) to 3840x2160 in arandr (which
is the maximum it can handle) and at this point my computer got completely
stuck. Pulling the hdmi and even disconnecting the dock both did not work and I
had to forcefully power off my PC.
Note that the monitor from this and the last time is not the same as in the
beginning (actually this time it's a TV), but the same problem shows. Sadly I
do not have access to the first monitor until christmas, if that would be
necessary.

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