I'm more and more convinced that this is a software issue. I've tried to connect my docking station to another pc not upgraded to kernel 4.8. No errors in the syslog related to the cable. Then I've plugged it again to my laptop and the monitor woke up. No errors in the syslog related to the cable. But still unusable (very slow, high cpu usage by DisplayLink server). I attach the report of the Support Tool.
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