I am the person who wrote the post on the Dell forums Vladimir is referring to (and I have posted earlier here as above). Note that adding i915.enable_dp_mst=0 doesn't just "sometimes resolve" the very frequent blackouts, disconnects, and other problems I was seeing with my WD19TB dock + XPS 13 9300, it completely resolves all of them! At least with my configuration and versions as stated in that post https://www.dell.com/community/XPS/XPS-13-9300-and-WD19TB-linux- problem/m-p/7723066/highlight/true#M72030.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1889342 Title: Thunderbolt Dock Loses Monitors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889342/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs