I have the same issue with a Dell Vostro & business dock WD15 4.15.0-43 works well, I saved that choice on GRUB to be safe.
Dell Vostro Intel® Core™ i5-8250U CPU @ 1.60GHz × 8 Intel® UHD Graphics 620 (Kabylake GT2) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813663 Title: External monitors does not work anymore 4.15.0-44 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813663/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
