Connecting the dock without monitor is fine. Then connecting the DisplayPort connector: aug 10 10:40:28 X1-carbon thunderbird[95811]: Couldn't map window 0x7f892a156640 as subsurface because its parent is not mapped. aug 10 10:40:28 X1-carbon thunderbird[95811]: Couldn't map window 0x7f890f70caa0 as subsurface because its parent is not mapped. aug 10 10:40:28 X1-carbon thunderbird[95811]: Couldn't map window 0x7f890f70d600 as subsurface because its parent is not mapped. [...] continues this way, until more alarming messages start showing up, "gnome-shell[2767]: WL: error in client communication (pid 151710)" and finally "gnome-shell[2767]: WL: error in client communication (pid 2767)" and journal is added as attachment. Eventually I'm removing the monitor cable again and things come to a rest.
** Attachment added: "journal.log" https://bugs.launchpad.net/gnome-shell/+bug/1970495/+attachment/5691432/+files/journal.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1970495 Title: Window manager freezes when plugging in USB-C dock with external monitor ([drm] *ERROR* mstb 00000000f21f0a30 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1970495/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
