> Did this issue start happening after an update/upgrade? I can't tell exactly. The system is just a week old, but I recall that there has been a kernel upgrade. HDMI had some issues (i.e. wouldn't connect) via Lenovo's docking station last week, it worked today though when connected to the notebook's HDMI port directly.
I've tried with my somewhat aged (but okay) LG Flatron M2380D-PZ monitor, and there is some trouble: - The monitor is apparently detected when (the HDMI cable is attached and) the monitor is turned on: - The second monitor shows up in System Settings > Devices > Displays for about a second. Before that the notebook screen turns black for about half a second. - Then the second monitor disappears from the Settings again, and the external monitor shows "No Signal" That is an issue only since Ubuntu 18.04 (I can't tell whether it's related to a specific kernel), because the monitor used to work with my Dell XPS 13 Developer Edition, which is running the very same configuration of Ubuntu (18.04 LTS developer version) and behaves similarly now, until Ubuntu 17.10 not too long ago. I'm a bit reluctant building the latest kernel. If it's really really important I may give it a shot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1763202 Title: Lenovo X1 Carbon 6th Gen. HDMI not working for external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1763202/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
