Hi Bjorn, This doesn't seem to be a linux kernel bug. Since the desktop is Cinnamon, can you please test Ubuntu proper [1]?
At least I can't reproduce the issue on Dell Latitude 9510 + Dell WD19TB + HDMI display. [1] http://cdimages.ubuntu.com/daily-live/current/groovy-desktop- arm64.iso -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881644 Title: 20.04 i915 laptop external monitor doesn't resume from power-save, must open lid to turn it on To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881644/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
