Based on your result, the hardware also can't work with Intel's development branch, then the Ubuntu's kernel doesn't work for you as expect.
I have verified on two certified hardwares. https://certification.canonical.com/hardware/202007-28055/ https://certification.canonical.com/hardware/202006-27982/ The HDMI output works both on oem kernel 5.6 and 5.10. It seems I can't reproduce your problem, but your hardware config is a bit different from what I have in hand. Could you file a bug to Dell customer support? They will provide me the hardware if they expect the hardware can work with open platform. Thanks, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1914670 Title: No HDMI detection To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1914670/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
