Hello, Would you please try this kernel to see if it works for you? https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/current/
Based on your experiment, it works when there is a type-C dongle in between, which might be the ddc bus and ddi port mapping issue. I'd like check if Intel development tree contains a correct mapping for you. Sorry that I am now on CNY vacation, I'll see if I can find the same model as yours, then get back to you ASAP. 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
