Hmm, it shouldn't be a multi-stream problem. It looks like you only need HDMI v1.3 to drive that resolution and your laptop supports HDMI 1.4b already.
So mainly I suspect a bad HDMI cable, bad HDMI adaptor, or just faulty EDID data coming from the monitor. -- 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/1849484 Title: [X1 Carbon 7, i915, HDMI] Ultra-wide monitor recognized properly when plugged in only intermittently [Xorg only] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1849484/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
