I've done further testing as you suggested. Here's a breakdown of my findings:
I tested the following kernel versions on 4k + displayport (installed from launchpad librarian, with their matching -extra package and an "update-grub"): - 4.12.0-12: Boots. System seems to crash after a few seconds on the 4k desktop (cannot switch VTs). Maybe a separate bug however, at least it makes it to login+desktop. - 4.12.0-13: Boots. Same symptoms as previous kernel (crashes after a few seconds on the desktop). - 4.13.0-10: Does not boot. Fails with a slightly different output than initially reported (see below) - 4.13.0-11: Does not boot. Same symptoms. - 4.13.0-12: Does not boot. Same symptoms. Screenshot https://photos.app.goo.gl/ztJvK7Im2LVCK0ss1 - 4.13.0-15: Does not boot. Same symptoms. - 4.13.0-16: Does not boot. Same symptoms. None of the tested kernels exhibit any problematic behavior when the HDMI + 1080p screen is plugged in. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1723619 Title: Ubuntu Desktop ISO fails to boot with nouveau on a displayport To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1723619/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
