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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1723619 Title: Ubuntu Desktop ISO fails to boot with nouveau on a displayport Status in Release Notes for Ubuntu: New Status in linux package in Ubuntu: Confirmed Bug description: On the latest daily artful image (/current as of 2017-01-14), the following occurs on a system with nVidia graphics (on my system, a GTX970) when connected to a 4k display over a displayport: https://photos.app.goo.gl/gLUva3Vgvtv0lAmj2 Steps to reproduce: - Download latest daily image, check checksums, burn to USB - Boot from USB. - Choose "Install Ubuntu" or "try ubuntu" at the menu. This happens on the livecd, but also upon ugrading the system from a previous daily with a different kernel: my "old" daily booted and installed fine with kernel 4.12.0-12, then failed with same error once dist-upgraded. On the faulty system I could test with, it seems to *only* happen over displayport/on a 4k screen (I don't own a non-4k displayport screen to test the 4k out). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1723619/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp