Uninstalling the nvidia binary driver (367.57) and moving back to Nouveau "fixed" the problem for me. The reproducibility of this problem seems to dependent on the nvidia video card model, as I have another workstation with another nvidia card model and the other one had no issue with the boot prompt on newer kernel.
The boot prompt UI definitely changed between -31 and -57 and the video driver probably mess up. So I don't think it's the kernel itself but plymouth (? or whatever prompts for the FDE password) upgrade that happened around the same time. -- 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/1640297 Title: 16.04.1 LTS hang during boot 4.4.0-45-generic with /etc/crypttab. Boots fine in 4.4.0-42-generic and older Status in linux package in Ubuntu: In Progress Bug description: System hangs during boot with 4.4.0-45-generic if /etc/crypptab contains a valid entry. Passphrase prompt never seen. Black screen with blinking underscore in upper left corner. Repeated attempts to type passphrase have no effect. There are two workarounds: 1) Comment out line referring the encrypted partition in /etc/crypttab and /etc/fstab. Mount the partition manually after boot completes 2) Boot in 4.4.0-42-generic which works as do earlier versions. i.e. the user provides passphrase at the prompt during boot and the system finishes booting robert@kalymnos:~$ cat /etc/crypttab spare2 UUID=498b08bb-5e6b-4ddf-8b37-e059665a34e6 none luks robert@kalymnos:~$ grep mapper /etc/fstab /dev/mapper/spare2 /spare2 ext4 defaults 0 2 --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: robert 2413 F.... pulseaudio /dev/snd/controlC0: robert 2413 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=291e75f9-3814-499b-bbb2-f385c164b942 InstallationDate: Installed on 2016-08-18 (83 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IwConfig: lo no wireless extensions. enp0s25 no wireless extensions. JournalErrors: Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system. Users in the 'systemd-journal' group can see all messages. Pass -q to turn off this notice. No journal files were opened due to insufficient permissions. NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia Package: linux (not installed) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-42-generic root=UUID=24166ab8-327a-4477-96d2-3f57b4a47657 ro quiet splash ProcVersionSignature: Ubuntu 4.4.0-42.62-generic 4.4.21 RelatedPackageVersions: linux-restricted-modules-4.4.0-42-generic N/A linux-backports-modules-4.4.0-42-generic N/A linux-firmware 1.157.4 RfKill: Tags: xenial Uname: Linux 4.4.0-42-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WifiSyslog: _MarkForUpload: True dmi.bios.date: 07/29/2013 dmi.bios.vendor: Intel Corp. dmi.bios.version: SOX5810J.86A.5600.2013.0729.2250 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: DX58SO dmi.board.vendor: Intel Corporation dmi.board.version: AAE29331-701 dmi.chassis.type: 2 dmi.modalias: dmi:bvnIntelCorp.:bvrSOX5810J.86A.5600.2013.0729.2250:bd07/29/2013:svn:pn:pvr:rvnIntelCorporation:rnDX58SO:rvrAAE29331-701:cvn:ct2:cvr: --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: robert 2413 F.... pulseaudio /dev/snd/controlC0: robert 2413 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=291e75f9-3814-499b-bbb2-f385c164b942 InstallationDate: Installed on 2016-08-18 (83 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) IwConfig: lo no wireless extensions. enp0s25 no wireless extensions. JournalErrors: Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system. Users in the 'systemd-journal' group can see all messages. Pass -q to turn off this notice. No journal files were opened due to insufficient permissions. NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia Package: linux (not installed) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-42-generic root=UUID=24166ab8-327a-4477-96d2-3f57b4a47657 ro quiet splash ProcVersionSignature: Ubuntu 4.4.0-42.62-generic 4.4.21 RelatedPackageVersions: linux-restricted-modules-4.4.0-42-generic N/A linux-backports-modules-4.4.0-42-generic N/A linux-firmware 1.157.4 RfKill: Tags: xenial Uname: Linux 4.4.0-42-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WifiSyslog: _MarkForUpload: True dmi.bios.date: 07/29/2013 dmi.bios.vendor: Intel Corp. dmi.bios.version: SOX5810J.86A.5600.2013.0729.2250 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: DX58SO dmi.board.vendor: Intel Corporation dmi.board.version: AAE29331-701 dmi.chassis.type: 2 dmi.modalias: dmi:bvnIntelCorp.:bvrSOX5810J.86A.5600.2013.0729.2250:bd07/29/2013:svn:pn:pvr:rvnIntelCorporation:rnDX58SO:rvrAAE29331-701:cvn:ct2:cvr: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1640297/+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