Thanks for searching. It appears this is now a problem in the nvidia driver only, if not a hardware/cable problem. So reassigning...
** Package changed: gdm3 (Ubuntu) => nvidia-graphics-drivers-390 (Ubuntu) ** No longer affects: mutter (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-390 in Ubuntu. https://bugs.launchpad.net/bugs/1777378 Title: [nvidia] GDM no longer presents GUI login Ubuntu 18.04 Status in nvidia-graphics-drivers-390 package in Ubuntu: Incomplete Bug description: Background: Did a clean install of Ubuntu 18.04, standard Gnome desktop. Used nVidia proprietary drivers from Ubuntu repo. Worked quite well for over two weeks. When booting up on Friday 15th June, 2018 no longer had a GUI login screen. There was just a few lines in tty1. Can still login to other terminals and through SSH. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gdm3 3.28.2-0ubuntu1.2 ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18 Uname: Linux 4.15.0-23-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 Date: Sun Jun 17 22:53:22 2018 InstallationDate: Installed on 2018-05-20 (28 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gdm3 UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.gdm3.custom.conf: 2018-05-31T00:51:08.204556 --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2018-05-20 (28 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) NonfreeKernelModules: nvidia_modeset nvidia Package: gdm3 3.28.2-0ubuntu1.2 PackageArchitecture: amd64 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18 Tags: bionic Uname: Linux 4.15.0-23-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True mtime.conffile..etc.gdm3.custom.conf: 2018-06-18T00:27:55.234654 --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2018-05-20 (28 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) NonfreeKernelModules: nvidia_modeset nvidia Package: mutter PackageArchitecture: amd64 ProcEnviron: LANG=en_US.UTF-8 TERM=xterm-256color PATH=(custom, no user) SHELL=/bin/bash ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18 Tags: bionic Uname: Linux 4.15.0-23-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True mtime.conffile..etc.gdm3.custom.conf: 2018-06-18T00:27:55.234654 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1777378/+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