Thank you for reporting this bug to Ubuntu. Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed. ** Changed in: gdm3 (Ubuntu) Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1723025 Title: no login screen when booting with an external monitor attached Status in Release Notes for Ubuntu: Fix Released Status in gdm3 package in Ubuntu: Won't Fix Bug description: Setup: Laptop + external monitor On this machine, if an external display is attached it is considered as the primary display and it disables the internal display. Then all the output goes to the external display (including grub and boot messages) But when gdm comes up, it considers the internal display as the primary display. The internal display stays off and the login dialog in not visible. The external display is all purple and it is not possible to switch to the laptop internal monitor either with the keyboard function keys or by unplugging the cable. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gdm3 3.26.1-3ubuntu2 ProcVersionSignature: Ubuntu 4.13.0-15.16-generic 4.13.4 Uname: Linux 4.13.0-15-generic x86_64 ApportVersion: 2.20.7-0ubuntu2 Architecture: amd64 Date: Thu Oct 12 09:40:56 2017 InstallationDate: Installed on 2013-09-03 (1499 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902) ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: gdm3 UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.gdm3.custom.conf: 2017-09-06T19:41:19.336760 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1723025/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

