According to the journal errors, your computer is running GDM under X. The default is for GDM to use Wayland. My understanding is that you need GDM to run Wayland to have the option to use GNOME on Wayland.
But I don't know why GDM is loading for you with Wayland in 17.04 when it apparently did with 16.10. You could try reporting this to GNOME. https://wiki.ubuntu.com/Bugs/Upstream/GNOME Report it against Core>gnome-session. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance. ** Also affects: ubuntu-gnome Importance: Undecided Status: New ** Changed in: ubuntu-gnome Milestone: None => zesty ** Changed in: gnome-session (Ubuntu) Status: New => Confirmed ** Changed in: ubuntu-gnome Status: New => Confirmed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1675964 Title: Wayland session not available in GDM. Status in Ubuntu GNOME: Confirmed Status in gnome-session package in Ubuntu: Confirmed Bug description: When hoping to find "GNOME" in GDM I only find GNOME (Xorg ...) and GNOME Classic. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: gnome-session 3.24.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-13.15-generic 4.10.1 Uname: Linux 4.10.0-13-generic x86_64 ApportVersion: 2.20.4-0ubuntu2 Architecture: amd64 CurrentDesktop: GNOME Date: Sat Mar 25 00:53:28 2017 EcryptfsInUse: Yes InstallationDate: Installed on 2017-03-13 (11 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Alpha amd64 (20170219) SourcePackage: gnome-session UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1675964/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
