Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gdm3 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1722078
Title:
When switching prime profiles to Intel & using kms for nvidia the
ubuntu session is not available
Status in gdm3 package in Ubuntu:
Confirmed
Status in gnome-session package in Ubuntu:
Confirmed
Bug description:
Extended test case:
Prerequisites: A laptop with nvidia hybrid gpu
Latest repo nvidia drivers installed (384
Prime sync not yet enabled
While on the nvidia driver profile boot up, login screen should only offer
the xorg session.
In nvidia-settings switch to Intel, restart (one must *always restart with
gdm3*
What happens:
At log in both the wayland & xorg session options are present (correct
behavior
Switch back to nvidia in nvidia-settings
Enable prime sync (how below
Restart
What happens:
At login only the xorg session is presented (correct behavior
Now again open nvidia-settings, switch to Intel
Restart
What happens:
At log in only the xorg session is present (incorrect behavior
What should happen:
Both the wayland & xorg sessions should be present
To enable prime sync:
sudo nano /etc/modprobe.d/zz-nvidia-modeset.conf
Insert this line, save:
options nvidia_384_drm modeset=1
Run
sudo update-initramfs -u
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-session (not installed)
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 8 09:29:25 2017
InstallationDate: Installed on 2017-10-06 (2 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Beta amd64 (20171004)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-session
UpgradeStatus: No upgrade log present (probably fresh install)
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