With the Nvidia driver installed there is no option to use Wayland on the login screen

[Daniel van Vugt]

Starting in impish with nvidia-470 and the latest gdm3 and xwayland packages, Wayland is fully supported in theory but you never get any option to select Wayland on the login screen. There is no session menu and you always get Xorg instead.

WORKAROUND:

Edit /etc/default/grub and change:

  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to:

  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvidia-drm.modeset=1"

and then:

  sudo update-grub

[Sebastien Bacher (seb128)]

Thanks Daniel, how did you enable the driver? That's probably bug #1943816 if that's a new installation, the issue is that ubuntu-drivers is the one writing the kms option since https://launchpad.net/ubuntu/+source/ubuntu-drivers-common/1:0.9.2 but you only get that set if you enable the driver by using the right script

[Daniel van Vugt (vanvugt)]

I use:

  sudo apt install nvidia-driver-470

out of habit, and also because of bug 1946196.

[Daniel van Vugt (vanvugt)]

Also it's not a new installation.

[Sebastien Bacher (seb128)]

Alberto, what's the rational to have ubuntu-drivers doing the kms configuration there? Wouldn't it be more robust to have it in the deb or generated in the postinst?

[Daniel van Vugt (vanvugt)]

I wonder if we should NOT enable nvidia-drm.modeset=1 as it might reduce the available features in the Nvidia legacy/native driver for Xorg. Maintaining stability and continuity there is probably more important than enabling Wayland support by default right now...

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[saba46 (hpbiege)]

/etc/default/grub and adding
GRUB_CMDLINE_LINUX="nvidia-drm.modeset=1"
sudo upgrade-grub

Thank you! Finally that worked ! (also with nvidia-driver-470)

[jeremyszu (os369510)]

This issue should be fixed in latest gdm in 22.04.

I tried the latest jammy + dist-upgrade, the option is there.