GDM - how to add a session that isn't in the list?

[rado84]

Until recently I was using LightDM with Cinnamon but due to some problems with waking up from suspend, I moved to GDM (again). That didn't fix the problem bc it turned out the problem was in the driver for this particular GPU. But LightDM also has another problem - no obvious way to switch sessions, whereas with GDM it's obvious. But I discovered it doesn't show all the sessions available for Cinnamon. From version 6.0 the Cinnamon devs have added an experimental support for Wayland, so I wanna try it. But when I exit the current Xorg session and click the gear icon on GDM, the Wayland session isn't there - only the Xorg session and "Software rendering" are there. However, when I go to /usr/share/cinnamon-session/sessions I can see 3 session files: GPU session (Xorg), "Software Rendering" AND a Wayland session file. But that Wayland session isn't being displayed in GDM.

So the question is: how do I add the Wayland session to the sessions list of GDM?

I did a lot of searching in the past hours about that but I couldn't find anything. I'm open to suggestions at this point.

 

[Vimmer]

Is a "session" related to virtual machine usage?

 

[rado84]

Is a "session" related to virtual machine usage?

No. The real machine (host).

 

[f33dm3bits]

When I still had an Nvidia gpu I had to do the following to get the Wayland session for Gnome to show up with GDM.

GDM - ArchWiki

wiki.archlinux.org

# ln -s /dev/null /etc/udev/rules.d/61-gdm.rules

Then restart gdm and see if your Cinnamon Wayland session shows up. That was about half a year ago, so things might have changed but it's still worth trying.

 

[rado84]

Thanks, I will.

 

[rado84]

When I still had an Nvidia gpu I had to do the following to get the Wayland session for Gnome to show up with GDM.

GDM - ArchWiki

wiki.archlinux.org

Then restart gdm and see if your Cinnamon Wayland session shows up. That was about half a year ago, so things might have changed but it's still worth trying.

In my case (Arch) it turned out that this file was in /usr/lib/udev/rules.d. And since I'm curious by default, I decided to see what was inside it and noticed this:

# Disable wayland when nvidia modeset is disabled

So I just added another entry in grub with Arch (one entry without modeset and another WITH modeset enabled - in case the modeset entry doesn't work for whatever reason, I'll able to boot into a working system). I'll try that later cuz I gotta get out now, but I decided to stop by and share what I found so far thanks to your suggestion.