[SOLVED] Unable to Start GNOME Wayland Session from GDM

master_icono · 2023-10-27 16:34:10

Issue:
I'm unable to select a GNOME Wayland session from the GDM login manager. When clicking the cogwheel icon, only X11 options are displayed. However, I can successfully start a Wayland session manually using the command

XDG_SESSION_TYPE=wayland dbus-run-session gnome-session

. I've verified it's running under Wayland by checking "Windowing System" in GNOME Settings > System Details.

System Details:

Graphics Card: NVIDIA GeForce 1080 Ti
Driver Version: 535.113.01
GNOME Version: 45.0
System Status: Up-to-date
Distro: Arch Linux

What I've Tried:

Kernel Parameters: Added
```
nvidia_drm.modeset=1
```
to kernel parameters. Confirmed with cat /proc/cmdline.
Module Loading: Added nvidia, nvidia_modeset, nvidia_uvm, and nvidia_drm modules via mkinitcpio and regenerated initramfs. Confirmed modules are loaded.
GDM Configuration: Made sure
```
WaylandEnable=false
```
is commented out in /etc/gdm/custom.conf.
Environment Variables: Set
```
GBM_BACKEND=nvidia-drm
```
and
```
__GLX_VENDOR_LIBRARY_NAME=nvidia
```
. Verified with echo $GBM_BACKEND and echo $__GLX_VENDOR_LIBRARY_NAME.
Additional NVIDIA Settings: Followed the Arch Wiki suggestions to set
```
NVreg_PreserveVideoMemoryAllocations=1
```
and enabled the NVIDIA systemd services nvidia-suspend.service, nvidia-hibernate.service, and nvidia-resume.service.
Udev Rules: Created a symlink to /dev/null at
```
/etc/udev/rules.d/61-gdm.rules
```
to override the default rules.
Custom .desktop File: Attempted to create a custom .desktop file replicating the manual start command, but it doesn't appear in the session list.
Logs: Found no suspicious entries in journalctl -u gdm.service.

Seeking Help:
I've tried everything I could find but am still unable to get GNOME to start a Wayland session through GDM. Any help or additional troubleshooting steps would be greatly appreciated!

Last edited by master_icono (2023-10-29 08:37:19)

seth · 2023-10-27 19:15:12

Logs: Found no suspicious entries in journalctl -u gdm.service.

Please post your complete system journal for the boot:

sudo journalctl -b | curl -F 'file=@-' 0x0.st

tekstryder · 2023-10-28 18:50:40

master_icono wrote:

Environment Variables: Set
GBM_BACKEND=nvidia-drm
and
__GLX_VENDOR_LIBRARY_NAME=nvidia
. Verified with echo $GBM_BACKEND and echo $__GLX_VENDOR_LIBRARY_NAME.

I went through this process recently with a 1050 Ti card.

One difference I note... I did not set those variables, and still get:

Oct 26 08:57:46 gnome-shell[939]: Created gbm renderer for '/dev/dri/card0'

This thread never got any answer, but did you try without setting those EVs?
https://bbs.archlinux.org/viewtopic.php?id=280294

master_icono · 2023-10-29 08:36:19

I am sure I restarted gdm about 50 times and restarted the system about 20 times while trying to find an answer. However, when I started the machine today after shutdown, everything worked as expected: the wayland entry in the login manager appeared and works as expected. Not really sure what happened because I did not change anything.

Thank you for your help, marking as solved.

Arch Linux

#1 2023-10-27 16:34:10

[SOLVED] Unable to Start GNOME Wayland Session from GDM

#2 2023-10-27 19:15:12

Re: [SOLVED] Unable to Start GNOME Wayland Session from GDM

#3 2023-10-28 18:50:40

Re: [SOLVED] Unable to Start GNOME Wayland Session from GDM

#4 2023-10-29 08:36:19

Re: [SOLVED] Unable to Start GNOME Wayland Session from GDM

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