https://bugs.kde.org/show_bug.cgi?id=440397
Bug ID: 440397
Summary: KDE crashes on launch with Wayland and NVidia
Product: kwin
Version: 5.22.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: gamer633...@gmail.com
Target Milestone: ---
SUMMARY
KDE crashes on launch when trying to use Wayland; it may not be able to find a
display? Though that's only a guess from the log.
STEPS TO REPRODUCE
1. Run `XDG_SESSION_TYPE=wayland sudo dbus-run-session startplasma-wayland`
from terminal
or
1. Choose "Plasma (Wayland)" in LightDM.
2. Login
OBSERVED RESULT
In terminal: the following shows
```
dbus-daemon[34804]: [session uid=1000 pid=34804] Activating service
name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=34805
comm="startplasma-wayland ")
dbus-daemon[34804]: [session uid=1000 pid=34804] Activated service
'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with
status 1
Skipping syncing of environment variable "LESS_TERMCAP_md" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_me" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_se" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_so" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_ue" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_us" as value contains
unsupported characters
dbus-daemon[34804]: [session uid=1000 pid=34804] Activating service
name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=34805
comm="startplasma-wayland ")
dbus-daemon[34804]: [session uid=1000 pid=34804] Activated service
'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with
status 1
Skipping syncing of environment variable "LESS_TERMCAP_md" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_me" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_se" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_so" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_ue" as value contains
unsupported characters
Skipping syncing of environment variable "LESS_TERMCAP_us" as value contains
unsupported characters
dbus-daemon[34804]: [session uid=1000 pid=34804] Activating service
name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=34805
comm="startplasma-wayland ")
dbus-daemon[34804]: [session uid=1000 pid=34804] Activated service
'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with
status 1
dbus-daemon[34804]: [session uid=1000 pid=34804] Activating service
name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=34805
comm="startplasma-wayland ")
dbus-daemon[34804]: [session uid=1000 pid=34804] Activated service
'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with
status 1
(kwin_wayland:34817): Gtk-WARNING **: 22:14:16.092: cannot open display:
KWin exited with code 1
Launching kwin
startplasmacompositor: Shutting down...
startplasmacompositor: Done.
```
If launching from LightDM, the screen turns black for a second, then kicks me
back to LightDM
EXPECTED RESULT
KDE Plasma launches successfully
SOFTWARE/OS VERSIONS
Linux: Arch 5.13.5
(available in About System)
KDE Plasma Version: 5.22.4-1
KDE Frameworks Version: N/A? Not sure where to find this
Qt Version: 5.15.2
ADDITIONAL INFORMATION
I also have (as following the instructions at
https://community.kde.org/Plasma/Wayland/Nvidia):
egl-wayland 1.1.7-1 installed
and the kernel parameter nvidia-drm.modeset=1, confirmed by `cat
/sys/module/nvidia_drm/parameters/modeset` producing `Y`.
I'm using the `nvidia-dkms 470.57.02-3` drivers, with a NVidia GeForce 1070M
Mobile Max-Q
Other users appear to have similar problems at
https://forum.manjaro.org/t/wayland-session-not-working/73886/4 and
https://forum.artixlinux.org/index.php/topic,2880.msg18776.html
Plasma Wayland launches just fine nested by running `dbus-run-session
startplasma-wayland` from within an X11 session.
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