Public bug reported:
Due to a current limitation in the nvidia binary driver, when enabling
KMS (to use Wayland), any X11 sessions will crash.
Ideally, GDM would check if modesetting is enabled in the nvidia driver,
and blacklist the X11 sessions.
The following command can tell you whether the parameter is enabled or
not:
:$ sudo cat /sys/module/nvidia_drm/parameters/modeset
Y
NOTE: KMS is disabled by default in the nvidia driver, and it is
possible to enable it by editing the following file
/etc/modprobe.d/nvidia-graphics-drivers.conf
and by changing the following line:
options nvidia_375_drm modeset=0
to this:
options nvidia_375_drm modeset=1
Then you will probably have to update the initramfs too.
** Affects: gdm3 (Ubuntu)
Importance: Medium
Status: New
** Changed in: gdm3 (Ubuntu)
Importance: Undecided => Medium
** Description changed:
Due to a current limitation in the nvidia binary driver, when enabling
KMS (to use Wayland), any X11 sessions will crash.
Ideally, GDM would check if modesetting is enabled in the nvidia driver,
and blacklist the X11 sessions.
The following command can tell you whether the parameter is enabled or
not:
:$ sudo cat /sys/module/nvidia_drm/parameters/modeset
Y
NOTE: KMS is disabled by default in the nvidia driver, and it is
possible to enable it by editing the following file
- /etc/modprobe.d/nvidia-graphics-drivers.com
+ /etc/modprobe.d/nvidia-graphics-drivers.conf
and by changing the following line:
options nvidia_375_drm modeset=0
to this:
options nvidia_375_drm modeset=1
Then you will probably have to update the initramfs too.
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https://bugs.launchpad.net/bugs/1697882
Title:
GDM should not allow X11 sessions when NVIDIA's KMS is enabled
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