I just reported
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1969250 which was
marked as duplicate of this bug (which it is), but do check that bug for
a bit more analysis on where the bug is. TL;DR: there are nvidia-
specific checks in 61-gdm.rules that are no longer guarded by a check
for nvidia hardware in the rules file (because the patch reversal in
42.0-1ubuntu4 removed that check).
As a workaround, you can edit /lib/udev/rules.d/61-gdm.rules and
comment out or remove these lines:
## Check if suspend/resume services necessary for working wayland support is
available
TEST{0711}!="/usr/bin/nvidia-sleep.sh", GOTO="gdm_disable_wayland"
TEST{0711}!="/usr/lib/systemd/system-sleep/nvidia", GOTO="gdm_disable_wayland"
IMPORT{program}="/bin/sh -c \"sed -e 's/: /=/g' -e
's/\([^[:upper:]]\)\([[:upper:]]\)/\1_\2/g' -e 's/[[:lower:]]/\U&/g' -e
's/^/NVIDIA_/' /proc/driver/nvidia/params\""
ENV{NVIDIA_PRESERVE_VIDEO_MEMORY_ALLOCATIONS}!="1", GOTO="gdm_disable_wayland"
IMPORT{program}="/bin/sh -c 'echo NVIDIA_HIBERNATE=`systemctl is-enabled
nvidia-hibernate`'"
ENV{NVIDIA_HIBERNATE}!="enabled", GOTO="gdm_disable_wayland"
IMPORT{program}="/bin/sh -c 'echo NVIDIA_RESUME=`systemctl is-enabled
nvidia-resume`'"
ENV{NVIDIA_RESUME}!="enabled", GOTO="gdm_disable_wayland"
IMPORT{program}="/bin/sh -c 'echo NVIDIA_SUSPEND=`systemctl is-enabled
nvidia-suspend`'"
ENV{NVIDIA_SUSPEND}!="enabled", GOTO="gdm_disable_wayland"
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https://bugs.launchpad.net/bugs/1969243
Title:
gdm 42.0-1ubuntu4 no longer shows Wayland option
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