This resolved the issue for me:
https://askubuntu.com/a/968265/89202
"If you wish to do it permanently, edit
/etc/gdm3/custom.conf and uncomment the line
#WaylandEnable=false by removing the # in front.
Save the file and then on reboot you will never see the cog asking for which session to use."
This resolved the issue for me:
https:/ /askubuntu. com/a/968265/ 89202
"If you wish to do it permanently, edit
/etc/gdm3/ custom. conf and uncomment the line
#WaylandEnable= false by removing the # in front.
Save the file and then on reboot you will never see the cog asking for which session to use."