This issue is caused by lightdm running /usr/sbin/lightdm-session instead of /etc/X11/Xsession.
The simplest workaround for me was: - introduce has_option functon as 1st step in Xsession.d sourced scripts - as root create file /etc/X11/Xsession.d/01custom-has-option with following content: #check if has_option is already defined; if not, define has_option 2>1 > /dev/null || has_option() { # Ensure that a later no-foo overrides an earlier foo if [ "$(echo "$OPTIONS" | grep -Eo "^(no-)?$1\>" | tail -n 1)" = "$1" ]; then return 0 else return 1 fi } - logout and login Details: - /etc/X11/Xsession introduces has_option shell function that check if Xsession.options contains predefined option - /etc/X11/Xsession sources all files under /etc/X11/Xsession.d in alphabetic order - as the scripts are sourced they maintain the same environemnt and definitions of variables or functions as Xsession - however, lightdm uses lightdm-session that also sources /etc/X11/Xsession.d/* BUT does NOT define has_option function - provided script checks if the function has_option already exists (Xsession is in play) and if not (lightdm-session's game) it defines it the same way as is in /etc/X11/Xsession Alternative solutions: - modify lightdm-session to contain has_option the same way as /etc/X11/Xsession - modify (create) /etc/lightdm/lightdm.conf containing: [Seat:*] session-wrapper=/etc/X11/Xsession - requires reboot; it did not work ok for 100% as my .profile env vars were not correctly propagated -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1922414 Title: ssh-agent fails to start (has_option: command not found) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1922414/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp