I just noticed this: $ pacman -Qi xfce4-session | grep -A 4 Optional\ Deps | tail -2 xlockmore: for locking screen with xflock4 [installed] slock: for locking screen with xflock4 [installed] It's indeed xlock, that is and should be used by xflock4, furthermore xlock suffers from the validation failure, too. Btw. I noticed it because I run something posted by Ralph Corderoy [1]. $ pactree -ld1 -r pam | sed 1d | xargs -rtn1 pkgfile -l |& egrep $'\t''/etc/pam\.d/.|^pkgfile' | tail -1 pkgfile -l xlockmore So I tested $ sudo cp -ai /etc/pam.d/cinnamon-screensaver /etc/pam.d/xlock and this actually solved the issue for xlock, as well as for xflock4 :). I'll file a bug report against xlockmore later. Regards, Ralf [1] On Mon, 11 Feb 2019 16:32:24 +0000, Ralph Corderoy wrote:
pactree -ld1 -r pam | sed 1d | xargs -rtn1 pkgfile -l |& egrep $'\t''/etc/pam\.d/.|^pkgfile'