As Ray Strode explains, plymouth --has-active-vt may fail if the user
passes console=ttyS0 or something other not corresponding to
console=tty0, because plymouth is outputing to the serial console and
not a VT in this case.
{ flock -s 9;
# Prompt for password with plymouth, if installed and running.
- if [ -x /bin/plymouth ] && /bin/plymouth --has-active-vt; then
+ if [ -x /bin/plymouth ]; then
/bin/plymouth ask-for-password \
--prompt "$ply_prompt" --number-of-tries=$ply_tries \
--command="$ply_cmd"