Allegedly, on or about 29 December 2013, Robert Moskowitz sent:
it sure seems like at first install, <ctl-alt-l> was working,
but could have just been another of those senior moments.
For several years, through different incarnations of Fedora, and on
different hardware, I've had computers where the lock-screen hotkey
worked, always worked, once worked until something was customised, or
never worked. With the last two being insurmountable, never again would
it work.
So, as far as I can see, what you've said doesn't sound impossible.
--
[tim@localhost ~]$ uname -rsvp
Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64
All mail to my mailbox is automatically deleted, there is no point
trying to privately email me, I will only read messages posted to the
public lists.