[Pkg-xfce-devel] Bug#780025: dm-tool: Document light-locker needed for dm-tool lock

[Ben Armstrong]

Package: lightdm
Version: 1.10.3-3
Followup-For: Bug #780025

In #780024 I discovered the failured the root cause of my inability to
lock the screen was that I did not have xscreensaver installed and did
not replace it with an alternative screen locker. It appears that
light-locker is the appropriate alternative for lightdm. But dm-tool(1)
doesn't mention or cross-reference via SEE ALSO light-locker(1). I think
it should, since without it, "dm-tool lock" just looks broken.

After installing light-locker, logging out and logging in, this is the
new behaviour I observed if I trigger a screen lock (either via lxpanel >
lxsession-logout > Lock Screen, or via 'dm-tool lock'):

1. A new VT is opened for the locker dialog on vt8.

2. If I ctrl-alt-f7 to go back to vt7, a message telling me the session
   is locked and I'll be redirected in a few sessions is displayed. After
   waiting a few seconds, I am redirected back to the locker dialog on
   vt8.

Therefore, I'm retitling this bug and dropping severity to minor, as it
is simply a doc problem now.

Please also consider if lightdm should at least have Suggests:
light-locker.

Thanks,
Ben