lightdm or gdm?

[Bryan Quigley]

On Fri, Apr 21, 2017 at 6:03 PM, Jeremy Bicha <jbicha at ubuntu.com> wrote:
> On Fri, Apr 21, 2017 at 4:56 PM, Bryan Quigley
> <bryan.quigley at canonical.com> wrote:
>> One of my concerns for a gdm change is are we ready to reorg our VTs?
>
> GDM could default to VT7 if we really wanted to, but why should it
> except for tradition?
>
> I think it's easier for users to start counting at 1 rather than 7.
> And it also matches how most other distros work now. (Debian switched
> gdm3 to vt1 before Ubuntu did.)
>
> lightdm could default to VT1 too.

I completely agree we can switch this up and improve things. Based on
how Gdm3 does VTs (possibly random VT) we *have* to consider
rethinking it at least a bit.

I've got some ideas on how we could make it easier for the average
user.  I've seen users accidentally press Ctrl-Alt-number and have no
idea what happened - or how to get back.  (Most times it was
Ctrl-Alt-1 (then 4, then 3) so actually gdm3 would improve that a
bit!)

It looks like we start ttys on demand. We only start the tty1 getty
automatically (for boot) and the others actually start when you go to
them.  Neat!

My big ask is that we have a consistent Ctrl-Alt-XX (let's say F12)
combination that is for where users will always get the same thing
they can use if things go wrong (or can be instructed over the
phone/etc).  That is true today with Ctrl-Alt-F1 - it always has a
getty on it. This can just be a standard getty login or we can make it
more of a recovery menu kind of thing (happy to spec it out/make a
demo if their is interest).

>
>> Is their a process I can kill from a user session to break the lock?
>
> loginctl list-sessions
> # Find the session you are using. If the session is named '2', run
> loginctl unlock-session 2
>
> That works with gdm3, but it didn't seem to work when I tried with
> unity-greeter on lightdm.

With that and Robert's post it looks like they behave in quite similar ways.

Thanks!
Bryan