Expected login behavior with gnome?

[Richard Shaw]

I had forgotten that my computer shut down (bad UPS battery) and had
rebooted it but not logged in.

Later that day I typed in my password forgetting that i hadn't logged in
while I waited for the monitor to wake up (bad practice, I know...)

Interestingly, when I clicked on my login name, the password field was
populated and I was able to login without retyping it.

Is this behavior expected?

Thanks,
Richard

[Tim]

Allegedly, on or about 07 October 2014, Richard Shaw sent:
>  Later that day I typed in my password forgetting that i hadn't
> logged
>  in while I waited for the monitor to wake up (bad practice, I know...)
>  
>  Interestingly, when I clicked on my login name, the password field was
>  populated and I was able to login without retyping it.  
Keyboard buffer?

You can do something similar by opening a new terminal, and starting to
type before there's a cursor showing.  Quite often, what you typed is in
the keyboard buffer, and appears momentarily afterwards.

That sort of thing's generally a bad idea, though.  Input devices
shouldn't accept input before appearing as ready, and should really
clear the buffer of anything queued in as they open up.

Nor should pop-up input devices (e.g. interrupting instant messenger
windows), be allowed to jump up and grab your keypresses while you're in
the middle of typing in something else.  It's a security problem.  

e.g. You've opened something, you're logging in, you've just entered
your username, you're just about to type in your password, and some
instant messenger window pops up just as you type in your password and
hit enter.  I've seen that sodding behaviour far too often.

-- 
[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.

George Orwell's '1984' was supposed to be a warning against tyranny, not
a set of instructions for supposedly democratic governments.

ZNQR LBH YBBX

[Lars E. Pettersson]

On 10/07/14 15:59, Richard Shaw wrote:
>  Interestingly, when I clicked on my login name, the password field
> was
>  populated and I was able to login without retyping it. 
This have happened to me at numerous times, but I am only greeted with a 
dark gray screen, and have to kill X or reboot (depending on if 
ctrl-alt-bs is configured or not).

Are you able to login fully when this happens? Are you using Gnome?

Lars
-- 
Lars E. Pettersson <lars(a)homer.se&gt;
http://www.sm6rpz.se/

[Richard Shaw]

On Tue, Oct 7, 2014 at 10:35 AM, Lars E. Pettersson <lars(a)homer.se&gt; wrote:

>  On 10/07/14 15:59, Richard Shaw wrote:
>
> > Interestingly, when I clicked on my login name, the password field was
> > populated and I was able to login without retyping it.
> >
>
>  This have happened to me at numerous times, but I am only greeted with a
>  dark gray screen, and have to kill X or reboot (depending on if ctrl-alt-bs
>  is configured or not).
>
>  Are you able to login fully when this happens? Are you using Gnome? 

Yup, Fedora 20 x86_64, fully updated.

Thanks,
Richard