password restrictions are different in the GUI and on the command line.

[Ralf Mardorf]

On Sun, 17 Jul 2016 18:34:18 +0100, Colin Law wrote:
>> On Sun, Jul 17, 2016 at 07:01:41PM +0200, s.achterop at rug.nl wrote:  
>>> I don't have a /etc/X11/xorg.conf or /etc/X11/xorg.conf.d
>>> So how is keyboard.conf going to be called?

You could edit it using an editor, that's how I did it. _But_ I use
this keyboard xorg.conf for my Arch install, not for my Ubuntu 16.04
install. It not necessarily is required for lightdm, just in some
circumstances it might be required.

>@OP do you have the time and inclination to experiment further and try
>to determine exactly what is causing the problem?  I have difficulty
>believing it is the length of pwd.  I currently have a six character
>pwd on one of my machines consisting of letters and numbers and it
>works fine.

I agree with Colin. Consider to add a user named   dummy   with the
password   dummy   , this should work, even while the password is just
5 chars short, available by each dictionary and equal to the user name.
This is really a weak password and it wouldn't become much stronger, if
it would be   crashtestdummy1234   . Long not necessarily is stronger
regarding software that tries to crack passwords.

Most of the times I use weak passwords, because most data anyway would
be available by mounting my unencrypted partitions from a live media.
Strong passwords are good, if required, not in general for a home
computer. I don't have a lockable refrigerator, this could be more
dangerous than easy access to my unimportant computer data.

Regards,
Ralf