This bug was fixed in the package lightdm - 1.17.6-0ubuntu1
---------------
lightdm (1.17.6-0ubuntu1) xenial; urgency=medium
* New upstream release:
- Don't write $DISPLAY into tty line in utmp/btmp. (LP: #1380364)
* debian/guest-account.sh:
* debian/guest-session.profile:
* debian/rules:
- Don't overwrite .profile file from skeleton session, append it instead
-- Robert Ancell <robert.anc...@canonical.com> Tue, 15 Mar 2016
15:47:08 +1300
** Changed in: lightdm (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1380364
Title:
lightdm writes XDISPLAY instead of tty device name to utmp record
Status in Light Display Manager:
Fix Committed
Status in lightdm package in Ubuntu:
Fix Released
Bug description:
Until now, I've been using good old gdm-2.20.11 and wanted to switch
to lightdm-1.12.1. If you list users logged in via the 'w' or 'who'
command, it shows you who is logged in and what they are doing.
Especially, on which tty. Example:
USER TTY LOGIN@ IDLE JCPU PCPU WHAT
user tty9 03Oct14 16days 1:52m 0.01s /bin/sh /etc/xdg/xfce4/xinitrc
-- /etc/X11/xinit/xserverrc
Also, 'who' gives this information:
user tty9 Oct 3 22:34 (:20)
However, lightdm does not follow that tradition. Instead, it prints :0
instead of the actual tty, and something weird for other values (like
?xdm? instead of the idle value etc.)
'w':
USER TTY LOGIN@ IDLE JCPU PCPU WHAT
user :0 19:50 ?xdm? 23.82s 0.01s /bin/sh /etc/xdg/xfce4/xinitrc
-- /etc/X11/xinit/xserverrc
Note: :0 is not tty, it is DISPLAY env.
'who':
user :0 2014-10-12 19:50 (:0)
The same for this one. I wonder, is this a bug (to me it seems so,
because for every other program the correct values are reported)?
It is a problem for me, because I have written scripts for automation
etc. that parse w and who output to determine which tty is in use by
which DISPLAY.
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