Re: 'who' & 'users' not working in lxqt (fed26)

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On Fri, 2017-08-04 at 16:39 +0800, Ed Greshko wrote:
> 
> 
> I will note that I have 2 test VM's installed.  One pure KDE.  One
> pure LXQt.  Both
> are using and have the same version of sddm installed.  Which is
> sddm-0.14.0-10.fc26.
> 
> On the KDE system when logged in the who command will show.
> 
> [egreshko@acer lib]$ who
> egreshko pts/0        2017-07-27 19:42 (:0)
> 
> While nothing will be returned on the LXQt system.
> 
> So,  I then installed KDE Plasma Workspaces on the formerly pure LXQT
> system.
> 
> Now when I login to an LXQt session "who" does show the graphical
> session....
> 
> [egreshko@meimei testing]$ cat who.lxqt
> egreshko pts/0        2017-08-04 16:03 (:0)
> 
> And the environment shows...
> 
> XDG_MENU_PREFIX=lxqt-
> LXQT_SESSION_CONFIG=session
> HOSTNAME=f26-lxqt.greshko.com
> DESKTOP_SESSION=/usr/share/xsessions/lxqt
> QT_QPA_PLATFORMTHEME=lxqt
> SSH_ASKPASS=/usr/libexec/openssh/lxqt-openssh-askpass
> QT_PLATFORM_PLUGIN=lxqt
> XDG_CURRENT_DESKTOP=X-LXQt
> 
> Now, adding KDE resulted in 354 additional packages being installed.
> 
> One of them did the trick.   I suppose I could try and track down the
> magic package....

I have been doing some searching on the web and found (among others
in other languages):

1) Apparently the communication SDDM with /var/run/utmp was problematic
   in the beginning. 'utmp' is listed as something to take up in this
   TODO list of 'unfinished' business in SDDM (2014):
   https://github.com/sddm/sddm/wiki/TODO

2) The problems with 'who', 'w', 'users', 'last' are discussed
   extensively in a Mageia bugzilla from 2016/2017:
   https://bugs.mageia.org/show_bug.cgi?id=18032
   The 'blame' is laid on SDDM (which "can't run a script as root"?
   to correct the problem). 
   But something seems to have been "solved" in KDE/Plasma but not in  
      LXQT (Ed Greshko and web reports)

3) The combination SDDM, LXQT, Systemd is (or can be) flaky sometimes.
   https://bbs.archlinux.org/viewtopic.php?id=227292
   I too have experienced problems like this.

4) That this is a problem with SDDM-utmp (or whatever) is clear
   from the following;
   Login from the SDDM screen in LXQT and 'who', w', 'users', 'last'
   do NOT show the users, but switch to a console (CTL-ALT-F3) (or
   login to level 3 directly) and everything works as expected.
   
AV
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