From: thorongil@telenet.be   
      
   On 12.12.2021 at 19:49, eho scribbled:   
      
   > Am Sun, 12 Dec 2021 18:27:19 +0100 schrieb Aragorn:   
   >    
   > > Okular is a KDE-native application.  In its presentation mode, it   
   > > will prevent the KDE-specific screensaver (or screen locker) from   
   > > kicking in.   
   > >   
   > > It does this by communicating with the window manager by way of   
   > > qdbus, which is a qt-specific IPC bus that KDE software uses quite   
   > > extensively. But you're running XFCE, which is entirely GTK-based.     
   >    
   > Thanks.  That explains it.  I logged into a plasma wayland session,   
   > and the error message did not show up.   
      
   Plasma is great.  Wayland, not so much yet at this point. ;)   
      
   > Thus it seems that starting a kde program like okular in xfce4   
   > generates problems, or at least error messages?   
      
   Well, most of those error messages should rather be interpreted as   
   warnings.  They don't stop the application from working.   
      
   > So that, as long as I stick to xfce4, I should avoid using kde   
   > programs like okular.   
      
   Not necessarily.  But you do have to keep in mind that the application   
   only performs optimally when used in the environment that it was   
   designed for.   
   >   
   > Well then, another problem came up.  I tried to just log out from   
   > xfce4- session by using the "log out" button, but the screen just   
   > froze.  Had to do that manually. Is this a xfce4 or slackware current   
   > problem?   
      
   It might just be a glitch in Current.  You have to liken it somewhat to   
   the Testing branches of other distributions.  The software is   
   constantly evolving, so getting it to work flawlessly is a moving   
   target.   
      
   > >> Why did this message come up after an upgrade (sadly I don't   
   > >> remember which)?     
   > >   
   > > Probably because of a change upstream, or perhaps because of a   
   > > change in packaging.     
   >    
   > This seems to mean that a kde program will not always run under other    
   > desktop environments?   
      
   It will, but — see higher up — not optimally.  A lot also depends on   
   whether the application ships with a distro-specific default   
   configuration or not — hence my reference to the packaging.   
      
   --    
   With respect,   
   = Aragorn =   
      
   --- SoupGate-Win32 v1.05   
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