From: adress@signatu.re   
      
   Am Sun, 12 Dec 2021 18:27:19 +0100 schrieb Aragorn:   
      
   > On 12.12.2021 at 16:54, eho scribbled:   
   >   
   (...)   
   >> org.kde.okular.ui: Unable to inhibit screensaver   
   >> [...]   
   >>   
   >> What has okular to do with screensaver?   
   >   
   > 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.   
      
   Thus it seems that starting a kde program like okular in xfce4 generates   
   problems, or at least error messages?  So that, as long as I stick   
   to xfce4, I should avoid using kde programs like okular.   
      
   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?   
      
   >> 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?   
      
   I tried to compile evince and zathura from SBo, but it did not work.   
   Alien seems not to have them.   
      
   Thanks Erich   
      
      
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