From: ander@disroot.org   
      
   On 2021-12-12, eho  wrote:   
   > Hello.   
   >   
   > Using current 64 with xfce4, when I open a pdf with okular,   
   > it opens flawlessly, but on the terminal I get the   
   > message:   
   >   
   > Icon theme "gnome" not found.   
   > Icon theme "crystalsvg" not found.   
   >   
   > Installed every theme* from SBo.   
   >   
   > But now, since an upgrade,   
   > when I open the pdf and close it, above message appears.   
   > BUT when I inside okular start presentation mode (STRG+SHIFT+P),   
   > this comes up (command line):   
   >   
   > org.kde.okular.ui: Unable to inhibit screensaver   
   > QDBusError("org.freedesktop.DBus.Error.ServiceUnknown", "The name   
   > org.freedesktop.ScreenSaver was not provided by any .service files")   
   >   
   > Killed xfce-screensaver, which didn't work anyway, same message.   
   >   
   > xpdf triggers no error message, but it seems to have no presentation mode.   
   > gv : no error message.   
   >   
   > I guess I configured something badly.   
   > But, above all, I'd like to understand.   
   >   
   > What has okular to do with screensaver?   
   > Why did this message come up after an upgrade   
   > (sadly I don't remember which)?   
   >   
   > cheers Erich   
   >   
      
   Try installing oxygen-icons (packages, not SBo). It will fix most   
   icon issues outside KDE if you didn't install it fully.   
   On the screensaver, maybe xscreensaver and the xfce4-screensaver one clash   
   with each other. I'd remove xscreensaver with slackpkg.   
      
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