On 08/04/2018 03:00 AM, Felix Miata wrote: Felix, That is controlled by 'kcmshell display' module (it is/was tdecmshell on TDE). You can verify that it is found (it should be if it is all blank) with 'tdecmshell --list'. The primary source for the tdecmshell display page is: /tde/main/tdebase/kcontrol/display/display.cpp Apparently the following code is failing (old version probably similar to current: TDECModule *kcm = TDECModuleLoader::loadModule( name, page ); if ( kcm ) { top->addWidget( kcm ); m_tabs->addTab( page, label ); connect( kcm, TQT_SIGNAL( changed(bool) ), TQT_SLOT( moduleChanged(bool) ) ); m_modules.insert(kcm, false); } else delete page; (so it appears 'delete page' is being called in your case) The actual sliders and widgets that would be created if the module was found would be in: /tde/main/tdebase/kcontrol/displayconfig/displayconfig.cpp The tdelibs source isn't any more helpful on exactly which module the 'display' relies on, see /tde/main/tdelibs/tdecmshell/main.cpp and /tde/main/tdelibs/tdeui/tdecmodule.cpp Sorry not much more help than being able to tell you where to look in the source. The only thing I can think of would be that something wasn't set properly when the display.moc was generated -- but you would expect that would be confirmable by everybody. Do you get any debug messages/warnings? (I think it is kdWarning(780) if the module can't be found) -- David C. Rankin, J.D.,P.E.