On Wednesday 16 September 2015 21:08, Tim WIlliams wrote: > Hi, > > Thanks for the answer. > > > Look for a package called gtk-qt-engine, or something like that. > > According to my package manager gtk-qt-engine isn't installed. > > If I login using XFCE instead of TDE, then the problem goes away, so > this is definitely related to something that's activated by using TDE. > > > (I'm assuming that "non-TDE apps" means "GTK applications".) > > I haven't checked many apps to which tool kits are and are not affected, > but OpenOffice, Firefox and Mageia control centre are all exhibiting the > problem. The Mageia control centre is a particular problem because the > alternative styles are making the scroll bar on the software manger very > "jumpy". In Firefox my the standard them gets a load of thick black > lines which don't look very nice. > > Any other suggestions? > > Thanks in advance. > > Tim W Hi Tim, I had similar problems with Opera which was badly drawn resulting in a thick black line across the tab bar and other problems with the tool bars not displaying correctly. I eventually resolved the problem by installing the packages below gtk2-engines-murrine murrine-themes Having installed them open tde control centre (system settings) appearance/gtk styles and fonts. Under GTK Styles choose use another style and chose one of the Murrine styles. I chose MurrinaBlue but probably any of the murrine styles will work. After a reboot I found that Opera was fixed. This was with Xubuntu Lucid 10.04 and Precise 12.04 both with TDE 18.104.22.168 Hoping this may resolve your problem. Nigel.