Display problems on openSUSE Leap 42.1

[Rob McCathie]

Try disabling Xfce's screen compositing (which is an Xrender-only 
compositor) and install a compositor that's GL-capable, such as Compton 
(make sure you start Compton with the appropriate command line 
parameters so it uses it's GLX backend, not Xrender).

Do some tests starting it from a terminal, if it resolves the issue make 
an autostart entry for it in Xfce's Session and Startup settings area.

--
Regards,

Rob McCathie

On 22/05/16 21:51, Klaus Zeitler wrote:
> Hello,
> I recently upgraded to openSUSE Leap 42.1 and now I'm experiencing
> a rather annoying problem with Xfce.
> Sometimes all application windows disappear from the desktop and
> all that is left to see is the panel (sometimes an already deleted
> application window is shown as well). When I hover with the mouse over
> the desktop the application windows are partially redrawn. I have to
> either switch workspaces or execute show-desktop twice to enforce
> a redisplay of all application windows.
> First I thought (and still do) it has something to do with notifications.
> I had banshee running on workspace-2 and every time a new song started
> the notification that displays the new title caused the desktop screen
> to blank (but only if I had switched to one of the other workspaces).
> I disabled notifications in banshee and it's now happening less often.
> But still every once in a while the windows are blanked out and now
> I can't see a pattern anymore, when/why it will happen.
>