Comment 23 for bug 408016

I would like this to be re-opened.

The is a real bug in wine: it sends invalid xrender glyph data to the X11 server and for some (but not all) video drivers this crashes the X server. This also indicates a bug in the X server (the existence of one bug does not deny the existence of others). I can tell you about the X11 bug, it is a failure to check the NULL pointer in the file render.c and the function ProcRenderAddGlyphs() and a patch is available here --

https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/408016

That said, I have no idea where the wine bug might be lurking other than that it is something to do with client-side font handling and the xrender extension. If you disable xrender in the X11 config or if you recompile wine with client side fonts disabled then the bug goes away (although many programs run into other different problems with this particular feature disabled).