Comment 2 for bug 907923

StacktraceTop:
 __GI___assert_fail (assertion=0x1079419 "ret != inval_id", file=0x107938a "../../src/xcb_io.c", line=528, function=0x107949e "_XAllocID") at assert.c:81
 _XAllocID (dpy=0x8bf2200) at ../../src/xcb_io.c:528
 XRenderCreatePicture (dpy=0x8bf2200, drawable=67114850, format=0x8c8b140, valuemask=256, attributes=0xbfd989fc) at ../../src/Picture.c:90
 _cairo_xlib_surface_ensure_src_picture (surface=0x91e9ab8, display=<optimized out>) at /build/buildd/cairo-1.10.2/src/cairo-xlib-surface.c:1070
 _cairo_xlib_surface_set_attributes (display=0x92c8ca8, surface=0x91e9ab8, attributes=0xbfd98af0, xc=25, yc=421) at /build/buildd/cairo-1.10.2/src/cairo-xlib-surface.c:1770