Comment 16 for bug 1055166

This seems to happen here when compiz tries to create an empty texture (0x0), see bt at http://pastebin.ubuntu.com/7027036/

Some highlights:
#9 0x00007fbfc0f16429 in unity::compiz_utils::PixmapTexture::PixmapTexture (this=0x227a968, w=0, h=0) at /home/marco/Dev/unity/trunk/unity-shared/CompizUtils.cpp:115

The text buffer has random geometries at this point:
#2 drisw_update_tex_buffer (drawable=<optimized out>, ctx=<optimized out>, res=<optimized out>) at ../../../../../../../src/gallium/state_trackers/dri/sw/drisw.c:320
        dPriv = <optimized out>
        st_ctx = <optimized out>
        pipe = 0xc33200
        transfer = 0x2dd5490
        x = 36615400
        y = 0
        w = -711233149
        h = 32703
        ximage_stride = 1450034700
        line = 32702
        cpp = <optimized out>