Hi,

I'm getting strange crashes since I updated my xorg to the latest packages in Debian testing.

The main error reported in gdb is this:

pd: ../../../../../src/mesa/tnl_dd/t_dd_vb.c:298: mga_interp_extras: Assertion `VB->ColorPtr[1]->stride == 4 * sizeof(GLfloat)' failed. Program received signal SIGABRT, Aborted. [Switching to Thread -1211259200 (LWP 15106)] 0xb7d057c7 in raise () from /lib/tls/libc.so.6

And here's a backtrace when this happens:

(gdb) bt #0 0xb7d057c7 in raise () from /lib/tls/libc.so.6 #1 0xb7d0706b in abort () from /lib/tls/libc.so.6 #2 0xb7cfe735 in __assert_fail () from /lib/tls/libc.so.6 #3 0xb519097a in mgaChooseVertexState () from /usr/lib/dri/mga_dri.so #4 0xb5216f90 in _tnl_disassem_vba_insn () from /usr/lib/dri/mga_dri.so #5 0xb52195a5 in _tnl_disassem_vba_insn () from /usr/lib/dri/mga_dri.so #6 0xb521c856 in _tnl_RenderClippedLine () from /usr/lib/dri/mga_dri.so #7 0xb5209ecf in _tnl_run_pipeline () from /usr/lib/dri/mga_dri.so #8 0xb5151613 in mgaEmitHwStateLocked () from /usr/lib/dri/mga_dri.so #9 0xb523796e in _tnl_flush_vtx () from /usr/lib/dri/mga_dri.so #10 0xb523036c in _tnl_FlushVertices () from /usr/lib/dri/mga_dri.so #11 0xb51ca992 in _mesa_Translatef () from /usr/lib/dri/mga_dri.so #12 0xb60d3918 in glTranslatef () from /usr/lib/libGL.so.1 #13 0xb63dd100 in translateXYZ::render () from /usr/lib/pd/extra/Gem.pd_linux #14 0xb6380d3c in GemBase::gem_renderMess () from /usr/lib/pd/extra/Gem.pd_linux #15 0xb6380f34 in GemBase::gem_MessCallback () from /usr/lib/pd/extra/Gem.pd_linux #16 0x0809fb68 in pd_typedmess (x=0xbfe65680, s=0x2, argc=2, argv=0xbfe65680) at m_class.c:665 Previous frame inner to this frame (corrupt stack?)

This is with Chris McCormick's Ergates patch (http://mccormick.cx/projects/ergates/) however I've seens this happen with other patches as well, however I couldn't really nail it so far to a single object.

Gem is current CVS from today, compiled with "--disable-NV", otherwise defaults. I also get the same error with an older version of Gem-CVS, like some weeks ago. My card is a Matrox G450.

Any ideas? More info needed?

Ciao