New comment by ackalker on void-packages repository https://github.com/void-linux/void-packages/issues/12760#issuecomment-507331014 Comment: Anyway, after installing the `mesa-ati-dri-dbg` package, I get the following backtrace with a bit more detail: ```sh $ gdb -q vdpauinfo Reading symbols from vdpauinfo... Reading symbols from /usr/lib/debug//usr/bin/vdpauinfo... (gdb) directory /masterdir/builddir/mesa-19.1.1/build Source directories searched: /masterdir/builddir/mesa-19.1.1/build:$cdir:$cwd (gdb) set pagination off (gdb) run Starting program: /usr/bin/vdpauinfo [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". display: :0 screen: 0 warning: the debug information found in "/usr/lib/vdpau/libvdpau_r300.so.1.0.0" does not match "/usr/lib/vdpau/libvdpau_nouveau.so.1" (CRC mismatch). [New Thread 0x7fffefbda700 (LWP 23390)] Thread 1 "vdpauinfo" received signal SIGSEGV, Segmentation fault. nv50_ir::AlgebraicOpt::handleCVT_CVT (this=, cvt=0x555555802590) at ../src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp:2085 2085 if (insn->saturate || (gdb) bt #0 nv50_ir::AlgebraicOpt::handleCVT_CVT (this=, cvt=0x555555802590) at ../src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp:2085 #1 0x00007ffff72c1696 in nv50_ir::AlgebraicOpt::visit (this=0x7fffffffc140, bb=) at ../src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp:2351 #2 0x00007ffff7288210 in nv50_ir::Pass::doRun (this=0x7fffffffc140, func=, ordered=, skipPhi=false) at ../src/gallium/drivers/nouveau/codegen/nv50_ir_bb.cpp:500 #3 0x00007ffff72882bf in nv50_ir::Pass::doRun (this=0x7fffffffc140, prog=, ordered=false, skipPhi=false) at ../src/gallium/drivers/nouveau/codegen/nv50_ir_inlines.h:413 #4 0x00007ffff72b0deb in nv50_ir::Program::optimizeSSA (this=this@entry=0x5555557ecdb0, level=3) at ../src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp:4005 #5 0x00007ffff72859b7 in nv50_ir_generate_code (info=info@entry=0x5555558440b0) at ../src/gallium/drivers/nouveau/codegen/nv50_ir.cpp:1267 #6 0x00007ffff72ddceb in nvc0_program_translate (prog=prog@entry=0x55555582b5a0, chipset=, debug=debug@entry=0x5555557e7798) at ../src/gallium/drivers/nouveau/nvc0/nvc0_program.c:638 #7 0x00007ffff72e5dac in nvc0_cp_state_create (pipe=0x5555557e73d0, cso=0x7fffffffce20) at ../src/gallium/drivers/nouveau/nvc0/nvc0_context.h:292 #8 0x00007ffff70034f3 in vl_compositor_cs_create_shader (c=c@entry=0x5555557c18b8, compute_shader_text=) at ../src/gallium/auxiliary/vl/vl_compositor_cs.c:433 #9 0x00007ffff6ffcf2a in init_shaders (c=0x5555557c18b8) at ../src/gallium/auxiliary/vl/vl_compositor.c:74 #10 vl_compositor_init (c=c@entry=0x5555557c18b8, pipe=) at ../src/gallium/auxiliary/vl/vl_compositor.c:767 #11 0x00007ffff6fecdcb in vdp_imp_device_create_x11 (display=, screen=, device=0x7fffffffe03c, get_proc_address=0x7fffffffdfd8) at ../src/gallium/state_trackers/vdpau/device.c:129 #12 0x00007ffff7e6daf5 in vdp_device_create_x11 () from /usr/lib/libvdpau.so.1 #13 0x00005555555554ad in main (argc=, argv=0x7fffffffe168) at vdpauinfo.cpp:488 (gdb) print insn $1 = (nv50_ir::Instruction *) 0x0 (gdb) # boom! that's guaranteed to blow up yeah... ``` Although there's still a warning, at least the symbol names now look reasonable.