Build : Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7pre) Gecko/20100921 Firefox/4.0b7pre This is a new crash signature that first appeared in b7pre/20100916 build. b7pre/20100916 : 1 crash b7pre/20100917 : 3 crashes b7pre/20100921 : 3 crashes It happens only with Intel HD graphics, so it is different from bug 527540 which is NVIDIA related. The graphic driver version is almost up-to-date : 8.15.10.2182, 2189, 2202 Signature ntdll.dll@0x38c19 UUID 28f9c3ef-f679-43a4-87e0-68e162100921 Time 2010-09-21 09:11:22.629424 Uptime 3 Install Age 3 seconds since version was first installed. Product Firefox Version 4.0b7pre Build ID 20100921041551 Branch 2.0 OS Windows NT OS Version 6.1.7600 CPU x86 CPU Info GenuineIntel family 6 model 37 stepping 5 Crash Reason EXCEPTION_ACCESS_VIOLATION_WRITE Crash Address 0x5571bd4 App Notes AdapterVendorID: 8086, AdapterDeviceID: 0046 Crashing Thread Frame Module Signature [Expand] Source 0 ntdll.dll ntdll.dll@0x38c19 1 ntdll.dll ntdll.dll@0x38b27 2 nvwgf2um.dll nvwgf2um.dll@0x59226 3 nvwgf2um.dll nvwgf2um.dll@0x167b08 4 nvwgf2um.dll nvwgf2um.dll@0x3c3dd 5 nvwgf2um.dll nvwgf2um.dll@0x3c4b9 6 igd10umd32.dll igd10umd32.dll@0x1cb3d 7 igd10umd32.dll igd10umd32.dll@0x20c9b 8 igd10umd32.dll igd10umd32.dll@0x1cb3d 9 igd10umd32.dll igd10umd32.dll@0x1d84b 10 d3d10_1core.dll d3d10_1core.dll@0x13894 11 d3d10_1core.dll d3d10_1core.dll@0x1a4f5 12 d3d10_1core.dll d3d10_1core.dll@0x1b580 13 d3d10_1core.dll d3d10_1core.dll@0xa1b7 14 dxgi.dll dxgi.dll@0x4423 15 dxgi.dll dxgi.dll@0x43f0 16 dxgi.dll dxgi.dll@0x4817 17 dxgi.dll dxgi.dll@0x4897 18 dxgi.dll dxgi.dll@0x40e4 19 dxgi.dll dxgi.dll@0x405c 20 d3d10_1core.dll d3d10_1core.dll@0x1b965 21 d3d10_1core.dll d3d10_1core.dll@0x1c98d 22 d3d10_1core.dll d3d10_1core.dll@0x1de60 23 d3d10_1core.dll d3d10_1core.dll@0x1e094 24 d3d10_1core.dll d3d10_1core.dll@0x90ce 25 dxgi.dll dxgi.dll@0x3e9a 26 dxgi.dll dxgi.dll@0x4264 27 dxgi.dll dxgi.dll@0x4212 28 dxgi.dll dxgi.dll@0x41be 29 d3d10_1core.dll d3d10_1core.dll@0xcf3a 30 d3d10_1core.dll d3d10_1core.dll@0x1c115 31 d2d1.dll d2d1.dll@0x2f59d 32 d2d1.dll d2d1.dll@0x2f431 33 d2d1.dll d2d1.dll@0x2ddd8 34 d2d1.dll d2d1.dll@0x11bd7 35 xul.dll cairo_d2d_surface_create_for_handle gfx/cairo/cairo/src/cairo-d2d-surface.cpp:3613 36 xul.dll gfxD2DSurface::gfxD2DSurface gfx/thebes/gfxD2DSurface.cpp:54 37 xul.dll mozilla::layers::ThebesLayerD3D9::CreateNewTexture gfx/layers/d3d9/ThebesLayerD3D9.cpp:467 38 xul.dll mozilla::layers::ThebesLayerD3D9::RenderLayer gfx/layers/d3d9/ThebesLayerD3D9.cpp:203 39 xul.dll mozilla::layers::ContainerLayerD3D9::RenderLayer gfx/layers/d3d9/ContainerLayerD3D9.cpp:221 40 xul.dll mozilla::layers::LayerManagerD3D9::Render gfx/layers/d3d9/LayerManagerD3D9.cpp:291 41 xul.dll mozilla::layers::LayerManagerD3D9::EndTransaction gfx/layers/d3d9/LayerManagerD3D9.cpp:159 42 xul.dll nsDisplayList::PaintForFrame layout/base/nsDisplayList.cpp:452 43 xul.dll nsLayoutUtils::PaintFrame layout/base/nsLayoutUtils.cpp:1429 44 xul.dll PresShell::Paint layout/base/nsPresShell.cpp:6089 45 xul.dll nsViewManager::RenderViews view/src/nsViewManager.cpp:447 46 xul.dll nsViewManager::Refresh view/src/nsViewManager.cpp:413 47 xul.dll nsViewManager::DispatchEvent view/src/nsViewManager.cpp:913 48 xul.dll AttachedHandleEvent view/src/nsView.cpp:193 49 xul.dll nsWindow::DispatchEvent widget/src/windows/nsWindow.cpp:3536 50 xul.dll nsWindow::DispatchWindowEvent widget/src/windows/nsWindow.cpp:3567 51 ntdll.dll ntdll.dll@0x2e591 More reports at : http://crash-stats.mozilla.com/report/list?product=Firefox&version=Firefox%3A4.0b7pre&query_search=signature&query_type=exact&query=ntdll.dll%400x38c19&date=09%2F21%2F2010%2013%3A07%3A34&range_value=4&range_unit=weeks&hang_type=any&process_type=any&plugin_field=&plugin_query_type=&plugin_query=&do_query=1&admin=&signature=ntdll.dll%400x38c19

nvwgf2um.dll (8.17.12.5896) is a NVIDIA dll igd10umd32.dll (8.15.10.2202) is an Intel dll. It seems there are two installed graphic cards. Both are used and an OS conflict happens.

This looks exactly like the crash we thought we'd fixed by blacklisting Optimus from D3D9.

Bug 597320 (blacklisting optimus) was landed on b7pre/20100922 build. These crashes happened before. Some users have "Display Fusion" that is running which is a dual monitor technology.

I don't see this crash signature in crash stats. I close it as WFM.