User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20120319 Firefox/13.0a2 Build ID: 20120319042013 Steps to reproduce: From https://bugzilla.mozilla.org/show_bug.cgi?id=668344#c38 Crash occurs only in FF13 (afaik). STR: 1) Open http://people.mozilla.org/~jdaggett/tests/subpixelexplorer.html 2) Disable hardware acceleration 3) Back to tab and click on button 'redraw' CR: https://crash-stats.mozilla.com/report/index/bp-43f0f215-321a-4fb6-9755-034bf2120320 Signature mozilla::gfx::DrawTargetD2D::FillGlyphs(mozilla::gfx::ScaledFont*, mozilla::gfx::GlyphBuffer const&, mozilla::gfx::Pattern const&, mozilla::gfx::DrawOptions const&) Crashing Thread Frame Module Signature [Expand] Source 0 xul.dll mozilla::gfx::DrawTargetD2D::FillGlyphs gfx/2d/DrawTargetD2D.cpp:885 1 xul.dll nsCanvasBidiProcessorAzure::DrawText content/canvas/src/nsCanvasRenderingContext2DAzure.cpp:3089 2 xul.dll nsBidiPresUtils::ProcessText layout/base/nsBidiPresUtils.cpp:1824 3 xul.dll nsCanvasRenderingContext2DAzure::DrawOrMeasureText content/canvas/src/nsCanvasRenderingContext2DAzure.cpp:3335

(In reply to Loic from comment #0) > User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20120319 > Firefox/13.0a2 > https://crash-stats.mozilla.com/report/index/bp-43f0f215-321a-4fb6-9755- > 034bf2120320 The crash ID is related to 12.0a2/20120313042010. Does it happen on 13.0a2?

(In reply to Scoobidiver from comment #1) > The crash ID is related to 12.0a2/20120313042010. Does it happen on 13.0a2? Aurora was FF12 when I reproduced the crash then updated to FF13 after the restart, that's why I got confused. But the affected version is FF12 (now in beta). New CR: https://crash-stats.mozilla.com/report/index/bp-bfd47d12-ac9f-41ff-bc96-498632120320

I can reproduce in 12.0b1, I can't in 11.0, 13.0a2, 14.0a1. Disabling HW acceleration is not a common task (only one crash in 12.0b1).

(In reply to Scoobidiver from comment #3) > I can reproduce in 12.0b1, I can't in 11.0, 13.0a2, 14.0a1. > > Disabling HW acceleration is not a common task (only one crash in 12.0b1). Does this reproduce if hardware acceleration is disabled from the beginning? We do blocklist drivers from using D2D, so this could be a bigger problem when pushed to our general audience.

(In reply to Alex Keybl [:akeybl] from comment #4) > Does this reproduce if hardware acceleration is disabled from the beginning? No. In addition, it's recommended to restart Firefox after modifying this option although it isn't written in the UI (see bug 593027).

No, and the page http://people.mozilla.org/~jdaggett/tests/subpixelexplorer.html needs to be open before disabling HWA.

Oops, something goes wrong with the flags. Can you remove the modifications please?

(In reply to Scoobidiver from comment #5) > No. In addition, it's recommended to restart Firefox after modifying this > option although it isn't written in the UI (see bug 593027). Thanks for the explanation. Given that, no need to track for 12.

Another testcase about this crash: 1. Be sure HWA is enabled 2. Open this JS demo http://js1k.com/2012-love/demo/1243 3. Disable HWA Result: FF12 crashes immediately. CR: https://crash-stats.mozilla.com/report/index/bp-0aeb028f-98ed-48aa-88f1-799472120408

I'd tried this issues on MAC OS, Ubuntu and Windows platform and I can't find it any more. I will close this bug. Reopen if anyone still can reproduce it. Thanks.