User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0 Build ID: 20130116073211 Steps to reproduce: - Actual results: - Back (and also Home) Button are drawn with errors - Hovering over them mostly fixes the issue, temporarily Expected results: -

Using Windows 7 on a x64 machine with Intel Q45 graphics.

Could you please go to about:support and click the copy button and attach here?

Attached

You have many extensions, so please try: 1) in safe mode: https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode 2) with a new profile: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles Does it fix your issue?

(In reply to Péter Varga from comment #3) > Created attachment 708656 [details] > about:support copy > > Attached So you're on Win7 x64 + Platform Update (D2D/DW 6.2.9200.16440) + Azure + outdated GFX Driver. => you might want to update your GFX Driver: http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Graphics&ProductLine=Desktop+graphics+drivers&ProductProduct=Intel%C2%AE+Q45+Express+Chipset&ProdId=2998&LineId=1100&FamilyId=39

Péter have you tried with the suggestion of comment 4 and comment 5? Have you solved this?

I'll close this due to the lack of information from the roporter. Please reopen if you have more info.

I think it's a dupe of bug 851764.

Cc'ing dbaron who is aware of this issue.

(In reply to Loic from comment #8) > I think it's a dupe of bug 851764. It seems to be the same, do you think it's better to resolve as duplicate or reopen it?

David posted a good summary about all these bugs here: https://bugzilla.mozilla.org/show_bug.cgi?id=851764#c12 Maybe you can add bug 851764 in the field "Depends on".

Unfortunately, this is not a very useful comment, but I no longer have access to the computer where I could reproduce this. Also worth noting that Chrome had issues on it as well, not in its chrome but in page content (most noticable with other tabs' content appearing in page backgrounds). Is some rendering component shared between Firefox and Chrome?

about:support information by an affected user on sumo, https://support.mozilla.org/en-US/questions/1030160: Adapter Description Intel(R) Q45/Q43 Express Chipset (Microsoft Corporation - WDDM 1.1) Adapter Drivers igdumd32 igd10umd32 Adapter RAM Unknown Device ID 0x2e12 DirectWrite Enabled false (6.3.9600.17111) Driver Date 3-11-2013 Driver Version 8.15.10.2702 GPU #2 Active false GPU Accelerated Windows 0/1 Basic (OMTC) Vendor ID 0x8086 WebGL Renderer Google Inc. -- ANGLE (Intel(R) Q45/Q43 Express Chipset (Microsoft Corporation - WDDM 1.1) Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote true AzureCanvasBackend skia AzureContentBackend cairo AzureFallbackCanvasBackend cairo AzureSkiaAccelerated 0 i also get those artefacts on the back button and the addressbar myself from time to time with this configuration (Mozilla/5.0 (Windows NT 6.1; rv:34.0) Gecko/20100101 Firefox/34.0): Direct2D aktiviert true DirectWrite aktiviert true (6.2.9200.16571) Geräte-ID 0x2a42 GPU #2 aktiv false GPU-beschleunigte Fenster 1/1 Direct3D 11 (OMTC) Karten-Beschreibung Mobile Intel(R) 4 Series Express Chipset Family Karten-RAM Unknown Karten-Treiber igdumdx32 igd10umd32 Subsys-ID 30eb103c Treiber-Datum 2-11-2011 Treiber-Version 8.15.10.2302 Vendor-ID 0x8086 WebGL-Renderer Google Inc. -- ANGLE (Mobile Intel(R) 4 Series Express Chipset Family Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote true AzureCanvasBackend direct2d AzureContentBackend direct2d AzureFallbackCanvasBackend cairo AzureSkiaAccelerated 0

It looks like a serie of devices is affected: + 0x2e12 (Intel(R) Q45/Q43 Express Chipset) + 0x2a42 (Mobile Intel(R) 4 Series Express Chipset Family) philipp, could you try to update the drivers to the latest version released by Intel, please? https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=22163

yes, it's the same with the most recent drivers available as well: Direct2D aktiviert true DirectWrite aktiviert true (6.2.9200.16571) Geräte-ID 0x2a42 GPU #2 aktiv false GPU-beschleunigte Fenster 1/1 Direct3D 11 (OMTC) Karten-Beschreibung Mobile Intel(R) 4 Series Express Chipset Family Karten-RAM Unknown Karten-Treiber igdumdx32 igd10umd32 Subsys-ID 30eb103c Treiber-Datum 10-4-2012 Treiber-Version 8.15.10.2869 Vendor-ID 0x8086 WebGL-Renderer Google Inc. -- ANGLE (Mobile Intel(R) 4 Series Express Chipset Family Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote true AzureCanvasBackend direct2d AzureContentBackend direct2d AzureFallbackCanvasBackend cairo AzureSkiaAccelerated 0

I had the same problem with 0x2a42 (Mobile Intel(R) 4 Series Express Chipset Family) under Windows 8.1 (64-bit). Since updating to Windows 10 (64-bit) and the latest Firefox (currently 40.0.3) the problem is gone. I don't know if Windows 10 or Firefox fixed it.

Peter, is it still an issue for you with the latest Firefox 41?

i think this might have gone away with bug 1180379 which put the adapter in question on a blacklist for certain graphics features.

I can confirm I am no longer having the issue. Tested on the same laptop I originally experienced the issue one, still running Windows 7 SP1; Firefox 41.0