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Text and images appear corrupted, apparently cleartype or azure problem.


I get ugly and sometimes unreadable text. Images have the same kind or error, the anomaly seems like loss of vertical detail in web pages, but it's clearly not just that. http://img10.imageshack.us/img10/2066/mozillafirefoxbuild2013.jpg http://img692.imageshack.us/img692/6729/picasa3912013125242bmp.jpg To me, the issue seems to be with ClearType or more accurately, how Firefox deals with it, as no other program has this kind of problems. These are not related to my persona. I have no issues with text in menus or the program windows, but they do render a bit darker than in other programs.

Chosen solution

Try to disable hardware acceleration in Firefox.

Read this answer in context 11

Additional System Details

Installed Plug-ins

  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • iTunes Detector Plug-in
  • VLC media player Web Plugin 2.0.2
  • Nokia Suite Enabler Plugin
  • Next Generation Java Plug-in 10.9.2 for Mozilla browsers
  • Shockwave Flash 11.4 r402
  • Google Update
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Picasa plugin
  • Intel web components for Intel® Identity Protection Technology
  • Intel web components updater - Installs and updates the Intel web components
  • GEPlugin
  • 5.1.10411.0
  • Musicnotes Viewer plugin 1.19.0 For more information visit www.musicnotes.com
  • Winamp Application Detector
  • Adobe PDF Plug-In For Firefox and Netscape 10.0.1
  • getplusplusadobe16290
  • ScorchPlugin
  • Provides additional functionality on Facebook. See our web site for details.


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

"name": "Firefox",
"version": "18.0",
"userAgent": "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0",
"supportURL": "http://support.mozilla.org/1/firefox/18.0/WINNT/fi/"
"font.name.serif.x-western": "Tahoma",
"general.autoScroll": false,
"gfx.direct3d.prefer_10_1": true,
"gfx.font_rendering.directwrite.enabled": true,
"graphics": {
"numTotalWindows": 1,
"numAcceleratedWindows": 1,
"windowLayerManagerType": "Direct3D 10",
"adapterDescription": "ATI Radeon HD 4800 Series",
"adapterVendorID": "0x1002",
"adapterDeviceID": "0x9460",
"adapterRAM": "1024",
"adapterDrivers": "aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64",
"driverVersion": "8.970.100.3000",
"driverDate": "7-3-2012",
"adapterDescription2": "",
"adapterVendorID2": "",
"adapterDeviceID2": "",
"adapterRAM2": "",
"adapterDrivers2": "",
"driverVersion2": "",
"driverDate2": "",
"isGPU2Active": false,
"direct2DEnabled": true,
"directWriteEnabled": true,
"directWriteVersion": "6.2.9200.16440",
"clearTypeParameters": "Gamma: 1800 Pixel Structure: RGB ClearType Level: 50 Enhanced Contrast: 50 ",
"webglRenderer": "Google Inc. -- ANGLE (ATI Radeon HD 4800 Series)",
"info": {
"AzureCanvasBackend": "direct2d",
"AzureFallbackCanvasBackend": "cairo",
"AzureContentBackend": "direct2d"
"javaScript": {
"incrementalGCEnabled": true

Helpful Reply

Oh yeah, when the text is refreshed via selection and deselec, it clears up. Also, this happens in sections, in rows and paragraps even I just select a part of the text. Also scrolling a form with text in it makes empty row to be filled with the previous row's text sometimes.

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10749 solutions 96724 answers

Chosen Solution

Try to disable hardware acceleration in Firefox.

Question owner

Well, they went away I think. Haven't tested so much yet. I'll just use Chrome until the speed is better. It's about twice as fast as Firefox, which only does a bit smoother text... I don't read so much on this machine anyways.