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Bizarre rendering error on Firefox

  • 1 wótegrono
  • 1 ma toś ten problem
  • 1 naglěd
  • Slědne wótegrono wót cor-el

thomaswp
thomaswp
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For the past few months, I've noticed that at certain times, Firefox will have the most bizarre rendering errors. It's as if someone applied a strange amalgam of Photoshop filters to various portions of my screen, including tinting and affine transforms. Screenshots are attached (with personal info whited-out, not as a result of the rendering problem). The problems occur with varying severity at different times.

The issue occurs without any apparent cause, affects some pages sporadically, without being consistently triggered by any one website, and usually goes away when I restart Firefox. When it starts happening on one page, it will continue to happen on occasion on other pages until I restart Firefox.

I can only assume this is an issue with hardware-accelerated rendering and some incompatibility with my graphics card. I don't experience any issue with the card on other programs, though I can't rule out a problem with the card itself. I have an AMD Radeon HD 7800.

For the past few months, I've noticed that at certain times, Firefox will have the most bizarre rendering errors. It's as if someone applied a strange amalgam of Photoshop filters to various portions of my screen, including tinting and affine transforms. Screenshots are attached (with personal info whited-out, not as a result of the rendering problem). The problems occur with varying severity at different times. The issue occurs without any apparent cause, affects some pages sporadically, without being consistently triggered by any one website, and usually goes away when I restart Firefox. When it starts happening on one page, it will continue to happen on occasion on other pages until I restart Firefox. I can only assume this is an issue with hardware-accelerated rendering and some incompatibility with my graphics card. I don't experience any issue with the card on other programs, though I can't rule out a problem with the card itself. I have an AMD Radeon HD 7800.
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Wšykne wótegrona (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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You can try to disable OMTC and leave hardware acceleration in Firefox enabled.

  • about:config page: layers.offmainthreadcomposition.enabled = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window