This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Why can't I find a way to turn hardware acceleration off?

  • 2 replies
  • 2 have this problem
  • 2 views
  • Last reply by cor-el

texfinley
texfinley
more options

In advanced settings, general panel, I am trying to turn off hardware acceleration, but the panel is totally unresponsive--greyed out, I guess is one way to express it. My objective is to stop my Silverlight plugin from going unresponsive all the time. I'm trying to follow the steps outlined but find the Firefox pages/panels etc. unresponsive.

In advanced settings, general panel, I am trying to turn off hardware acceleration, but the panel is totally unresponsive--greyed out, I guess is one way to express it. My objective is to stop my Silverlight plugin from going unresponsive all the time. I'm trying to follow the steps outlined but find the Firefox pages/panels etc. unresponsive.

All Replies (2)

user633449
user633449
more options

I'd suggest that you first update your graphics driver, Upgrade your graphics drivers to use hardware acceleration and WebGL.

If that fails to correct your problem (It's always better to have Hardware acceleration turned on than off), type about:config into the address bar, press enter, and then set layers.acceleration.disabled to True

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

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