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

Wo archive tread sia. Meɖekuku bia biabia yeye ne ehia kpeɖeŋu.

When I scroll in Firefox, a line of distortion shows up horizontally across the page. It happens in no other applications.

  • 3 ŋuɖoɖowo
  • 10 masɔmasɔ sia le wosi
  • 1 view
  • Nuɖoɖo mlɔetɔ cor-el

earthman7
earthman7
more options

When I scroll in Firefox, a feint but noticeable line of distortion (directly in line with where my cursor is grabbing and dragging the scroll bar) shows up horizontally across the page in many Firefox windows. It happens in no other applications. Mac OS X 10.7, Lion on a Mac Mini Server, 2011. Any suggestions or files I ought to remove to make this go away?

When I scroll in Firefox, a feint but noticeable line of distortion (directly in line with where my cursor is grabbing and dragging the scroll bar) shows up horizontally across the page in many Firefox windows. It happens in no other applications. Mac OS X 10.7, Lion on a Mac Mini Server, 2011. Any suggestions or files I ought to remove to make this go away?

earthman7 trɔe

Ŋuɖoɖo si wotia

You're welcome

Xle ŋuɖoɖo sia le goya me 👍 0

All Replies (3)

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

Try to disable hardware acceleration.

  • Firefox > Preferences > Advanced > General > Browsing: "Use hardware acceleration when available"

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

earthman7
earthman7 Biabia la
more options

Try to disable hardware acceleration. Firefox > Preferences > Advanced > General > Browsing: "Use hardware acceleration when available"

The simple instructions above did it!!! I didn't understand the other instructions you gave about Safe Mode, but didn't need that anyway.

Thanks for your help!

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

Ɖɔɖɔɖo si wotia

You're welcome