Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

ابحث في الدعم

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.

blurry letters on websites when scrolling in Firefox 19 (with either smooth scrolling enabled or disabled)

  • 3 ردود
  • 16 have this problem
  • 3 views
  • آخر ردّ كتبه ideato

Santuzzo
Santuzzo
more options

Hello,

Just recently I updated to Firefox 19, and since I had some problems when scrolling on websites: some of the lines/letters get blurred. I did some online research and found a tip of deactivating smooth scrolling, so I did that, re-started Firefox, but the issue was still not solved. I did not have this problem until the recent upgrade. Is this a known issue? Is there a solution to this? If not, how can I go back to the previous version of Firefox, I can only find download links to the latest version....

Thanks, Lars

Hello, Just recently I updated to Firefox 19, and since I had some problems when scrolling on websites: some of the lines/letters get blurred. I did some online research and found a tip of deactivating smooth scrolling, so I did that, re-started Firefox, but the issue was still not solved. I did not have this problem until the recent upgrade. Is this a known issue? Is there a solution to this? If not, how can I go back to the previous version of Firefox, I can only find download links to the latest version.... Thanks, Lars

الحل المُختار

Hello Santuzzo, try to Turn off hardware acceleration and check it again.


thank you

Read this answer in context 👍 7

All Replies (3)

ideato
ideato
more options

الحل المُختار

Hello Santuzzo, try to Turn off hardware acceleration and check it again.


thank you

Santuzzo
Santuzzo صاحب السؤال
more options

Hi ideato,

Thank you very much for your quick reply. Before you replied I went to the AMD/ADI website to download the latest driver for my graphics card to give that a try, then I re-started Firefox, but that did not solve the problem. Now I tried your suggestion, and so far it seems to be the solution. I may have to do some more testing, as the blurred letters before did not always occur, just some times. I will post back after more testing, but like I said, thus far it seems to have solved the issue.

But isn't this strange that I never had this problem until I upgraded to the latest version of Firefox? Also I thought updating the graphics card drivers would solve the issue, but they did not. Does this somehow mean I have an outdated graphics card?

EDIT: could it be that in the previous version of Firefox the hardware acceleration was disabled by default and in the latest version it's enabled by default?

Thanks, Lars

Modified by Santuzzo

ideato
ideato
more options

Hi Lars, you said : EDIT: could it be that in the previous version of Firefox the hardware acceleration was disabled by default and in the latest version it's enabled by default?

hardware acceleration is enable always in the versions, probably something with Bug 825205 - WebGL index validation fails when a large attribute buffer is bound, that fixed in new version see: https://www.mozilla.org/en-US/firefox/19.0/releasenotes/

Does this somehow mean I have an outdated graphics card?

you can check it, but if working without problem with hardware acceleration was disabled, for me, leave it as it is. !


thank again