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

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

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

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Legendary Contributor

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

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


thank you

3 REPLIES
Legendary Contributor

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

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


thank you

New Contributor

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

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 Does this somehow mean I have an outdated graphics card?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

Legendary Contributor

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

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