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Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

I get vertical lines below the text when I type

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After upgrading to Firefox 4 in Windows 7 I get vertical line that appear below what I type. This is not happening with other browsers. Anybody else experiencing this or have a solution?

After upgrading to Firefox 4 in Windows 7 I get vertical line that appear below what I type. This is not happening with other browsers. Anybody else experiencing this or have a solution?

All Replies (4)

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Update the video display driver to the latest version.

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

  • Don't make any changes on the Safe mode start window.

In Firefox 4 Safe mode disables extensions and disables hardware acceleration.

  • Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
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It was the hardware acceleration. -Thank You

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This problem should not be because of hardware acceleration and I think I found the answer. I was getting odd graphical iisues in Firefox 4. Not just with the strange vertical lines. By disabling hardware accelration it did indeed fix the issue with the lines underneath where I typed in boxes. But the other problems were still an issue. I tried to fix the other issue by disabling all my addons and it did not make any difference. BUT when I restarted Firefox 4 in safe mode it did. Which led me to believe something else was at play here.

I remembered the UserChrome.css I had in my Firefox profile folder. I renamed that file and restarted Firefox. All my graphical bugs vanished. Out of curiousity I also enabled hardware acceleration. Voila! No more vertical lines either!

Now I did a reinstall of Firefox 4 just to check if it created a UserChrome.cc file but it did not. So I can only assume that there is something in that old file that others have when upgrading from Firefox 3 that causes this issue and other graphic probs.

I advise anyone who noticed this issue to try renaming UserChrome.css if it exists and see if it resolves the issue or not.

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Can you post the content of that file userChrome.css using code tags (<pre> </pre>)?