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How to get rid of vertical grey line seen only on Firefox

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I have a mysterious grey vertical line seen across one website, only on Firefox. Does anyone know what causes this? Latest Firefox installed, shows up on both regular and developer version.

I have a mysterious grey vertical line seen across one website, only on Firefox. Does anyone know what causes this? Latest Firefox installed, shows up on both regular and developer version.

Chosen solution

I see the same effect on that page when the width is over about 965px if I check this in the Inspector.

This could happen if content is placed on canvas and there is a one pixel gap between various parts. I've recently seen another thread about a faint lines appearing.

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 29.0 r0

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:60.0) Gecko/20100101 Firefox/60.0

More Information

Question owner

Image wouldn't initially post.

Image wouldn't initially post.
FredMcD
  • Top 10 Contributor
4220 solutions 58909 answers

Type in the address bar about:config (press Enter) (promise to be careful if asked) Type in the search bar and look for the preference : media.wmf.dxva.d3d11.enabled And set its value to false. After, restart Firefox.

Type in the address bar '''about:config''' (press Enter) (promise to be careful if asked) Type in the search bar and look for the preference : '''media.wmf.dxva.d3d11.enabled ''' And set its value to false. After, restart Firefox.

Question owner

Thanks for your reply. Unfortunately it's not just on my computer, it shows across multiple computers only on firefox, so I don't feel like this solution will fix it.

Thanks for your reply. Unfortunately it's not just on my computer, it shows across multiple computers only on firefox, so I don't feel like this solution will fix it.
cor-el
  • Top 10 Contributor
  • Moderator
17409 solutions 157269 answers

Chosen Solution

I see the same effect on that page when the width is over about 965px if I check this in the Inspector.

This could happen if content is placed on canvas and there is a one pixel gap between various parts. I've recently seen another thread about a faint lines appearing.

I see the same effect on that page when the width is over about 965px if I check this in the Inspector. This could happen if content is placed on canvas and there is a one pixel gap between various parts. I've recently seen another thread about a faint lines appearing. <!-- wLrJXYw1ibhZXYyF2YtEGbsFWeod3LrJXYw1ibhZXYyF2YvUXYu02bj5iclt2byJ2ayFGcuFmdhJXYj9yL6MHc0RHa== -->

Modified by cor-el

Question owner

Thank you for your reply! Enough information to find the culprit :) Thanks!

Thank you for your reply! Enough information to find the culprit :) Thanks!