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flickering lines across menu bar

  • 5 replies
  • 1 has this problem
  • 8 views
  • Last reply by FredMcD

Menfin
Menfin
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Hello, I find that Firefox has flickering lines across the menu bar in full screen as well as in smaller format but only if the menu bar is in the top 1/4 of the screen. This behavior also appears with a printscreen of Firefox pasted in MS Word but only if zoomed in a fair bit, the lines, even in the printscreen situation, flicker, but only in the menu portion of Firefox. This does not happen with other programs and doesn't change if I restart with the add-ons disabled. The printscreen behavior really has me puzzled. I can hide the menu and all is working normally, I do like to have the menu present to work though.

This is happening on a Windows 10 Home edition machine on an external monitor connected via HDMI with Firefox 50.1.0.

Any window that is put in the path of the flickering lines will get them until you go up far enough to maximize the window. Also, a new private window will do the same almost, it will get the lines on the tab as well as the menu.

Hello, I find that Firefox has flickering lines across the menu bar in full screen as well as in smaller format but only if the menu bar is in the top 1/4 of the screen. This behavior also appears with a printscreen of Firefox pasted in MS Word but only if zoomed in a fair bit, the lines, even in the printscreen situation, flicker, but only in the menu portion of Firefox. This does not happen with other programs and doesn't change if I restart with the add-ons disabled. The printscreen behavior really has me puzzled. I can hide the menu and all is working normally, I do like to have the menu present to work though. This is happening on a Windows 10 Home edition machine on an external monitor connected via HDMI with Firefox 50.1.0. Any window that is put in the path of the flickering lines will get them until you go up far enough to maximize the window. Also, a new private window will do the same almost, it will get the lines on the tab as well as the menu.

Chosen solution

Check all the connections to the monitor.

Read this answer in context 👍 1

All Replies (5)

Devin Henrickson
Devin Henrickson
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Hello, can you send me a screenshot of the lines? if it dose not show up then your screen might be damaged.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • Do NOT click the "Refresh Firefox" button on the Safe Mode start window
FredMcD
FredMcD
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Chosen Solution

Check all the connections to the monitor.

Menfin
Menfin Question owner
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It turned out to be a 'bad' HDMI cable that was working fine with my previous laptop but not wanting to work with this new one. Switched cables and all is good.

Thank you all for your help

FredMcD
FredMcD
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Glad to help. Safe Surfing.