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Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

large black boxes or lines are appearing and preventing me from entering text in varous programs’ for ‘Firefox’

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large black boxes or lines are appearing and preventing me from entering text in various programs’ for ‘Firefox’

These are very large black "boxes" that also cause gmail to flick in and out from a large to a small display

Réiteach roghnaithe

You can try to disable hardware acceleration in Firefox.

Close and restart Firefox after modifying the setting for changes to take effect.

You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.

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Apps affected include Firefox, Freelancer, Gmailand, Wordpress... Pretty much every program i use.

I can't take a screen shot because the L shaped "box" disappears when i click on the screenshot app.

It is happening while i type this!

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It's not happening in Word/Excel etc just Apps running in firefox

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Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting Any Computer In Safe Mode; Free Online Encyclopedia

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Réiteach Roghnaithe

You can try to disable hardware acceleration in Firefox.

Close and restart Firefox after modifying the setting for changes to take effect.

You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.