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I have large pixel type squares on my screen running Mac OS High Sierra - Is there a fix?

Thunderbird Troubleshooting
ametronav replied 8 years ago
ametronav
ametronav

When I launch Thunderbird using my Mac running OS 10.13.1 (High Sierra), my screen populates with groups of square pixels - hundreds of them. If I reboot my computer and don't launch Thunderbird the problem goes away. My computer also freezes from time to time when running Thunderbird.

When I launch Thunderbird using my Mac running OS 10.13.1 (High Sierra), my screen populates with groups of square pixels - hundreds of them. If I reboot my computer and don't launch Thunderbird the problem goes away. My computer also freezes from time to time when running Thunderbird.

All Replies (2)

Zenos
Zenos

Have you tried with hardware acceleration on and off?

On Windows and Linux, it's under Tools|Options|Advanced|General.

The route through the menus may be different in your case.

http://kb.mozillazine.org/Menu_differences_in_Windows,_Linux,_and Mac

ametronav
ametronav Question owner

I tried turning on hardware acceleration but it doesn't solve the problem. Any other suggestions?? I have an iMac vintage 2011 operating OS High Sierra.