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KevinH · 01-27-2025, 09:56 PM

Well I have a I7 based MacOS and it works just fine.

An I7 definitely has AVX and SSE4 registers then this is a different issue completely.

I need more info:

What exact version of Sigil are you using (see the About Sigil dialog)

What exact version of MacOS are you using? (see MacOS System Information)

What graphics card or cards are you using?

The issue is typically that your graphics card or driver software is too old to be supported by the Chrome backend used by Qt's WebEngine

So try the following first:

1. Go to Sigil Preferences and under General Settings on one of the tabs try checking the box: "Disable GPU Acceleration in QtWebEngine/Preview" and saving the exiting Preferences. Then completely exit out of Sigil and launch Sigil again.

Did that help?

2. Try to update your graphics card driver.
If you are running the very latest driver for your graphics card, try updating it direct from Apple first and then directly from or the card manufacturer's website next.

Did that help?

01-27-2025, 09:56 PM	#19
KevinH Sigil Developer Posts: 8,879 Karma: 6120478 Join Date: Nov 2009 Device: many	Well I have a I7 based MacOS and it works just fine. An I7 definitely has AVX and SSE4 registers then this is a different issue completely. I need more info: What exact version of Sigil are you using (see the About Sigil dialog) What exact version of MacOS are you using? (see MacOS System Information) What graphics card or cards are you using? The issue is typically that your graphics card or driver software is too old to be supported by the Chrome backend used by Qt's WebEngine So try the following first: 1. Go to Sigil Preferences and under General Settings on one of the tabs try checking the box: "Disable GPU Acceleration in QtWebEngine/Preview" and saving the exiting Preferences. Then completely exit out of Sigil and launch Sigil again. Did that help? 2. Try to update your graphics card driver. If you are running the very latest driver for your graphics card, try updating it direct from Apple first and then directly from or the card manufacturer's website next. Did that help? Last edited by KevinH; 01-27-2025 at 10:06 PM.