On 28 Sep 2022, at 09:15, Manolo wrote:
> 
> Ian: would you, please, try with this patch (after a git pull) ?
> patch -p1 < switch2GL1attempt.patch.txt
> 

Different - but not the whole story...

The GL panel now shows the gradient square from start, but the button is invisible.
The button is “there” as I can click it, but it does not show on the screen...

It’s possible this Mac is just Too Old, I suppose, so maybe not worth pursuing?
Though I do not know how many other “old” Macs are still out there, could be a fair few I suppose...

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