Quote:
Originally Posted by JSWolf
It's probably the graphics drivers used for the old computers. You culd try setting the following environment variable on the old computers and then try the latest Sigil.
Code:
QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"
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No need. Setting that precise variable before launch is EXACTLY what Sigil's "Disable GPU Acceleration in QtWebEngine/Preview" preference setting does.
https://github.com/Sigil-Ebook/Sigil.../main.cpp#L479
In this case, it's entirely possible that the embedded blocklist in Sigil 2.4's Qt6.8.3 has blocked the particular driver version(s) on the two oldest machines.
If setting QSG_RHI_BACKEND to opengl doesn't work, one could try setting QTWEBENGINE_CHROMIUM_FLAGS to --disable-gpu-blocklist, but there's a reason the block list exists.