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Calibre ebook viewer not opening
#1  Inman 07-04-2020, 05:22 AM
I recently updated to Calibre 4.19 on my Windows 8 laptop, after using an old version for over a year. Now the problem is whenever I try to open the ebook viewer inside Calibre, it appears for a second and then closes automatically. Not just while opening books, even if I simply launch the ebook viewer directly from start menu, the same thing happens.

I tried running Calibre in debug mode but it seems to have entries about Calibre management app only, not the viewer. I updated to 4.20 as well just now but same issue. Any idea how to fix this?
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#2  kovidgoyal 07-04-2020, 11:49 AM
It will be an incompatibility with your graphics card/drivers. try updating your drivers and if that does not work, turn off hardware rendering as described here: https://doc.qt.io/qt-5/qtwebengine-debugging.html
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#3  Inman 07-05-2020, 04:52 AM
Quote kovidgoyal
It will be an incompatibility with your graphics card/drivers. try updating your drivers and if that does not work, turn off hardware rendering as described here: https://doc.qt.io/qt-5/qtwebengine-debugging.html
Thanks. That worked.
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