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Add a FAQ entry about viewer not working

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Kovid Goyal 2021-01-16 07:42:05 +05:30
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manual/faq.rst
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@ -439,7 +439,7 @@ Why does calibre not support collections on the Kindle or shelves on the Nook?
Neither the Kindle nor the Nook provide any way to manipulate collections over
a USB connection. If you really care about using collections, I would urge you
to sell your Kindle/Nook and get a Kobo. Only Kobo seems to understand that
life is too short to be entering collections one by one on an e-ink screen :)
life is too short to be entering collections one by one on an e-ink screen 😇
Note that in the case of the Kindle, there is a way to manipulate collections
via USB, but it requires that the Kindle be rebooted *every time* it is
@ -847,6 +847,18 @@ see which one is causing the issue. Basically, stop a program, run calibre,
check for crashes. If they still happen, stop another program and repeat.
The calibre E-book viewer and Edit book tools do not work on Windows?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
These two programs use hardware acceleration as they embed a version of the
Chrome browser to render HTML. If they do not work it will be because of
incompatibility with your system's GPU (graphics) drivers. Try updating these
first, and reboot. If that does not fix it, you can set the
``QTWEBENGINE_CHROMIUM_FLAGS`` environment variable to the value
``--disable-gpu`` to turn off hardware acceleration. See
`this page <https://doc.qt.io/qt-5/qtwebengine-debugging.html>`_ for details.
Using the viewer or doing any conversions results in a permission denied error on Windows
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~