[rkward] [Bug 503487] Help pages and rkward welcome page don't render correctly

[Thomas Friedrichsmeier]

https://bugs.kde.org/show_bug.cgi?id=503487

--- Comment #4 from Thomas Friedrichsmeier <thomas.friedrichsmeier at kdemail.net> ---
So, if I understand correctly, you have:

Desktop PC, using system Qt, KF5 based version of RKWard: BROKEN
Desktop PC, using AppImage: works
Laptop, using system Qt: works
Laptop, using AppImage: works

Right? To me this seems to point to a problem with the Manjaro QWebEngine
packages. As you diagnosed further, this seems to be related to hardware
acceleration, specifically. To confirm this, you could try running RKWard with

  QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu" rkward

Via the same environment variable, you can also set some logging options (e.g.
"--enable-logging --log-level=0 --v=1"; see
https://doc.qt.io/qt-6/qtwebengine-debugging.html) which might help pinpointing
further differences esp. between the AppImage build and the system Qt. My first
guess is that QWebEngine hardware acceleration is broken and blacklisted on
your desktop GPU, but the Manjaro Qt package may fail to respect the blacklist.

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