Ubuntu 16.04 ships with Qt 5.5, which doesn't have the Qt's new HiDPI
work. If you want to try out Qt 5.6, there's a PPA that can be installed
(and uninstalled) with instructions from
https://wiki.ubuntu.com/Touch/QtTesting
It will only land in Ubuntu 16.10.
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Hi, I found there is a environment variable from
http://doc.qt.io/qt-5/highdpi.html.
If we set QT_DEVICE_PIXEL_RATIO=auto in the system with HiDPI, it does work but
doesn't work very well.
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Comment #8 is tested by Ubuntu 16.04.
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https://bugs.launchpad.net/bugs/1480194
Title:
QML UIs don’t respect the scale factor for HiDPI display
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