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#1 2020-01-08 17:22:57

dramforever
Member
Registered: 2020-01-08
Posts: 4

Qt-related issue causing large fonts with HiDPI

After upgrading (a few hours prior to this post) and rebooting, some applications have larger fonts than usual. Affected applications include: Konsole, Dolphin, Okular, KNights. I use HiDPI scaling (1.5x) so I think it's related.

Screenshot: https://i.imgur.com/gX3P330.png

After asking on #kde on freenode I was led to this bug report https://bugreports.qt.io/browse/QTBUG-80919. I also found from https://phabricator.kde.org/D26185 that setting the environment variable QT_ENABLE_HIGHDPI_SCALING to 0 will override the corresponding application attribute. I tried and it got all four apps mentioned back to normal. I now have QT_ENABLE_HIGHDPI_SCALING=0 set globally as a workaround. (Do note that I'm not sure this will work for all applications or everyone's setup.)

In short: I hit QTBUG-80919 causing large fonts with HiDPI. Many Qt-based KDE apps affected. Environment QT_ENABLE_HIGHDPI_SCALING=0 workaround worked for me, but untested by anyone else for now.

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#2 2020-01-08 18:26:33

digitalone
Member
Registered: 2011-08-19
Posts: 346

Re: Qt-related issue causing large fonts with HiDPI

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#3 2020-01-16 08:23:00

dramforever
Member
Registered: 2020-01-08
Posts: 4

Re: Qt-related issue causing large fonts with HiDPI

Might be given the same option to work around the issue, but I didn't see the same symptoms so initially I thought these are unrelated. Blurry != large.

I'll ask in the other thread.

Last edited by dramforever (2020-01-16 08:23:17)

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