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Screen elements are too small to click or read on my 4K laptop screen. How do I make it obey Gnome scaling, which is set to 200%?

I'm on Fedora 29, but this should be the same issue on Ubuntu 18.06

This issue also affects macbook retina display screens.

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51

An answer that does not require changing common files that may be changed by future installs:

Zoom currently creates a file named zoomus.conf under your .config folder in the user's home folder.

One of the settings is ScaleFactor, set to 1 by default. Set this to 2, and next time you start the application it will have appropriate-sized visuals.

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  • 1
    Very helpful, thanks! – Peoplee Jan 24 at 14:04
  • Thank you, you saved my time – geeksamu Apr 25 at 3:08
24

The scale is set in an environment variable QT_DEVICE_PIXEL_RATIO.

You can add it to the desktop file in /usr/share/applications/Zoom.desktop by changing the Exec line to Exec=env QT_DEVICE_PIXEL_RATIO=2 /usr/bin/zoom %U

Or add export QT_DEVICE_PIXEL_RATIO=2 to you profile script

Source: zoom.us support

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    Since Qt 5.6 the variable name has changed to QT_SCALE_FACTOR, therefore: export QT_SCALE_FACTOR=2 – dav.garcia Oct 22 '19 at 8:34
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    Funny enough, this makes perfectly good working applications like Okular look terrible. Thus, I only added it to the .desktop file. – Raffi Khatchadourian Oct 30 '19 at 14:07
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In Fedora 31, installed from Flatpak, I edit ~/.local/share/applications/us.zoom.Zoom.desktop as Ray Foss suggested above.

Before:

Exec=/usr/bin/flatpak run --branch=stable --arch=x86_64 --command=zoom --file-forwarding us.zoom.Zoom @@u %U @@

After:

Exec=env QT_SCALE_FACTOR=2 /usr/bin/flatpak run --branch=stable --arch=x86_64 --command=zoom --file-forwarding us.zoom.Zoom @@u %U @@
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