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Add GDK scaling

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techge 2022-02-17 15:20:28 +01:00
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docs/customization/dpi-scaling.md
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@ -102,6 +102,37 @@ gsettings reset org.gnome.desktop.interface text-scaling-factor
For more information on setting system-wide dconf values see [this page](https://help.gnome.org/admin/system-admin-guide/stable/dconf-custom-defaults.html.en).
# Troubleshooting
## Firefox and other GTK3 applications
Even when setting the correct dpi values, some applications might have very
small icons or similar elements. This usually happens in Firefox for example.
To mitigate this issue it is possible to set the `GDK_SCALE` and `GDK_DPI_SCALE`
variables as described
[here](https://wiki.archlinux.org/title/HiDPI#GDK_3_(GTK_3). To test these
values first, open a terminal and type:
~~~
export GDK_SCALE=2
export GDK_DPI_SCALE=0.5
firefox
~~~
You can try change the values for `GDK_SCALE` and `GDK_DPI_SCALE` to your
liking, but `GDK_SCALE` needs to be an integer value.
Once you confirmed that this is working, you can make these settings permanent
by creating a file `/etc/profile.d/dpi_GDK.sh` (ideally in the template VM) with
the following content and your own values:
~~~
#!/bin/sh
export GDK_SCALE=2
export GDK_DPI_SCALE=0.5
~~~
Resources
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