Tip: Touch screen with Firefox (Buster)

[Hallvor]

In contrast to, say, Konqueror, Firefox did not work well with the touch screen of my ThinkPad T440s. Scrolling a web page with the finger did not work, and zooming with two fingers did not work either.

Disclaimer: This may or may not work on your computer.

With a simple edit, I was able to use the touch screen the same way as on my mobile phone.

First edit the following file (as root) with your favorite text editor, for instance:

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# nano /etc/security/pam_env.conf

Then add the following line at the bottom of the page:

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MOZ_USE_XINPUT2 DEFAULT=1

Save and exit (Ctrl+X and then Y with nano).

Reboot.