To disable it in about:config
browser.search.serpEventTelemetry.enabled = false
browser.search.serpEventTelemetryCategorization.enabled = false
To disable it in about:config
browser.search.serpEventTelemetry.enabled = false
browser.search.serpEventTelemetryCategorization.enabled = false
Ubuntu telemetry is fairly minimal, as of last time I used it a few years ago. Not remotely comparable to what firefox does. They just want to know what hardware you have, there’s no user behaviour tracking, and it’s fully opt-in (you have to deliberately turn it on when installing). KDE and Gnome have a little something like that as well now, I think. Almost everything else does not.
Debian has a list (last updated 2023-10) of software among the 97000 packages they distribute which have been found to violate user privacy by “phoning home” for telemetry or other purposes:
I mean, that depends on how you define user behaviour. It tracks which packages are frequently installed, for example, or how often people install Ubuntu in the first place. All of which I think is pretty legit, in my opinion, since that only involves aggregate user statistics that help prioritise work and detect common problems - but that’s essentially what Firefox is doing too.
Debian is a great example of relatively commonly used free software that doesn’t really collect data btw.