Ubuntu 18.10 has this feature as part of GNOME 3.30.
There are some complaints though: https://lwn.net/Articles/764841/ https://bugs.debian.org/908930
On the other hand, Simon's comment on the Debian bug indicates that feature won't work if the system uses a swap file which Ubuntu 18.04 LTS and newer does by default.
Ubuntu 18.10 has this feature as part of GNOME 3.30.
There are some complaints though: /lwn.net/ Articles/ 764841/ /bugs.debian. org/908930
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On the other hand, Simon's comment on the Debian bug indicates that feature won't work if the system uses a swap file which Ubuntu 18.04 LTS and newer does by default.