+1 - I tried to enable zram but the default kernel shipped with Debian has ALL swap features disables. No possibility to use zram or any file/device as swap
I was able to use swap with a manually compiled kernel but as the standard RAM is not sufficient to build I needed to cross compile following the descriptions on the developer page. With the updated and swap enabled kernel installed and 1G swap added I was able to compile the kernel on the Rock Pi S itself… but this is a pain for long term maintenance. I would rather like to get a kernel with required featured upstream…
Also missing in default kernel shipment: iptables support, network bridging.
root@rockpis:~# iptables -F
modprobe: FATAL: Module ip_tables not found in directory /lib/modules/4.4.143-23-rockchip-g394d86b2b38b
iptables v1.6.0: can’t initialize iptables table `filter’: Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.