update
after being able to successfully destroying the shipped OS I started a more thorough investigation. since already on it:
- encrypted the ROOT partition (left BOOT uncrypted) (through sd booted manjaro with arm installer onboard). here I did all steps separately as root (export CRYPT="y" and bash manjaro-arm-installer). all this mentioned sudo and su sudo was crap. 1. su, 2. export crypt 3. install -> works fine
- backup strategy with rsnc (ssh) failed (due to modified file attributes) so I applied clonezilla and built eMMC images (worked quite fine) (rsync now for /home data only). Restore tested ok, including the encrypted ROOT
- cisco VPN via sudo vpnc and networkmanager-vpnc -> ok. both available via pacman
- firewall ufw via pacman worked out of the box
took me two days to crash and rebuild (partime) and I learned a lot about the ARM based "PC".
And yes: I do enjoy the simplicity
Drawbacks:
- the trackpad is crap. I dont mind because I alsways work with Mouse. hopefully a software weakness that will be improoved one day (not a showstopper, but nothing for the dayly work).
- I am not able to warmstart the system ("reboot"). when rebooting the system stops with dark screen. If I apply power cycle/cold start everything works fine.
Next steps will be to try it as dayly driver for mobile situations (netbook applications)
My work for a living (SW-Architect) will remain on my thinkpad extreme G2, but I am looking forward to enjoying the pine in other allday situations.