(CTRL-ALT-T to get a terminal in chrome, then type "shell") copy-paste the rom download script from johnlewis.ie, backup your firmware from the menu, then flash the firmware and boot your favorite LiveUSB of choice. I use KaOS[0] as my preferred LiveCD while I install arch (with OpenRC) or Gentoo.
I have a C720P. There are two versions. should you have the older version (cyapa touchpad module), any modern kernel will work. If you have a Elan touchpad (i.e. touchpad doesn't work on boot), you'll have to patch a kernel driver. I could create a full overlay for my gentoo modifications, but I doubt anyone would want to use it. :)
Which linux do you use? I really like how samsung series 9 looks like, and I suggested my friend to buy it three years ago. He also like the laptop, but he told me that he has some performance problems in ubuntu.
There are some projects that got much more donations and users that got more tips. You can check the list https://tip4commit.com/users It was a mistake to bother you with this tiny tips. Sorry
Also, if you claim your tips by specifying your bitcoin address, tips will never be refunded again.
You can use OsmAnd to record a gps track and send it to OpenStreetMap. It will be available in most editors, including iD. Althought, you can use any gps tracker and upload a track here http://www.openstreetmap.org/trace/create
