I've been tuned my Toughpad for a week now and it seems to work nicely with Ubuntu 15.04. I decided to expand a bit of those scrollbars, font sizes and Firefox buttons - just to make it more handy to use with touch.
While this model I have is based on Intel® Celeron™ N2807, it's a bit slow going but runs on battery for few hours easily. I will try to check out exact figures later on.
To summarize what I've got in this combo so far;
- FZ-M1 tablet with Intel® Celeron™ N2807
- 2 GB RAM and 128 GB of SSD
- Ubuntu 15.04 (AMD64)
- Integrated 3G/LTE modem, Sierra Wireless EM7305 [works]
- Multi touch screen [works]
- Audio, also 3.5mm HF audio w/ microphone [works]
- Screen brightness control [works]
- iKey ruggerd keyboard
- Integrated LAN port (option for FZ-M1) [works]
- Bluetooth [works]