Regarding "smbus-arp" I think it is a bug or a bad explanation form "lm-sensors".
Unless I made a mistake, it is loaded under "i2c-core", i.e. execute "sudo modprobe i2c-core" to get it loaded.

I did so and then the message regarding smbus-arp did not figure anymore and additional data were available.

(If I am wrong pease post)