Proximity sensor is oversensitive (was "Screen blanks when making call")

[treebeard]

I tried echoing a new value into in_proximity_nearlevel but kept getting "permssion denied" so I'm searching for info on tweaking that.

No luck yet on tweaking proximity parameters but cleaning the fingerprints and gunk off my screen helped a lot!  Mobian apparently used to have a /etc/udev/rules.d/10-proximity.rules so if I find one of those it might provide some insight.

I did find that one can temporarily disable the proximity sensor (and ambient light level detection?) with "sudo rmmod stk3310" and do it permanently by adding that module to /etc/modprobe.d/proximity.conf.