Touchpad Synaptics TM2976-002 on /dev/input/event8
Move one finger around the touchpad to detect the actual edges
Kernel says:	x [0..4008], y [0..2266]
Touchpad sends:	x [16..4008], y [0..2259] -^C\--

Touchpad size as listed by the kernel: 91x51mm
User-specified touchpad size: 96x56mm
Calculated ranges: 3992/2259

Suggested udev rule:
# <Laptop model description goes here>
evdev:name:Synaptics TM2976-002:dmi:bvnInsyde:bvrF.03:bd10/14/2014:svnHewlett-Packard:pnHPStreamNotebookPC11:pvrType1-ProductConfigId:rvnHewlett-Packard:rn8023:rvr54.0E:cvnHewlett-Packard:ct10:cvrChassisVersion:*
 EVDEV_ABS_00=16:4008:42
 EVDEV_ABS_01=0:2259:40
 EVDEV_ABS_35=16:4008:42
 EVDEV_ABS_36=0:2259:40