Just as in ticket 1346696, I have a sensor on my system whose driver does not have min/max values, and this sensor does not show up as an option to monitor in webmin. Consider this a feature request.
My `sensors` output:
k8temp-pci-00c3
Adapter: PCI adapter
Core Temp: +33.0°C
adt7476-i2c-1-2e
Adapter: SMBus nForce2 adapter at 3400
Vcore: +1.10 V (min = +1.08 V, max = +2.50 V)
+3.3V: +3.28 V (min = +2.96 V, max = +3.61 V)
+5V: +5.12 V (min = +4.48 V, max = +5.50 V)
+12V: +12.40 V (min = +10.77 V, max = +13.17 V)
CPU Fan: 1421 RPM (min = 1200 RPM)
System Fan: 965 RPM (min = 800 RPM)
M/B Temp: +28.0°C (low = +10.0°C, high = +40.0°C)
(crit = +50.0°C, hyst = +46.0°C)
That output looks OK to me.
Which of the sensor variables is not showing up in Webmin as option you can select?