Prior to RH 7.1 I had trouble getting the lm_sensors package to work.
With RH 7.1 and the 2.4.2-2 kernel, I have had success. Below is how I got it to work (1. long path) and how you can get it to work (2. short path). At the end is the output (3) of running the sensors program.
It appears to swap the CPU and MB temperature readings, at least as compared with the BIOS. For the record, this is a 333MHz K6-III+ with a lasgna fan, a cooling resistor, and a small fan (the latter two from BadFlash).
1. Long path:
Install lm_sensors-2.5.5-3 from the RedHat disk.
Become root and run /usr/sbin/sensors-detect a few times.
Follow its directions. Try preloading i2c-core, i2c-devs, and i2c-viapro
2. Short path:
Install lm_sensors-2.5.5-3 from the RedHat disk.
Put this in /etc/rc.sensors:
#!/bin/sh
# I2C adapter drivers
modprobe i2c-viapro
modprobe i2c-isa
modprobe i2c-viapro
modprobe i2c-isa
# I2C chip drivers
modprobe eeprom
modprobe via686a
Put this at the end of /etc/modules.conf:
# I2C module options
alias char-major-89 i2c-dev
As root, run /sbin/depmod -a.
Run /etc/rc.sensors as root.
Add it to the end of /etc/rc.local if you wish,
if [ -x /etc/rc.sensors ]; then
/etc/rc.sensors
fi
You are now done with the one-time setup.
3. Results
To check the sensors, become a normal user, and run sensors.
% sensors
eeprom-i2c-0-50
Adapter: SMBus vt82c596 adapter at 5000
Algorithm: Non-I2C SMBus adapter
Memory type: SDRAM DIMM SPD
SDRAM Size (MB): 128
via686a-isa-6000
Adapter: ISA adapter
Algorithm: ISA algorithm
CPU core: +1.99 V (min = +1.79 V, max = +2.18 V)
+2.5V: +2.29 V (min = +2.24 V, max = +2.74 V)
I/O: +3.17 V (min = +3.54 V, max = +4.05 V) ALARM
+5V: +4.94 V (min = +6.30 V, max = +2.94 V) ALARM
+12V: +11.51 V (min = +15.28 V, max = +15.28 V) ALARM
CPU Fan: 0 RPM (min = 0 RPM, div = 2)
P/S Fan: 0 RPM (min = 2824 RPM, div = 2)
SYS Temp: +40.0°C (limit = +50°C, hysteresis = +60°C)
CPU Temp: +48.0°C (limit = +50°C, hysteresis = +60°C)
SBr Temp: +27.6°C (limit = +50°C, hysteresis = +60°C)
