The K7S6A mainboard use the ITE IT8705F chipset. This chipset is supported by the it87 driver. The IT8705F chipset supports Hardware Monitor and Fan Speed Controller.
For more informations, see http://www.ite.com.tw/pc/brief_it8705f.htm.
For accessing the IT8705F chipset, we need to use the I2C protocol.
I2C is a protocol developed by Philips.
SMBus (System Management Bus) is a subset of the I2C protocol.
For more informations, see http://semiconductors.philips.com/buses/i2c/.
For monitoring the voltage, the fan speed, the CPU and the mainboard temperature, you need the lm_sensors package.
Get the latest version from http://secure.netroedge.com/~lm78/.
As root, install the package :
[root@localhost /root]# rpm -ivh lm_sensors-2.6.x-xxx.rpm
As root, run /usr/sbin/sensors-dectect
and follow the instructions. This program will not detect the I2C/SMBus and will detect two drivers with the ISA bus :
Driver `sis5595' (should be inserted):
Detects correctly:
* ISA bus, undetermined address (Busdriver `i2c-isa')
Chip `Silicon Integrated Systems SIS5595' (confidence: 9)
Driver `it87' (should be inserted):
Detects correctly:
* ISA bus address 0x0290 (Busdriver `i2c-isa')
Chip `ITE IT8705F / IT8712F / SiS 950' (confidence: 8)
You should use the it87 driver. The sis5595 driver is not adapted to the K7S6A mainboard.
In newer versions of lm_sensors, the I2C/SMBus of the SIS745 chipset is accessible via the i2c-sis645 driver, but I didn't try it.
Edit /etc/modules.conf
and add to it the following lines:
alias char-major-89 ic2-dev
options it87 temp_type=0x38
temp_type=0x38
means that the chipset provides three thermal inputs from remote thermistors. This option is used to get the good temperature values.
Edit /etc/sysconfig/lm-sensors
and change the following lines:
MODULE_1=i2c-dev
MODULE_2=i2c-isa
MODULE_3=i2c-proc
MODULE_4=it87
Now as root you should edit your /etc/sensors.conf
file, search for that line : chip "it87-*"
and below you should modify these lines :
chip "it87-*"
label in0 "VCore"
label in1 "Vcc +2.5V"
label in2 "Vcc +3.3V"
label in3 "Vcc +5.0V"
label in4 "+12V"
label in5 "-12V"
ignore in6
label in7 "StBy 5.0V"
ignore in8
# vid is not monitored by IT8705F
ignore vid
set in0_min 1.75 * 0.95
set in0_max 1.75 * 1.05
set in1_min 2.4
set in1_max 2.68
set in2_min 3.3 * 0.93
set in2_max 3.3 * 1.07
set in3_min 5.0 * 0.93
set in3_max 5.0 * 1.07
set in4_min 12 * 0.90
set in4_max 12 * 1.10
set in5_max -12 * 0.90
set in5_min -12 * 1.10
#set in6_max 1 * 0.95
#set in6_min 1 * 1.05
set in7_min 5 * 0.95
set in7_max 5 * 1.05
#the chip does not support in8 min/max
compute in2 (1)*@ , @/(1)
compute in3 ((6.8/10)+1)*@ , @/((6.8/10)+1)
compute in4 ((30/10) +1)*@ , @/((30/10) +1)
compute in5 -(36/10)*@, -@/(36/10)
#compute in6 -(56/10)*@, -@/(56/10)
compute in7 ((6.8/10)+1)*@, @/((6.8/10)+1)
# Temperature
label temp1 "MB temp"
set temp1_over 75
set temp1_hyst 20
label temp2 "CPU temp"
set temp2_over 75
set temp2_hyst 25
ignore temp3
# Fans
label fan1 "CPU Fan"
set fan1_min 2000
set fan1_div 8
ignore fan2
ignore fan3
As root, load the modules :
[root@localhost /root]# insmod i2c-core
[root@localhost /root]# insmod i2c-dev
[root@localhost /root]# insmod i2c-proc
[root@localhost /root]# insmod i2c-isa
[root@localhost /root]# insmod it87
Verify that the modules are well loaded :
[root@localhost /root]# lsmod
Module Size Used by Not tainted
...
it87 6852 0 (unused)
i2c-proc 7088 0 [it87]
i2c-isa 1224 0 (unused)
i2c-dev 4420 0 (unused)
i2c-core 15332 0 [it87 i2c-proc i2c-isa i2c-dev]
...
And initialize the sensors :
[root@localhost /root]# sensors -s
Test if you get the sensors monitoring :
[ced@localhost /home/ced]# sensors
it87-isa-0290
Adapter: ISA adapter
Algorithm: ISA algorithm
VCore: +1.79 V (min = +1.66 V, max = +1.82 V)
Vcc +2.5V: +2.65 V (min = +2.40 V, max = +2.68 V)
Vcc +3.3V: +3.21 V (min = +3.05 V, max = +3.53 V)
Vcc +5.0V: +4.84 V (min = +4.64 V, max = +5.34 V)
+12V: +12.32 V (min = +10.80 V, max = +13.16 V)
-12V: -12.10 V (min = -13.18 V, max = -10.80 V) ALARM
StBy 5.0V: +4.70 V (min = +4.72 V, max = +5.24 V) ALARM
CPU Fan: 5273 RPM (min = 664 RPM, div = 8)
MB temp: +43°C (min = +20°C, max = +75°C)
CPU temp: +58°C (min = +25°C, max = +75°C)
If everything goes well, run /etc/rc.d/init.d/sensors start
at boot-time. This script will automatically load the modules and launch the sensors daemon.