[lm-sensors] Compatibility report: MSI 770-G45

roothorick roothorick at gmail.com
Mon Sep 27 02:55:58 CEST 2010

My primary desktop is built around an MSI 770-G45 motherboard. The BIOS
shows three fanspeeds (CPU FAN, SYS FAN 1, SYS FAN 2), two temperatures (CPU
and "System"), and four voltages (CPU Vcore, 3.3V, 5V, and 12V). My CPU is a
Phenom II; k10temp detects it uneventfully and the values given are within
2-3 degrees of what the BIOS says. The board has a Fintek F71889FG (or
derivative; the driver detects it and returns valid values) but it's sitting
in an ACPI zone...

I'm using acpi_enforce_resources=lax, and getting this in dmesg every time
f71882 is loaded:
[27466.942766] f71882fg: Found f71889fg chip at 0x600, revision 21
[27466.942826] ACPI: resource f71882fg [io  0x0600-0x0607] conflicts with
ACPI region HMOR [mem 0x00000605-0x00000606 64bit pref window]
[27466.942833] ACPI: This conflict may cause random problems and system
[27466.942838] ACPI: If an ACPI driver is available for this device, you
should use it instead of the native driver

I'm not seeing any stability problems. What voltages I can translate are
well within correct ranges.

I've made an incomplete .conf for this board (with guessed voltage, and with
it, sensors gives me this:
Adapter: ISA adapter
3.3V:          +3.36 V
Vcore:         +0.98 V  (max =  +2.04 V)
in2:           +1.08 V
in3:           +0.90 V
in4:           +0.58 V
in5:           +0.38 V
in6:           +0.29 V
3.3V (again?): +3.36 V
Vbat:          +3.28 V
CPU:          1347 RPM
System1:         0 RPM  ALARM
System2:         0 RPM  ALARM
CPU:           +30.0°C  (high = +255.0°C, hyst = +251.0°C)
                        (crit = +255.0°C, hyst = +251.0°C)  sensor = Intel
System:        +33.0°C  (high = +255.0°C, hyst = +253.0°C)
                        (crit = +255.0°C, hyst = +253.0°C)  sensor =

Note: Vcore (in1) jumps up to 1.4V (what my CPU is supposed to run at) when
the processor is under load; I'm guessing this is some kind of thermal
control feature. There are three fan headers on the board (one 4-pin two
3-pin); I just don't have anything connected to two of them.

I attached my .conf.

Any guesses what in2-in6 may be, and the correct multipliers for them?
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# This is obviously very incomplete. We have no idea what in2 through in6
# are.
chip "f71889fg-*"
        label temp1 "CPU"
        ignore temp2 # Not present in BIOS
        label temp3 "System"

        label fan1 "CPU"
        label fan2 "System1" # Using BIOS labels here
        label fan3 "System2"

	# Vram isn't present. You can play with the DRAM voltage in the BIOS
	# all you want and none of the values will change.
	# The BIOS gives voltage values for 5V and 12V so they have to be in
	# here.... *somewhere*. Your guess is as good as mine.
        label in0 "3.3V"
        label in1 "Vcore"
        label in7 "3.3V (again?)"
        label in8 "Vbat"

# in0, in7, and in8 appear to be hardwired the same way they are on
# the 71882; at least the numbers make sense that way.
        compute in0 (@ * 2), (@ / 2)
        # in1 is already correct
        compute in7 (@ * 2), (@ / 2)
        compute in8 (@ * 2), (@ / 2)

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