Can not get fan control going in wheezy. Any help appreciated

[Tim Long <timwarm@gmail.com>]

Hi all,

I have just updated my laptop (HP Compaq 6730s)  to Wheezy and I am
diagnosing my first problem. The fan control deamon refuses to run and
I think lm-sensors is unable to find/configure the fan control system.
I suspect it a bug with the lm-sensors package.

After the install I get the following message on boot up:
===
[warn] Not starting fancontrol; run pwmconfig first. ... (warning).
===

Running pwmconfig I get the following error message:
===
/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed
===

Running the 'sensors' command I turn up the following:
===
acpitz-virtual-0
Adapter: Virtual device
temp1:        +53.0°C  (crit = +110.0°C)
temp2:        +49.0°C  (crit = +256.0°C)
temp3:        +49.0°C  (crit = +112.0°C)
temp4:        +51.0°C  (crit = +105.0°C)
temp5:        +30.6°C  (crit = +112.0°C)
temp6:        +50.0°C  (crit = +110.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Core 0:       +45.0°C  (high = +105.0°C, crit = +105.0°C)
Core 1:       +49.0°C  (high = +105.0°C, crit = +105.0°C)

===

Googling around for the problem I think the problem is that the
sensors command is not listing any fan control devices. Can anyone
confirm that this is the problem?

 I did run sensor-detect to find any chipset specific modules and it
added 'coretemp' to /etc/modules but I think detected no chipset
specific modules. What is interesting is that it found an unknown
Super I/O chip:
===
....
Some Super I/O chips contain embedded sensors. We have to write to
standard I/O ports to probe them. This is usually safe.
Do you want to scan for Super I/O sensors? (YES/no): y
Probing for Super-I/O at 0x2e/0x2f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     Yes
Found unknown chip with ID 0x4501
Probing for Super-I/O at 0x4e/0x4f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Nuvoton/Fintek'...               No
Trying family `ITE'...                                      No
...
===

I think that the problem is that the kernel can not figure out how to
control the fan. Is this the correct diagnosis or have I done a
misdiagnosis? In my google searches I found references to control
files like /sys/class/hwmon/hwmon0/device/fan1_input which don't exist
on my system.

Any help would be appropriated. I think I need to report a bug with
the lm-sensors package.

Tim.