Re: [lm-sensors] Some W83627HG-AW chip

[Jean Delvare <khali@linux-fr.org>]

Hi Láďa,

On Wed, 25 Apr 2007 10:42:04 +0200, Láďa wrote:
> W83627HG-AW is another surprise from SuperMicro, there should be W8327EHG on
> board (they are not so precise). Here is some output from sensors-detect:
> 
> Driver `w83793' (should be inserted):
>   Detects correctly:
>   * Bus `SMBus I801 adapter at 1100'
>     Busdriver `i2c-i801', I2C address 0x2f
>     Chip `Winbond W83793R/G' (confidence: 8)
> .....
> Driver `w83781d' (should be inserted):
>   Detects correctly:
>   * ISA bus address 0x0290 (Busdriver `i2c-isa')
>     Chip `Winbond W83627HF' (confidence: 8)
> Driver `w83627hf' (should be inserted):
>   Detects correctly:
>   * ISA bus address 0x0295 (Busdriver `i2c-isa')
>     Chip `Winbond W83627HF Super IO Sensors' (confidence: 9)
> 
> both modules are compiled in kernel, but sensors doesn't show useful output:

Which "both"? There are three kernel modules listed above, w83793,
w83781d and w83627hf. The sensors-detect script is wrongly suggesting
two drivers for the same device. This is fixed by now, I guess you are
using a somewhat old version of the script.

So the bottom line is that you should NOT use the w83781d driver.

> 
> w83627hf-isa-0290
> Adapter: ISA adapter
> VCore 1:   +0.03 V  (min =  +1.09 V, max =  +1.50 V)       ALARM
> VCore 2:   +0.05 V  (min =  +1.09 V, max =  +1.50 V)       ALARM
> +3.3V:     +0.05 V  (min =  +2.82 V, max =  +3.79 V)       ALARM
> +5V:       +5.08 V  (min =  +1.10 V, max =  +4.89 V)       ALARM
> +12V:      +0.12 V  (min = +13.80 V, max =  +0.55 V)       ALARM
> -12V:     -14.66 V  (min =  -1.01 V, max =  +1.37 V)       ALARM
> -5V:       -7.56 V  (min =  -6.00 V, max =  -1.98 V)       ALARM
> V5SB:      +5.59 V  (min =  +4.78 V, max =  +0.59 V)       ALARM
> VBat:      +3.36 V  (min =  +3.78 V, max =  +2.19 V)       ALARM
> fan1:        0 RPM  (min =    0 RPM, div = 2)
> fan2:        0 RPM  (min = 8766 RPM, div = 2)              ALARM
> fan3:        0 RPM  (min = 3054 RPM, div = 2)              ALARM
> temp1:      +126 C  (high =   +26 C, hyst =   -86 C)   sensor = thermistor
> ALARM
> temp2:    +126.5 C  (high =   +80 C, hyst =   +75 C)   sensor = thermistor
> ALARM
> temp3:    +126.5 C  (high =   +80 C, hyst =   +75 C)   sensor = thermistor
> ALARM
> vid:      +1.519 V  (VRM Version 11.0)
> alarms:   Chassis intrusion detection                      ALARM
> beep_enable:
>           Sound alarm enabled
> 
> I am using Gentoo Linux, gentoo-sources-2.6.19, architecture amd64. Btw. I
> was a bit surprised that amd64 kernel is missing CONFIG_ISA option, but
> needed i2c-isa seems to be compiled well according to kernel make output:
> 
> CC      drivers/i2c/busses/i2c-isa.o

There are no ISA slots on x86_64 motherboards, so no CONFIG_ISA option,
but an ISA-like I/O space is still present so i2c-isa works.

> Any idea how to get this working? :-)

The output above strongly suggests that the W83627HF Super-I/O chip is
not wired for hardware monitoring. As you can see, all values except
V5SB and VBat are broken or missing.

Given that the motherboard appears to have a dedicated hardware
monitoring chip (W83793) it makes sense that Supermicro did not use the
hardware monitoring functions of the Super-I/O. So you want to unload
the w83267hf driver (or add ignore statements for everything but the
two working voltage lines in sensors.conf) and load the w83793 driver
instead. Except that this driver is new in 2.6.20, as can be seen on
our wiki:
http://www.lm-sensors.org/wiki/Devices

So you'll need to upgrade your kernel before you can monitor the
temperatures and fans on this motherboard.

-- 
Jean Delvare

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