Hi,
On Tue, 12 Apr 2011 19:02:19 +0200, Ian Dobson wrote:
Hi,
--------------------------------------------------
From: "Mike Campin" <lm_sensors at ootsa.homelinux.net>
Sent: Sunday, April 10, 2011 6:04 PM
To: <lm-sensors at lm-sensors.org>
Subject: NCT6776 global registers 0x1c=0 and 0x24=0x5c onASRock
Extreme4
> Hi,
>
> Only 2 of the 5 fans are showing up on my ASRock P67 Extreme4 motherboard.
> It due to the NCT6776 global configuration register 0x1c and 0x24 values.
> The fans work if I modify these registers prior to loading the w83627ehf
> driver.
>
> My question is where are these registers initialized? Should I ask ASRock
> to fix the BIOS?
>
> isadump -y -k 0x87,0x87 0x2e 0x2f
>
> 0 1 2 3 4 5 6 7 8 9 a b c d e f
> 00: ff ff 00 ff ff ff ff 02 ff ff ff ff ff ff ff ff
> 10: ff ff ff ff ff ff ff ff ff ff f8 0e 00 00 ff ff
> 20: c3 33 ff 00 5c 00 00 98 00 ff 20 00 80 00 00 01
> 30: 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>
> isaset -y -f 0x2e 0x87
> isaset -y -f 0x2e 0x87
> isaset -y 0x2e 0x2f 0x1c 0x3
> isaset -y 0x2e 0x2f 0x24 0x1c
>
> Thanks, Mike
>
> --
> Mike Campin
> lm_sensors at ootsa.homelinux.net
>
> _______________________________________________
> lm-sensors mailing list
> lm-sensors at lm-sensors.org
> http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
ASRock designed the board, so they should setup the hardware monitoring chip
correctly. Allowing users to change the chip configuration is a really bad
idea, as many of the pins can have different functionality/electrical
spcifications depending on the config. Setting up a pin incorrectly could
blow the chip (Configuring a pin so that it's a source that's connected to
an unprotected/limited sink for example).
So ASRock should fix the BIOS.
Seconded. But before flaming Asrock, two things worth checking:
* Availability of a BIOS update fixing the issue.
* Options in the BIOS to enable/disable the monitoring of specific
fans. I can imagine that the BIOS skips the configuration steps for
fans for which monitoring was disabled (although that would probably
mean more code than just doing it unconditionally...)
--
Jean Delvare
I own an Asrock P67 Extreme4 too and have the same problem. It can be
solved by following Mike Campin's instructions, which I successfully
incorporated into /etc/init.d/lm_sensors. There is no BIOS available
that fixes this issue, but I noticed that SpeedFan for Windows
(www.almico.com/speedfan.php) seems to do something similar, otherwise
it would show only 2 fans too. So maybe we could get that into
lm_sensors, even if the BIOS is at fault here?
Regards,
Harald
--
`Experience is the best teacher.'
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