Your motherboard BIOS includes fan speed control and a BMC for sensor
monitoring
Use ipmitool and perhaps bmcsensors module to monitor sensors.
Go into the bios and under hardware monitoring arrow down to see fan
speeds and then select the ES fan profile (lowest) rather than Off,
performance, balanced. That should make the fan speeds much slower and
quieter
Phil P.
--
Philip Pokorny, RHCE
Chief Hardware Architect
PENGUIN COMPUTING, Inc
www.penguincomputing.com
On Apr 12, 2011, at 4:37 AM, Erik Brakkee <erik@xxxxxxxxxxx> wrote:
Hi,
I encountered major system instability when using the w83795 module
together with fancontrol on a X8DTI-F motherboard running opensuse
11.3. The processor is an Intel Xeon L5630.
I did the experiments early this year with version 0.7 of the
driver. Actually fancontrol really worked well, keeping the system
really quiet.
However, I experienced random hangs of the system and also there
were a lot of events in the logs such as these:
1 | 12/16/2010 | 14:30:02 | Fan #0x13 | Lower Non-critical going low
2 | 12/16/2010 | 14:30:02 | Fan #0x13 | Lower Critical going low
3 | 12/16/2010 | 14:30:03 | Fan #0x13 | Lower Non-recoverable
going low
4 | 12/16/2010 | 14:30:05 | Fan #0x13 | Lower Non-recoverable
going low
5 | 12/16/2010 | 14:30:06 | Fan #0x13 | Lower Critical going low
6 | 12/16/2010 | 14:30:06 | Fan #0x13 | Lower Non-critical going low
The theory somehow was that there was concurrent access by the
embedded BMC controller and the driver.
After disabling fancontrol the system went from highly unstable to
rock solid. I even tried monitoring the system at periodic intervals
using the w83795 driver and that resulted in the same types of
events, exactly coinciding with the periodic polling.
In other words, I am quite clear that this is related to the driver
or at least an interworking between the driver and the embedded BMC.
I have now switched off fancontrol permanently but would like to
eventually enable it again because the system is just much more
quiet (it is a home server with low load).
Any suggestions? Have similar problems been found?
Cheers
Erik
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