Hi Karsten, On Fri, 22 Oct 2010 16:04:10 +0200, karsten@xxxxxxxxxxx wrote: > hi Jean, > > The w83795 driver uses the same detection mechanism used in > > sensors-detect. So if sensors-detect doesn't see your chip, I am not > > surprised that the driver didn't either. > > > The full output of sensors-detect is needed to diagnose your problem > > further. It could be that your SMBus controller isn't supported, or > > maybe you are supposed to access the chip through IPMI. > > IPMI is probably the key.. > > From the sensors-detect output: > "Warning: the required module ipmisensors is not currently installed > on your system. If it is built into the kernel then it's OK. > Otherwise, check http://www.lm-sensors.org/wiki/Devices for > driver availability" (full ouput attached) > > I did see the output before, but didn't really understand the > implications (IPMI seems to be an alternative way of accessing the > monitoring chips?) Yes. The strength of IPMI access is that it can be used remotely too, for example from a BMC plugged into your system. > The suggested ipmisensors driver however does not seem to be available, right? > (http://lm-sensors.org/wiki/Devices says "(2004-12-12) Port to Linux > 2.6 in progress by Yani Ioannou") That project is essentially dead. At the time being, the best way to retrieve IPMI-based sensor values is using "ipmitool sensor". The drawback is that this isn't integrated with libsensors, so the usually monitoring applications won't work. If you have a BMC or are otherwise already using IPMI on your machine, just use ipmitool and you're done. If not, then it might be worth trying ipmitool once, and then try sensors-detect again. There is a small chance that, once ipmitool managed to access the monitoring device, sensors-detect will see it. My own mainboard which has a W83795ADG chip has a multiplexed SMBus, and I can only see the W83795ADG in sensors-detect when the multiplexer is set properly. Otherwise I would see the memory modules, which _do_ appear in your sensors-detect output. So maybe your board has a multiplexed SMBus too. If the trick doesn't work, you may want to try the new jc42 driver which can monitor the temperature of some DDR3 memory modules. I suspect your memory modules have such sensors. A more recent version of sensors-detect would confirm that: http://dl.lm-sensors.org/lm-sensors/files/sensors-detect I also see that sensors-detect suggested to use the k10temp driver, which your kernel doesn't have. You can try the standalone flavor of the drivers which I maintain at: http://khali.linux-fr.org/devel/misc/k10temp/ The accuracy of the CPU internal sensors is limited, but that's still better than nothing. -- Jean Delvare http://khali.linux-fr.org/wishlist.html _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
