We have a Dell PowerEdge R200 rack mount machine. I don't much about the motherboard (I think Dell makes their own, don't they?). We've installed CentOS 5.3 (kernel version 2.6.18-128.1.6.el5). I've install lm_sensors 2.10 (from an RPM: lm_sensors-2.10.7-4.el5) and run sensors-detect. During the detection, it found nothing, except for the following: Found 'Nat. Semi. PC8374L Super IO Sensors' (but not activated) In looking at the Devices wiki, it looks like this chip is not supported. Is there any way to get sensors working on this machine? The sensors-detect output told me to look at the wiki FAQ item #4.24.3, but I was not able to find a reference like that in the FAQ. Thanks for any help IN case it's helpful, here is the complete output from the sensors-detect run on the machine: -------------------------------------------------------------------------- # sensors-detect revision 5291 (2008-06-23 23:40:46 -0700) This program will help you determine which kernel modules you need to load to use lm_sensors most effectively. It is generally safe and recommended to accept the default answers to all questions, unless you know what you're doing. We can start with probing for (PCI) I2C or SMBus adapters. Do you want to probe now? (YES/no): yes Probing for PCI bus adapters... Sorry, no supported PCI bus adapters found. If you have undetectable or unsupported I2C/SMBus adapters, you can have them scanned by manually loading the modules before running this script. To continue, we need module `i2c-dev' to be loaded. Do you want to load `i2c-dev' now? (YES/no): yes Module loaded successfully. We are now going to do the I2C/SMBus adapter probings. Some chips may be double detected; we choose the one with the highest confidence value in that case. If you found that the adapter hung after probing a certain address, you can specify that address to remain unprobed. Some chips are also accessible through the ISA I/O ports. We have to write to arbitrary I/O ports to probe them. This is usually safe though. Yes, you do have ISA I/O ports even if you do not have any ISA slots! Do you want to scan the ISA I/O ports? (YES/no): Probing for `National Semiconductor LM78' at 0x290... No Probing for `National Semiconductor LM78-J' at 0x290... No Probing for `National Semiconductor LM79' at 0x290... No Probing for `Winbond W83781D' at 0x290... No Probing for `Winbond W83782D' at 0x290... No Some Super I/O chips may also contain 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): Probing for Super-I/O at 0x2e/0x2f Trying family `National Semiconductor'... Yes Found `Nat. Semi. PC8374L Super IO Sensors' (but not activated) Probing for Super-I/O at 0x4e/0x4f Trying family `National Semiconductor'... No Trying family `SMSC'... No Trying family `VIA/Winbond/Fintek'... No Trying family `ITE'... No Some south bridges, CPUs or memory controllers may also contain embedded sensors. Do you want to scan for them? (YES/no): Silicon Integrated Systems SIS5595... No VIA VT82C686 Integrated Sensors... No VIA VT8231 Integrated Sensors... No AMD K8 thermal sensors... No AMD K10 thermal sensors... No Intel AMB FB-DIMM thermal sensor... No Sorry, no sensors were detected. Either your sensors are not supported, or they are connected to an I2C or SMBus adapter that is not supported. See doc/FAQ, doc/lm_sensors-FAQ.html or http://www.lm-sensors.org/wiki/FAQ (FAQ #4.24.3) for further information. If you find out what chips are on your board, check http://www.lm-sensors.org/wiki/Devices for driver status.