Hi all! I have a machine working for months now and sensors are being monitored with nagios, with no complaints. Two days ago the machine started to act weird and we decided to try to change the power supply. The new one was somewhat less powerfull (300VA instead of 400VA) but it worked. Surprisingly, nagios informed us that there where ALARMs in the sensors. We checked and it was true: vulcan:~# sensors w83627ehf-isa-0290 Adapter: ISA adapter VCore: +1.30 V (min = +0.00 V, max = +1.74 V) in1: +12.36 V (min = +9.98 V, max = +13.31 V) AVCC: +3.34 V (min = +1.04 V, max = +3.74 V) 3VCC: +3.31 V (min = +2.78 V, max = +1.65 V) ALARM in4: +2.04 V (min = +0.28 V, max = +1.98 V) ALARM in5: +1.62 V (min = +1.77 V, max = +1.44 V) ALARM in6: +5.20 V (min = +6.25 V, max = +4.02 V) ALARM VSB: +3.28 V (min = +2.40 V, max = +0.93 V) ALARM VBAT: +2.66 V (min = +0.66 V, max = +0.80 V) ALARM in9: +1.63 V (min = +1.07 V, max = +0.63 V) ALARM Case Fan: 0 RPM (min = 84 RPM, div = 128) ALARM CPU Fan: 2721 RPM (min = 1004 RPM, div = 8) Aux Fan: 0 RPM (min = 115 RPM, div = 128) ALARM fan4: 0 RPM (min = 10546 RPM, div = 128) ALARM Sys Temp: +35?C (high = +45?C, hyst = +5?C) ALARM CPU Temp: +38.5?C (high = +50.0?C, hyst = +5.0?C) AUX Temp: +44.5?C (high = +55.0?C, hyst = +5.0?C) vulcan:~# The machine is working all right since then, but the alarms continue. We changed the power supply again, to a more powerful one, but the alarms continue. The label mismatch on the "sensors" command output is a bit strange. Is seems like a problem in the conf file. But we didn't touch the conf file! We just changed the power supply! Any suggestions will very welcome. Thanks in advance! Fernando P.S.: Here goes some more info on the system: ======= *KERNEL* vulcan:~# uname -a Linux vulcan 2.6.18-4-686 #1 SMP Wed May 9 23:03:12 UTC 2007 i686 GNU/Linux ======= *SENSORS VERSION* vulcan:~# dpkg --list | grep sensors ii libsensors3 2.10.1-3 library to read temperature/voltage/fan sens ii lm-sensors 2.10.1-3 utilities to read temperature/voltage/fan se ======= *ISADUMP* vulcan:~# isadump 0x295 0x296 WARNING! Running this program can cause system crashes, data loss and worse! I will probe address register 0x295 and data register 0x296. Continue? [Y/n] 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: 04 ff 04 ff 00 2b 32 13 b2 55 b2 01 3c 3c 02 02 10: 04 ff 30 00 00 01 01 3c 43 17 00 00 57 00 00 d3 20: a1 e9 cd ce ff ca cc 23 ff 3f ff da 00 fc bd ea 30: 41 67 ae f7 23 b4 dd 9d f4 2d 05 7d a8 5b 01 ff 40: 03 00 00 de ff ff 00 f4 2d ff 40 c4 90 95 00 a3 50: ff ff 80 ff ff ff 00 80 a1 63 ff ff 19 a4 ff 05 60: 04 ff 00 00 01 01 3c ff 11 ff 01 ff ff ff ff ff 70: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 80: 04 ff 04 ff 00 2b 32 13 b2 55 b2 01 3c 3c 02 02 90: 04 ff 30 00 00 01 01 3c 43 17 00 00 57 00 00 d3 a0: a1 e9 cd ce ff ca cc 23 ff 3f ff da 00 fc bd ea b0: 41 67 ae f7 23 b4 dd 9d f4 2d 05 7d a8 5b 01 ff c0: 03 00 00 de ff ff 00 f4 2d ff 40 c4 90 95 00 a3 d0: ff ff 80 ff ff ff 00 80 a1 63 ff ff 19 a4 ff 05 e0: 04 ff 00 00 01 01 3c ff 11 ff 01 ff ff ff ff ff f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff vulcan:~# ======= *SENSORS_DETECT* vulcan:~# sensors-detect # sensors-detect revision 4171 (2006-09-24 03:37:01 -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): Probing for PCI bus adapters... Use driver `i2c-i801' for device 0000:00:1f.3: Intel ICH7 We will now try to load each adapter module in turn. Module `i2c-i801' already loaded. If you have undetectable or unsupported adapters, you can have them scanned by manually loading the modules before running this script. 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. Next adapter: SMBus I801 adapter at 0400 Do you want to scan it? (YES/no/selectively): Client found at address 0x08 Client found at address 0x30 Client found at address 0x32 Client found at address 0x44 Probing for `Maxim MAX6633/MAX6634/MAX6635'... No Client found at address 0x50 Handled by driver `eeprom' (already loaded), chip type `eeprom' Client found at address 0x52 Handled by driver `eeprom' (already loaded), chip type `eeprom' Client found at address 0x69 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 Probing for `Winbond W83627HF' at 0x290... No Probing for `Silicon Integrated Systems SIS5595'... No Probing for `VIA VT82C686 Integrated Sensors'... No Probing for `VIA VT8231 Integrated Sensors'... No Probing for `AMD K8 thermal sensors'... No Probing for `IPMI BMC KCS' at 0xca0... No Probing for `IPMI BMC SMIC' at 0xca8... 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 `ITE'... No Trying family `National Semiconductor'... No Trying family `SMSC'... No Trying family `VIA/Winbond/Fintek'... Yes Found `Winbond W83627EHF/EHG Super IO Sensors' Success! (address 0x290, driver `w83627ehf') Probing for Super-I/O at 0x4e/0x4f Trying family `ITE'... No Trying family `National Semiconductor'... No Trying family `SMSC'... No Trying family `VIA/Winbond/Fintek'... No Now follows a summary of the probes I have just done. Just press ENTER to continue: Driver `eeprom' (should be inserted): Detects correctly: * Bus `SMBus I801 adapter at 0400' Busdriver `i2c-i801', I2C address 0x50 Chip `eeprom' (confidence: 6) * Bus `SMBus I801 adapter at 0400' Busdriver `i2c-i801', I2C address 0x52 Chip `eeprom' (confidence: 6) EEPROMs are *NOT* sensors! They are data storage chips commonly found on memory modules (SPD), in monitors (EDID), or in some laptops, for example. Driver `w83627ehf' (should be inserted): Detects correctly: * ISA bus address 0x0290 (Busdriver `i2c-isa') Chip `Winbond W83627EHF/EHG Super IO Sensors' (confidence: 9) I will now generate the commands needed to load the required modules. Just press ENTER to continue: To make the sensors modules behave correctly, add these lines to /etc/modules: #----cut here---- # I2C adapter drivers i2c-i801 # Chip drivers eeprom w83627ehf #----cut here---- Do you want to add these lines to /etc/modules automatically? (yes/NO) ======= *I2CDETECT* vulcan:~# i2cdetect 0 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-0. I will probe address range 0x03-0x77. Continue? [Y/n] 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: XX XX XX XX XX 08 XX XX XX XX XX XX XX 10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 20: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX 30: 30 XX 32 XX XX XX XX XX XX XX XX XX XX XX XX XX 40: XX XX XX XX 44 XX XX XX XX XX XX XX XX XX XX XX 50: UU XX UU XX XX XX XX XX XX XX XX XX XX XX XX XX 60: XX XX XX XX XX XX XX XX XX 69 XX XX XX XX XX XX 70: XX XX XX XX XX XX XX XX vulcan:~# -- Fernando Fernandez web: http://www.moredata.pt