[lm-sensors] LM75: "ERROR: Can't get temperature data!"

[Jean Delvare]

Hi Michael,

On Fri, 02 Nov 2007 16:30:13 -0500, Michael Brian Willis wrote:
> I am having trouble getting my LM75 temp sensor to work on a custom
> embedded system. I have two MAX1619 chips that appear to be recognized
> by the "sensors" command. Also, "sensors-detect" seems to find
> everybody. However, I get "ERROR: Can't get temperature data" for the
> LM75 when I run the "sensors" command (see below).  
> 
> --------
> [root at myboard]# sensors
> max1619-i2c-0-19
> Adapter: MPC adapter
> M/B Temp: 33.00 (temp1)
> CPU Temp: 0.00 (temp2)
> 
> max1619-i2c-0-1a
> Adapter: MPC adapter
> M/B Temp: 30.00 (temp1)
> CPU Temp: 127.00 (temp2)
> 
> lm75-i2c-0-48
> Adapter: MPC adapter
> ERROR: Can't get temperature data!
> 
> Here are some relevant version numbers: 
> Denx Linux kernel: 2.6.21
> libsensors: 2.10.5
> sysfsutils: 2.1.0
> i2ctools: 3.0.0

Note: i2ctools doesn't matter here.

> --------
> 
> I have the LM75 kernel module loaded: 
> [root at myboard]# lsmod
> Module                  Size  Used by
> lm75                    4592  0
> max1619                 5776  0
> 
> Any help anybody can provide is greatly appreciated, 

Odd. Please check that no older libsensors version gets in the way
(sensors -v). If you have strace installed, please provide the output
of "strace sensors".

Also, please provide the output of "ls -lR /sys/class/hwmon/*/device/".

-- 
Jean Delvare