Hi Jean, > Oops, my bad. You'd have to copy the file to /usr/local/include/linux, > not /usr/local/include (please delete the one you copied there). While > you're at it, you could copy kernel/i2c-algo-bit.h too, since some bus > drivers in lm_sensors need it. you were partially right. ;-) By doing cp kernel/*.h /usr/local/include/linux it worked, the two files you mentioned were not enough. I checked my /usr/local/include/linux before, and it looked like drwxr-sr-x 2 root staff 4096 26. Nov 13:06 . drwxrwsr-x 14 root staff 4096 2. Jan 10:31 .. -rw-r--r-- 1 root staff 2197 26. Nov 13:03 i2c-algo-bit.h -rw-r--r-- 1 root staff 3140 26. Nov 13:03 i2c-algo-biths.h -rw-r--r-- 1 root staff 1867 26. Nov 13:03 i2c-algo-pcf.h -rw-r--r-- 1 root staff 12372 26. Nov 13:06 i2c-dev.h -rw-r--r-- 1 root staff 23343 26. Nov 13:03 i2c.h -rw-r--r-- 1 root staff 13330 26. Nov 13:03 i2c-id.h -rw-r--r-- 1 root staff 19385 26. Nov 13:03 i2c-proc.h -rw-r--r-- 1 root staff 53108 26. Nov 13:06 sensors.h so the files were old. Might this be a bug in i2c 2.9.0, that it does not copy files? I definitely issued a make install and received a "Successful"... However, somethings seems to be wrong nontheless. A "sensors" delivers me: CPU Fan: 5818 RPM (min = 84375 RPM, div = 8) ALARM look at the min RPM count... Thanks Florian