Red Hat Bugzilla – Bug 139878
system hard locks when lm_sensors is started
Last modified: 2015-03-04 20:14:35 EST
Description of problem:
When 'sensors -s' is run, system hard locks (i.e. requires power
cycling to reset) IF lm85 is present AND cpu core temperature is >50C.
This can be avoided if the lm85 section in sensors.conf has the:
parameters set to something above the current CPU temp (in my case, I
changed them both to 70C).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. install FC3 on a machine with an lm85 sensor chip
2. run sensors-detect
3. wait until CPU core temperature is above 50C
4. start lm_sensors
This bug was noticed on a Dell Pentium 4 (with typically terrible OEM
cooling) where the CPU temperature routinely hits 68C with 100% CPU
usage. With all the hot running Prescott cored CPUs in wide use
today, perhaps changing the default value of temp1_max and temp2_max
(at least for sensor chips commonly used on P4s) to something higher
might be in order?
The current lm_sensors-2.9.1 which is in devel has 65C resp. 70C for temp1_max
resp. temp2_max for that chipset and i'd rather not deviate from these obviously
Read ya, Phil