[NTLUG:Discuss] OS Thermal shutdown - 90c

[Steve Litt]

On Sat, 19 Sep 2015 19:18:36 -0500
Stephen Davidson <gorky at freenet.carleton.ca> wrote:

> Greetings.
> 
> Many thanks to those from the Linux install project today for
> helping/solving various issues I had run into.  One issue still
> outstanding is the "false alert" thermal shutdown.  Per discussion, I
> eventually figured out how to uninstall lm-sensors.  However, when the
> system was loaded, again it shutdown under load.  From the logs:
> ====
> kernel: [1082.269446] thermal thermal_zone0: critical temperature
> reached (90 C), shutting down
> ====
> 
> The BIOS doesn't even run the fans to maximum until the system hits
> 80-85c.
> 
> While doing additional research, I found that there had been a known
> issue with HP BIOSes incorrectly reporting critical temperatures to
> the OS, and MS making many enhancements to MS Vista to deal with this
> (the machine in question is from the era of Vista, btw).  The most
> egregious reported incident was where the machine reported a critical
> temperature of -70c (yes, that's 70c below freezing as maximum
> operating temp) to the OS.
> 
> I have found many additional reports and complaints of premature
> shutdown due to temperatures above "Kernel Approved values", but I've
> NOT found any way to adjust/correct this.  (The most complaints I've
> seen had to do with CPUs with manufacturer maximums of 145c, although
> THOSE systems seem to have their shutdowns kicking in at the 105
> and/or 125c mark).
> 
> I've spent ANOTHER DAY trying to chase this down (ok, only 1/2 the
> morning as well as the entire afternoon), still w/o success.  With
> what this particular item is costing me (including in $$ as well as
> time), I'm really needing some help or direction.
> 
> Regards,
> Steve

I had something similar once, but not with HP equipment. I solved it
with a bios upgrade.

SteveT

Steve Litt 
August 2015 featured book: Troubleshooting: Just the Facts
http://www.troubleshooters.com/tjust