Re: Heating issues with FreeBSD on laptop

Hi,

This laptop is new (I bought it just earlier this year), and I have 
also dual booted it with Fedora Linux which works completely okay, so I 
don't think this is a case of a CPU hardware issue ...

Thanks for your help, though.

Saniya

On Tue, Sep 27 2022 at 09:07:29 AM +0300 +0300, Mehmet Erol Sanliturk 
<m.e.sanliturk@gmail.com> wrote:
> 
> 
> On Tue, Sep 27, 2022 at 8:09 AM Ian Smith <smithi@nimnet.asn.au 
> <mailto:smithi@nimnet.asn.au>> wrote:
>> On 27 September 2022 2:39:41 am AEST, Saniya Maheshwari 
>> <saniya.mah@gmail.com <mailto:saniya.mah@gmail.com>> wrote:
>>   > Hi,
>>   >
>>   > I just installed FreeBSD on my laptop, and everything went 
>> smoothly,
>>   > except one thing that my laptop seems to be a little warm and 
>> noisy
>>   > (due to the fans) even when it's idle.
>> 
>>  What make and model laptop?
>> 
>>  What version of FreeBSD?
>> 
>>   > Following some steps on other forums, I tried the following:
>>   >
>>   > $ sysctl 'hw.acpi.thermal'
>>   >
>>   > This gives me an 'unknown oid' error.
>>   >
>>   > $ sysctl -a | grep temp
>>   >
>>   > This gives no results.
>> 
>>  Please show results of
>> 
>>  $ sysctl hw.acpi
>> 
>>  If none, acpi.ko isn't loaded.
>> 
>>  Otherwise select Verbose Booting from the startup menu, and scan 
>> results in /var/run/dmesg.boot to look for errors while booting.
>> 
>>  You may need to put that file up on some site, and post a link to 
>> it here.
>> 
>>   > After running
>>   >
>>   > # kldload coretemp
>>   >
>>   > and retrying:
>>   >
>>   > $ sysctl -a | grep temperature
>>   >
>>   > I do get the CPU temperature values:
>>   >
>>   > dev.cpu.15.temperature: 51.0C
>>   > dev.cpu.13.temperature: 50.0C
>>   > dev.cpu.11.temperature: 50.0C
>>   > ...
>>   >
>>   > All this is when the laptop is absolutely idle with just the 
>> shell
>>   > running in the TTY. I can confirm that
>>   >
>>   > # top
>>   >
>>   > shows the same (CPU 100% idle).
>>   >
>>   > I'm not sure what is going wrong and would be grateful for any 
>> help.
>> 
>>  How about:
>> 
>>  $ sysctl -a | grep fan
>> 
>>  cheers, Ian
>> 
>> 
> 
> 
> 
> Many years ago I encountered such a case in DragonflyBSD :
> Frequently messages were displayed about high temperatures with 
> increased fan revolutions .
> 
> Later , I installed Linux .
> The high temperature messages with accompanying fan revolution 
> increases continued .
> In the end , the CPU completely failed .
> 
> This means , a CPU during progressive failure may show such high 
> temperature increases .
> 
> 
> With my best wishes .
> 
> 
> Mehmet Erol Sanliturk
> 
> 
> 
>