high cpu temp and fan speed problem

[Nathan BIAGINI]

2010/5/9 Ian Smith <smithi at nimnet.asn.au>

> Nathan, I replied without noticing that you had not copied the list; I
> don't mind direct replies, but please keep the list in the ccs.
>
> On Sun, 9 May 2010, Nathan BIAGINI wrote:
>  > 2010/5/9 Ian Smith <smithi at nimnet.asn.au>
>  >
>  > > On Sun, 9 May 2010, Nathan BIAGINI wrote:
>  > >  > Hi,
>  > >  >
>  > >  > i bought a hp pavilion dv6-1123ef laptop and i've installed FreeBSD
> 8.0
>  > > on
>  > >  > it. Everything work except one think : i can't do high-cpu task.
> The
>  > > problem
>  > >  > is when i run a high-cpu task (no very high in fact), my cpu
> temperature
>  > > can
>  > >  > increase to 90°C and when it's the case, system go down. Further, i
>  > > heard
>  > >  > the fans are running. When i work on windows (short time), i never
> had
>  > > this
>  > >  > kind of problem so i think is may be a kernel config problem.
>  > >
>  > > Sounds perhaps similar to some recent issues, but first we need to
> know
>  > > more about your laptop .. please show output of:
>  > >
>  > > % sysctl hw.acpi
>  > > % sysctl dev.cpu
>  > > % grep -i acpi /var/run/dmesg.boot
>
> Sorry, my 8.0 laptop is memtesting new RAM today so I didn't check that.
> Still need to know what make/model CPU it has, and what cpufreq drivers
> it uses .. can you post the whole dmesg.boot ? (just plain, not verbose)
>
>  > >  > I precise that when i want to run mbmon to minitor cpu temp and fan
>  > > speed
>  > >  > (compiled form the ports), it return an unknow error like what no
>  > > hardware
>  > >  > monitor is found, the cause of my problem?
>  > >
>  > > mbmon only works with some hardware, and then needs tweaking
> sometimes;
>  > > worry about that if it doesn't look like an acpi and/or cpufreq issue.
>  > >
>  > > Temperature at least should be shown by sysctl dev.cpu.N.temperature.
>
> Oops again - that should say hw.acpi.tz0.temperature (as below)
>
>  > Thanks for your help. I'm new in the world of UNIX and FreeBSD ;)
>  >
>  > I've joined the outputs of the commands in this message.
>
> Ok.  If things aren't too big they're perhaps better posted inline, so
> I'll quote a few bits that look a bit strange regarding temperatures:
>
>  > acpi_tz0: _CRT value is absurd, ignored (-273.2C)
> ..
>  > hw.acpi.thermal.min_runtime: 0
>  > hw.acpi.thermal.polling_rate: 10
>  > hw.acpi.thermal.user_override: 0
>  > hw.acpi.thermal.tz0.temperature: 56.0C
>  > hw.acpi.thermal.tz0.active: -1
>  > hw.acpi.thermal.tz0.passive_cooling: 1
>  > hw.acpi.thermal.tz0.thermal_flags: 0
>  > hw.acpi.thermal.tz0._PSV: 135.0C        <<<---
>  > hw.acpi.thermal.tz0._HOT: 90.0C         <<<---
>  > hw.acpi.thermal.tz0._CRT: -1            <<<---
>  > hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
>  > hw.acpi.thermal.tz0._TC1: 2
>  > hw.acpi.thermal.tz0._TC2: 5
>  > hw.acpi.thermal.tz0._TSP: 50
>  > hw.acpi.cpu.cx_lowest: C1
>
> The _PSV (passive cooling) temp is 'absurd' also; it certainly should be
> lower than _HOT - which looks possibly right at 90C - and _CRT (critical
> shutdown) definitely should be there, probably <= 100C.
>
> Is it running the latest available BIOS update?
>
>  > dev.cpu.0.freq: 250
>  > dev.cpu.0.freq_levels: 2000/35000 1750/30625 1500/26250 1250/21875
>  >  1000/17500 750/13125 500/8750 250/4375
>  > dev.cpu.0.cx_supported: C1/1 C2/57
>  > dev.cpu.0.cx_lowest: C1
>
> Maybe more about these after seeing your dmesg.boot ..
>
> cheers, Ian
>

Ok, so. I tried to understand.

The whole dmesg.boot file : http://pastebin.com/U4p8Y8Pi (inline ,))

I don't really know if i have the last available BIOS version, i never
upgrade it manually...

Now, i read the acpi man page and i don't see anything concerning
hw.acpi.tz0.temperature, it is a sysctl option?

_HOT should be set to 90°C and _PSV should be set to a less value than _HOT?
and _CRT to a greater value? 100°C. I understand there is a problem with
this values but i don't understand how i have to set them.