[gentoo-user] Laptop Overheat

[gentoo-user] Laptop Overheat

[Randy Westlund]

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Hey guys,

When I'm compiling something large and close the lid of my laptop (lid
close events disabled) or leave it on the couch where it can't get
proper airflow, it tends to overheat and crash.  If I leave it open and
on a table, everything is fine.

I have a quad-core processor and MAKEOPTS="-j5".  During compilation,
system load is around 5 and all 4 cores are maxed out.  My CPU temp is
99C or under, which is safe for this machine.

dmesg shows this every few minutes whenever my machine is at max temp,
which I've read is normal:

[ 2092.018902] CPU0: Core temperature above threshold, cpu clock throttled (total events = 179101)
[ 2092.018903] CPU2: Core temperature above threshold, cpu clock throttled (total events = 179101)
[ 2092.018906] CPU3: Package temperature above threshold, cpu clock throttled (total events = 227311)
[ 2092.018907] CPU1: Package temperature above threshold, cpu clock throttled (total events = 227311)
[ 2092.018908] CPU2: Package temperature above threshold, cpu clock throttled (total events = 227311)
[ 2092.018916] CPU0: Package temperature above threshold, cpu clock throttled (total events = 227311)
[ 2092.019864] CPU0: Core temperature/speed normal
[ 2092.019865] CPU2: Core temperature/speed normal
[ 2092.019866] CPU1: Package temperature/speed normal
[ 2092.019867] CPU3: Package temperature/speed normal
[ 2092.019868] CPU2: Package temperature/speed normal
[ 2092.019874] CPU0: Package temperature/speed normal
[ 2099.655532] mce: [Hardware Error]: Machine check events logged

At the time of crash, syslog contains a bunch of '^@^@^@^@^@^@^@...',
but nothing useful.

It looks like my cpu clock is being scaled, but perhaps not being scaled
enough.  I'm guessing the processor halts when I hit 100C.  Again, when
I leave it well-ventilated it never goes above 99C and everything is
fine.

Any ideas about where I should look?

Randy

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Re: [gentoo-user] Laptop Overheat

[Mick]

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On Tuesday 16 Dec 2014 21:16:38 Randy Westlund wrote:
> Hey guys,
> 
> When I'm compiling something large and close the lid of my laptop (lid
> close events disabled) or leave it on the couch where it can't get
> proper airflow, it tends to overheat and crash.  If I leave it open and
> on a table, everything is fine.
> 
> I have a quad-core processor and MAKEOPTS="-j5".  During compilation,
> system load is around 5 and all 4 cores are maxed out.  My CPU temp is
> 99C or under, which is safe for this machine.
> 
> dmesg shows this every few minutes whenever my machine is at max temp,
> which I've read is normal:
> 
> [ 2092.018902] CPU0: Core temperature above threshold, cpu clock throttled
> (total events = 179101) [ 2092.018903] CPU2: Core temperature above
> threshold, cpu clock throttled (total events = 179101) [ 2092.018906]
> CPU3: Package temperature above threshold, cpu clock throttled (total
> events = 227311) [ 2092.018907] CPU1: Package temperature above threshold,
> cpu clock throttled (total events = 227311) [ 2092.018908] CPU2: Package
> temperature above threshold, cpu clock throttled (total events = 227311) [
> 2092.018916] CPU0: Package temperature above threshold, cpu clock
> throttled (total events = 227311) [ 2092.019864] CPU0: Core
> temperature/speed normal
> [ 2092.019865] CPU2: Core temperature/speed normal
> [ 2092.019866] CPU1: Package temperature/speed normal
> [ 2092.019867] CPU3: Package temperature/speed normal
> [ 2092.019868] CPU2: Package temperature/speed normal
> [ 2092.019874] CPU0: Package temperature/speed normal
> [ 2099.655532] mce: [Hardware Error]: Machine check events logged
> 
> At the time of crash, syslog contains a bunch of '^@^@^@^@^@^@^@...',
> but nothing useful.
> 
> It looks like my cpu clock is being scaled, but perhaps not being scaled
> enough.  I'm guessing the processor halts when I hit 100C.  Again, when
> I leave it well-ventilated it never goes above 99C and everything is
> fine.
> 
> Any ideas about where I should look?
> 
> Randy

There may be nothing wrong with your configuration, but something wrong with 
the design of your laptop.  Some laptops are not designed particularly well 
with regards to ventilation.  In the summer I have a desk fan which I turn on 
and direct it on the side of the laptop, so that air blows above and below.  
The temperatures drop by more than 10-15C in a couple of minutes.  Perhaps you 
should try something similar.

-- 
Regards,
Mick

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Re: [gentoo-user] Laptop Overheat

[Randy Westlund]

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On Tue, Dec 16, 2014 at 11:18:54PM +0000, Mick wrote:
> There may be nothing wrong with your configuration, but something wrong with 
> the design of your laptop.  Some laptops are not designed particularly well 
> with regards to ventilation.  In the summer I have a desk fan which I turn on 
> and direct it on the side of the laptop, so that air blows above and below.  
> The temperatures drop by more than 10-15C in a couple of minutes.  Perhaps you 
> should try something similar.
> 
> -- 
> Regards,
> Mick

Okay, glad to hear I'm not doing something wrong.  I'll try to clean it
and be better about putting a wedge under it when I compile and walk
away.


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Re: [gentoo-user] Laptop Overheat

[J. Roeleveld]

On Tuesday, December 16, 2014 04:16:38 PM Randy Westlund wrote:
> Hey guys,
> 
> When I'm compiling something large and close the lid of my laptop (lid
> close events disabled) or leave it on the couch where it can't get
> proper airflow, it tends to overheat and crash.  If I leave it open and
> on a table, everything is fine.
> 
> I have a quad-core processor and MAKEOPTS="-j5".  During compilation,
> system load is around 5 and all 4 cores are maxed out.  My CPU temp is
> 99C or under, which is safe for this machine.
> 
> dmesg shows this every few minutes whenever my machine is at max temp,
> which I've read is normal:
> 
> [ 2092.018902] CPU0: Core temperature above threshold, cpu clock throttled
> (total events = 179101) [ 2092.018903] CPU2: Core temperature above
> threshold, cpu clock throttled (total events = 179101) [ 2092.018906] CPU3:
> Package temperature above threshold, cpu clock throttled (total events =
> 227311) [ 2092.018907] CPU1: Package temperature above threshold, cpu clock
> throttled (total events = 227311) [ 2092.018908] CPU2: Package temperature
> above threshold, cpu clock throttled (total events = 227311) [ 2092.018916]
> CPU0: Package temperature above threshold, cpu clock throttled (total
> events = 227311) [ 2092.019864] CPU0: Core temperature/speed normal
> [ 2092.019865] CPU2: Core temperature/speed normal
> [ 2092.019866] CPU1: Package temperature/speed normal
> [ 2092.019867] CPU3: Package temperature/speed normal
> [ 2092.019868] CPU2: Package temperature/speed normal
> [ 2092.019874] CPU0: Package temperature/speed normal
> [ 2099.655532] mce: [Hardware Error]: Machine check events logged
> 
> At the time of crash, syslog contains a bunch of '^@^@^@^@^@^@^@...',
> but nothing useful.
> 
> It looks like my cpu clock is being scaled, but perhaps not being scaled
> enough.  I'm guessing the processor halts when I hit 100C.  Again, when
> I leave it well-ventilated it never goes above 99C and everything is
> fine.
> 
> Any ideas about where I should look?
> 
> Randy

Try cleaning the vents.

Also, most couches have a tendency to compress when something like a laptop is 
on it. Effectively blocking all airflow.

If the temperature goes to 99C when on top of a table, return the laptop to 
the shop as it is clearly not working properly.

--
Joost

Re: [gentoo-user] Laptop Overheat

[Stefan G. Weichinger]

Am 17.12.2014 um 07:33 schrieb J. Roeleveld:

> Try cleaning the vents.
> 
> Also, most couches have a tendency to compress when something like a laptop is 
> on it. Effectively blocking all airflow.
> 
> If the temperature goes to 99C when on top of a table, return the laptop to 
> the shop as it is clearly not working properly.

When I compile bigger packages on my small ThinkPad X220 I sometimes put
it into the fridge ;-)

This effectively cools it down rather quickly ... and I ssh in via wifi.

Not to be tried at home ;-)

Re: [gentoo-user] Laptop Overheat

[Dale]

Stefan G. Weichinger wrote:
> Am 17.12.2014 um 07:33 schrieb J. Roeleveld:
>
>> Try cleaning the vents.
>>
>> Also, most couches have a tendency to compress when something like a laptop is 
>> on it. Effectively blocking all airflow.
>>
>> If the temperature goes to 99C when on top of a table, return the laptop to 
>> the shop as it is clearly not working properly.
> When I compile bigger packages on my small ThinkPad X220 I sometimes put
> it into the fridge ;-)
>
> This effectively cools it down rather quickly ... and I ssh in via wifi.
>
> Not to be tried at home ;-)
>
>

You don't have a fridge at home?  ROFL  Sorry, I couldn't pass that one
up.  ;-)

At one time, I thought about putting a rig that ran sorta warm in my
freezer. 

Dale

:-)  :-)

Re: [gentoo-user] Laptop Overheat

[Alan McKinnon]

On 17/12/2014 11:03, Dale wrote:
> Stefan G. Weichinger wrote:
>> Am 17.12.2014 um 07:33 schrieb J. Roeleveld:
>>
>>> Try cleaning the vents.
>>>
>>> Also, most couches have a tendency to compress when something like a laptop is 
>>> on it. Effectively blocking all airflow.
>>>
>>> If the temperature goes to 99C when on top of a table, return the laptop to 
>>> the shop as it is clearly not working properly.
>> When I compile bigger packages on my small ThinkPad X220 I sometimes put
>> it into the fridge ;-)
>>
>> This effectively cools it down rather quickly ... and I ssh in via wifi.
>>
>> Not to be tried at home ;-)
>>
>>
> 
> You don't have a fridge at home?  ROFL  Sorry, I couldn't pass that one
> up.  ;-)
> 
> At one time, I thought about putting a rig that ran sorta warm in my
> freezer. 


So you trade heat damage for water damage?


Hmmmmm, I'd be thinking it's time for new computer that DoesCoolingRight(tm)


-- 
Alan McKinnon
alan.mckinnon@gmail.com

Re: [gentoo-user] Laptop Overheat

[Dale]

Alan McKinnon wrote:
> On 17/12/2014 11:03, Dale wrote:
>> Stefan G. Weichinger wrote:
>>> Am 17.12.2014 um 07:33 schrieb J. Roeleveld:
>>>
>>>> Try cleaning the vents.
>>>>
>>>> Also, most couches have a tendency to compress when something like a laptop is 
>>>> on it. Effectively blocking all airflow.
>>>>
>>>> If the temperature goes to 99C when on top of a table, return the laptop to 
>>>> the shop as it is clearly not working properly.
>>> When I compile bigger packages on my small ThinkPad X220 I sometimes put
>>> it into the fridge ;-)
>>>
>>> This effectively cools it down rather quickly ... and I ssh in via wifi.
>>>
>>> Not to be tried at home ;-)
>>>
>>>
>> You don't have a fridge at home?  ROFL  Sorry, I couldn't pass that one
>> up.  ;-)
>>
>> At one time, I thought about putting a rig that ran sorta warm in my
>> freezer. 
>
> So you trade heat damage for water damage?
>
>
> Hmmmmm, I'd be thinking it's time for new computer that DoesCoolingRight(tm)
>
>

It was a hand me down.  Since everything in there is well below
freezing, it shouldn't get water damage.  Now when I take it out of the
freezer, that could get interesting and cause the issue you are raising
which is why I never did it either. 

Dale

:-)  :-) 

Re: [gentoo-user] Laptop Overheat

[Matti Nykyri]

> On Dec 17, 2014, at 12:56, Dale <rdalek1967@gmail.com> wrote:
> 
> Alan McKinnon wrote:
>>> On 17/12/2014 11:03, Dale wrote:
>>> Stefan G. Weichinger wrote:
>>>>> Am 17.12.2014 um 07:33 schrieb J. Roeleveld:
>>>>> 
>>>>> Try cleaning the vents.
>>>>> 
>>>>> Also, most couches have a tendency to compress when something like a laptop is 
>>>>> on it. Effectively blocking all airflow.
>>>>> 
>>>>> If the temperature goes to 99C when on top of a table, return the laptop to 
>>>>> the shop as it is clearly not working properly.
>>>> When I compile bigger packages on my small ThinkPad X220 I sometimes put
>>>> it into the fridge ;-)
>>>> 
>>>> This effectively cools it down rather quickly ... and I ssh in via wifi.
>>>> 
>>>> Not to be tried at home ;-)
>>> You don't have a fridge at home?  ROFL  Sorry, I couldn't pass that one
>>> up.  ;-)
>>> 
>>> At one time, I thought about putting a rig that ran sorta warm in my
>>> freezer.
>> 
>> So you trade heat damage for water damage?
>> 
>> 
>> Hmmmmm, I'd be thinking it's time for new computer that DoesCoolingRight(tm)
> 
> It was a hand me down.  Since everything in there is well below
> freezing, it shouldn't get water damage.  Now when I take it out of the
> freezer, that could get interesting and cause the issue you are raising
> which is why I never did it either. 

Because the temperature of the laptop in the freezer will always be above dew point it will never get wet. When you take it out though it's temperature will most likely be below dew point of the ambient air so water will condensate unless the access of water is blocked by a plastic bag for example.

-- 
-Matti

Re: [gentoo-user] Laptop Overheat

[Thanasis]

On 12/17/2014 02:46 PM, Matti Nykyri wrote:
> Because the temperature of the laptop in the freezer
> will always be above dew point it will never get wet.
> When you take it out though it's temperature will most likely be below dew point of the ambient air so water will condensate

Right. Which is why he should turn it off as soon as he takes it out, 
and let it warm up to room temperature, before he turns it back on.

Re: [gentoo-user] Laptop Overheat

[Dale]

Thanasis wrote:
> On 12/17/2014 02:46 PM, Matti Nykyri wrote:
>> Because the temperature of the laptop in the freezer
>> will always be above dew point it will never get wet.
>> When you take it out though it's temperature will most likely be
>> below dew point of the ambient air so water will condensate
>
> Right. Which is why he should turn it off as soon as he takes it out,
> and let it warm up to room temperature, before he turns it back on.
>
>
>

And I'd let it sit for a while just to be safe.  Turning something on
that still has condensation on/in it is a bad thing all the way around. 
I still remember one time MANY years ago when we got our first color
TV.  It was cold as heck too.  Well, we left it in the back seat of the
car while we was running around doing errands and the car never warmed
up between trips.  We were just bouncing around town.  When we finally
got home, my Dad brought the TV in and it took a little bit to unhook
and move the old TV out and put the new TV in.  By that time, it had
built up enough condensation somewhere in there that it sparked and a
few seconds later it really sparked.  Then the smoke got out.  We all
know what happens when the smoke got out.  Brand new TV was junk. 

If I had put that old thing in the freezer just to play around or
something, I'd cut it off before taking it out, take the side off and
let it warm up.  Once warmed up, put a little fan on it overnight or
something to be safe. 

I might add, my deep freezer runs between -10F and about 0F.  I doubt
any puter would warm up much unless it is using really small heat
sinks.  It would certainly be under cooled for a room temp environment. 

It was just a thought tho.  ;-)

Dale

:-)  :-) 

Re: [gentoo-user] Laptop Overheat

[Matti Nykyri]

> On Dec 17, 2014, at 8:37, "Stefan G. Weichinger" <lists@xunil.at> wrote:
> 
> When I compile bigger packages on my small ThinkPad X220 I sometimes put
> it into the fridge ;-)
> 
> This effectively cools it down rather quickly ... and I ssh in via wifi.
> 
> Not to be tried at home ;-)

This is hilarious ;D

-- 
-Matti

Re: [gentoo-user] Laptop Overheat

[Christian Kruse]

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Hi,

Stefan G. Weichinger writes:

> When I compile bigger packages on my small ThinkPad X220 I sometimes put
> it into the fridge ;-)
>
> This effectively cools it down rather quickly ... and I ssh in via wifi.

Haha, this whole thread reminded me of this XKCD:

<http://xkcd.com/1172/>

Regards,
-- 
Christian Kruse
http://ck.kennt-wayne.de/

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Re: [gentoo-user] Laptop Overheat

[Stefan G. Weichinger]

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;-)

Yes, nice.

To explain: I only let the thinkpad in there for maybe 10 minutes or so ... So the risk is minimized, I assume.


Am 17. Dezember 2014 18:44:37 MEZ, schrieb Christian Kruse <cjk@defunct.ch>:
>Hi,
>
>Stefan G. Weichinger writes:
>
>> When I compile bigger packages on my small ThinkPad X220 I sometimes
>put
>> it into the fridge ;-)
>>
>> This effectively cools it down rather quickly ... and I ssh in via
>wifi.
>
>Haha, this whole thread reminded me of this XKCD:
>
><http://xkcd.com/1172/>
>
>Regards,
>-- 
>Christian Kruse
>http://ck.kennt-wayne.de/

-- 
Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.

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Re: [gentoo-user] Laptop Overheat

[Randy Westlund]

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On Wed, Dec 17, 2014 at 07:37:24AM +0100, Stefan G. Weichinger wrote:
> When I compile bigger packages on my small ThinkPad X220 I sometimes put
> it into the fridge ;-)
> 
> This effectively cools it down rather quickly ... and I ssh in via wifi.
> 
> Not to be tried at home ;-)

Hahaha, I've actually considered this before but decided that I'd only
end up melting my ice cream...

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[gentoo-user] Re: Laptop Overheat

[Grant Edwards]

On 2014-12-16, Randy Westlund <rwestlun@gmail.com> wrote:

> When I'm compiling something large and close the lid of my laptop (lid
> close events disabled) or leave it on the couch where it can't get
> proper airflow, it tends to overheat and crash.

Don't do that. ;)

> If I leave it open and on a table, everything is fine.

[...]

> Any ideas about where I should look?

The CPU heatsink, the fan, and any filters through which air moves.

-- 
Grant Edwards               grant.b.edwards        Yow! How's the wife?
                                  at               Is she at home enjoying
                              gmail.com            capitalism?

[gentoo-user] Re: Laptop Overheat

[James]

Grant Edwards <grant.b.edwards <at> gmail.com> writes:


> > When I'm compiling something large and close the lid of my laptop (lid
> > close events disabled) or leave it on the couch where it can't get
> > proper airflow, it tends to overheat and crash.

> Don't do that. ;)

> > If I leave it open and on a table, everything is fine.

> > Any ideas about where I should look?

> The CPU heatsink, the fan, and any filters through which air moves.


You can alway open up a laptop's various covers and try to use compressed
air to blow out accumulated dust.

With older, hot running laptops, particularly when compiling significant
amounts of packages, I use to put 1/2 inch wedges under each side to lift
up the bottom of the laptop from the table surface. This increases air flow
to the various fans and heat sinks, thus increasing the cooling system
efficiency. Make sure it's always has a clean, cool airflow in the room you
use it in. Heat is the enemy of all electronics, particularly if you want
the electronics to have a relatively long life....

hth,
James

Re: [gentoo-user] Re: Laptop Overheat

[meino.cramer]

James <wireless@tampabay.rr.com> [14-12-17 16:48]:
> Grant Edwards <grant.b.edwards <at> gmail.com> writes:
> 
> 
> > > When I'm compiling something large and close the lid of my laptop (lid
> > > close events disabled) or leave it on the couch where it can't get
> > > proper airflow, it tends to overheat and crash.
> 
> > Don't do that. ;)
> 
> > > If I leave it open and on a table, everything is fine.
> 
> > > Any ideas about where I should look?
> 
> > The CPU heatsink, the fan, and any filters through which air moves.
> 
> 
> You can alway open up a laptop's various covers and try to use compressed
> air to blow out accumulated dust.
> 
> With older, hot running laptops, particularly when compiling significant
> amounts of packages, I use to put 1/2 inch wedges under each side to lift
> up the bottom of the laptop from the table surface. This increases air flow
> to the various fans and heat sinks, thus increasing the cooling system
> efficiency. Make sure it's always has a clean, cool airflow in the room you
> use it in. Heat is the enemy of all electronics, particularly if you want
> the electronics to have a relatively long life....
> 
> hth,
> James

Hi all,

...is the laptop /reporting/ the problem (for example...a "shutting
down...too high temperature!"-message is shown -- sorry I own none
of these things...I am only asking... ;) or do you /feel/ the heat
in form of hot air coming out of that beast?

In case of the first...may be the heat conductive material between 
the CPU/GPU/nortbridge/southbridge dried out and the cooling cannot
work anymore...

Only my two cents...

Best regards,
Meino