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leiking
Tux's lil' helper
Joined: 16 Jun 2011
Posts: 76
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 Posted: Wed Mar 21, 2012 7:41 am Post subject: How can I cooler my laptop? IT IS TO HOT |
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My thermalzone is 50C . And when emerging. IT IS 70!
Any method? Thanks |
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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| Posted: Wed Mar 21, 2012 10:43 am Post subject: |
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50 C idle, 70C under load.... nothing too worry about. One of my laptop regularly goes over 95C. If you really want to make things cooler:
- emerge cpufrequtils or a similar package to control the CPU frequency
- emerge laptop-mode or similar software to reduce power consumption as much as possible
But remember, even when the CPU is idle, it will consume power and it will be warm. 50C is really not a surprising value. |
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bandreabis
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Joined: 18 Feb 2005
Posts: 2033
Location: Somewhere over the rainbow... bluebirds fly!
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| Posted: Wed Mar 21, 2012 10:58 am Post subject: |
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My Pavilion over load freezed al 80°C.
Now after cleaning and after changing thermal paste (by a technician) it goes up to 65°C maximum. 100€ and fear goes away!
It also depends on which CPU you have. |
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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| Posted: Thu Mar 22, 2012 2:43 am Post subject: |
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| Thermal design is one of the aspects which separates the "high quality" brands from the "not so high quality" brands. The thermal design of laptops is quite complicated. Most users will not use 100% load on the CPU for extended periods of time, and therefore, the cheap brands do not spend too much time considering fans, air flow, heat sinks, radiators, etc. If you use Gentoo, then you will have 100% CPU load for extended periods of time, and thus the temperature of all components will increase. In fact, Gentoo can be seen as a good stress test for the thermal design of a computer. |
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toralf
Advocate
Joined: 01 Feb 2004
Posts: 2411
Location: Hamburg/Germany
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| Posted: Thu Mar 22, 2012 10:28 am Post subject: |
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Simple activate cpu governor "ondemand" in the kernel. Ensure, that the module acpi_cpufreq is loaded.
That's almost all. You might check these things too : | Code: | /usr/sbin/ethtool -s eth0 wol d
/usr/sbin/hciconfig hci0 down
/sbin/iwconfig wlan0 power on
echo 3000 > /proc/sys/vm/dirty_writeback_centisecs
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keet
Guru
Joined: 09 Sep 2008
Posts: 331
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| Posted: Thu Mar 22, 2012 1:28 pm Post subject: |
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What kind of C.P.U. do you have, and what kind of laptop? What is your ambient temperature? On my laptops, temperatures in the 70s are common when C.P.U. usage is high for long periods of time, though both idle in the 30s and low 40s. You might be able to improve the problem by ordering some good thermal paste and applying it yourself, though generally disassembling and reassembling a laptop computer is not for the faint of heart or impatient.
Regarding external factors, have you considered using a cooling pad/mat while emerging? Also, what kind of surface is your computer on? It will probably be cooler on a hard surface than a soft one. Maybe you could move it to a cooler part of your house/apartment/cave/other dwelling type?
In general, though, if the temperature is in the 70s during high load, it's not abnormal for a laptop computer. 50 is a bit warm for an idle temperature, but it probably won't hurt anything. |
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keet
Guru
Joined: 09 Sep 2008
Posts: 331
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| Posted: Thu Mar 22, 2012 1:31 pm Post subject: |
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| WvR wrote: | | One of my laptop[s] regularly goes over 95C. |
That would worry me. From what I've read, most computers will initiate a thermal shutdown around 100C. My wife has a laptop that does exactly that, in fact, so I throttle the C.P.U. temperature to keep it below the maximum, and we keep it on a cooling pad. |
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i92guboj
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Joined: 30 Nov 2004
Posts: 9464
Location: Córdoba (Spain)
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| Posted: Thu Mar 22, 2012 1:33 pm Post subject: |
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If you are not afraid of getting physical, I suggest opening the case, cleaning it a bit, cleaning your heatsink carefully and shinning it with a soft paper or piece of cloth and alcohol. Then put new thermal silicon onto the cpu surface, put everything back and close the case again.
Depending on the concrete brand and model this is easier said than done, though. But the difference could really worth the trouble.
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 29996
Location: 56N 3W
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| Posted: Thu Mar 22, 2012 7:23 pm Post subject: |
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leiking,
Maximaise the surface area available for cooling during emerge.
Run it on edge with the air outlet uppermost. Thats a problem to type on of course.
Supporting the edges on two thick books works too, so the air is fee to circulate underneth the machine helps.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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Jaglover
Advocate
Joined: 29 May 2005
Posts: 3979
Location: Saint Amant, Acadiana
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| Posted: Thu Mar 22, 2012 9:09 pm Post subject: |
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Switching to ondemand governor will not help much, if demand is high the frequency will stay high. I personally do not like laptops (but of course I have one), I use powersave governor and distcc when keeping it up to date.
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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| Posted: Fri Mar 23, 2012 7:42 am Post subject: |
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| keet wrote: | | WvR wrote: | | One of my laptop[s] regularly goes over 95C. |
That would worry me. From what I've read, most computers will initiate a thermal shutdown around 100C. My wife has a laptop that does exactly that, in fact, so I throttle the C.P.U. temperature to keep it below the maximum, and we keep it on a cooling pad. |
This was a Lenovo Thinkpad X60 (12 inch). In the beginning it worried me a bit too, but since this was my work laptop, I decided to not bother - I don't have to pay the new one if I break the old one. This machine functioned perfectly for the time that I owned it (2 years and a bit), and the temperature went regularly up to 95C for extended periods (I used this machine also to test some of my Monte Carlo codes and other number crunching).
In my opinion, a thermal safety system is interesting, but a manufacturer should make a laptop such that you don't need a thermal safety system  . Give me one good reason that the user should install throttling software to avoid the machine shutting down by the thermal protection system. That is an unforgivable design flaw. The thing should be designed so that with an ambient temperature of 45C, 95% humidity and full load for hours the thing does not overheat. If the temperature gets too high, the CPU frequency should be reduced, but the design should be such that under no circumstances the temperature reaches a dangerous level. This is what separates serious manufacturers from toy makers. |
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6thgenA34
n00b
Joined: 05 Mar 2012
Posts: 22
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| Posted: Sun Mar 25, 2012 3:43 am Post subject: |
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| If you don't have time to open the laptop try some compress air and blow all the dust out. Make sure you do that once a month. Also if your laptop is on a desk or something similar you can get 4 bottle caps and stick two together with glue or a screw. Place them toward the back of the laptop so that it will be at an angle. Better air flow. I'm using a 6 year old Hp laptop and starting temp is 35C then at idle its 48C, at full load it goes up to 55C - 65C Nothing too high. |
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piedar
Tux's lil' helper
Joined: 09 Aug 2010
Posts: 80
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| Posted: Mon Mar 26, 2012 6:57 pm Post subject: |
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| WvR wrote: | | keet wrote: | | WvR wrote: | | One of my laptop[s] regularly goes over 95C. |
That would worry me. From what I've read, most computers will initiate a thermal shutdown around 100C. My wife has a laptop that does exactly that, in fact, so I throttle the C.P.U. temperature to keep it below the maximum, and we keep it on a cooling pad. |
This was a Lenovo Thinkpad X60 (12 inch). In the beginning it worried me a bit too, but since this was my work laptop, I decided to not bother - I don't have to pay the new one if I break the old one. This machine functioned perfectly for the time that I owned it (2 years and a bit), and the temperature went regularly up to 95C for extended periods (I used this machine also to test some of my Monte Carlo codes and other number crunching).
In my opinion, a thermal safety system is interesting, but a manufacturer should make a laptop such that you don't need a thermal safety system . Give me one good reason that the user should install throttling software to avoid the machine shutting down by the thermal protection system. That is an unforgivable design flaw. The thing should be designed so that with an ambient temperature of 45C, 95% humidity and full load for hours the thing does not overheat. If the temperature gets too high, the CPU frequency should be reduced, but the design should be such that under no circumstances the temperature reaches a dangerous level. This is what separates serious manufacturers from toy makers. |
Intel is way ahead of you - they've had automatic thermal control since P4 and Xeon (and I'm sure AMD does too). http://www.intel.com/cd/ids/developer/asmo-na/eng/downloads/54118.htm?page=2 |
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keet
Guru
Joined: 09 Sep 2008
Posts: 331
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| Posted: Wed Mar 28, 2012 1:48 am Post subject: |
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| WvR wrote: | | The thing should be designed so that with an ambient temperature of 45C, 95% humidity and full load for hours the thing does not overheat. |
That would be great, but it will not happen with cheap or even midrange laptops. A laptop computer like that would need good airflow, high-quality heatsinks, careful design, and a good thermal compound. It would also depend on the user to clear dust from it and put it on a surface that is conducive to airflow and heat transfer. For example, if I use my laptop computer on a wooden table, it idles at about 35C. On my couch, it idles at about 40C. On a good cooling mat, it might idle at 32C. At full load on a cooling mat, it stays around 70C, but if I put it on my couch, it would probably be around 83, even when the ambient temperature is 21C. This is a Toughbook with a dual-core processor that runs at 1.6Ghz.
On the other hand, my desktop computer, with quad-core i7/2600K, can run with about 100% CPU usage at 3.5Ghz for days on end (running Folding at Home) and stay between 45 and 50C, maybe reaching 53C if the weather is quite warm for this area. |
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leiking
Tux's lil' helper
Joined: 16 Jun 2011
Posts: 76
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| Posted: Thu Jul 12, 2012 5:08 am Post subject: |
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My laptop is SUMSUMG P330
I follow the hand book installed cpufreqd and laptop-mode. but
when emerging:
➜ ~ git:(master) ✗ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +91.0°C (crit = +103.0°C)
temp2: +91.0°C (crit = +103.0°C)
| Code: |
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 933 MHz - 2.40 GHz
available frequency steps: 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz, 1.07 GHz, 933 MHz
available cpufreq governors: conservative, ondemand, powersave, userspace, performance
current policy: frequency should be within 1.60 GHz and 1.60 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 10.0 us.
hardware limits: 933 MHz - 2.40 GHz
available frequency steps: 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz, 1.07 GHz, 933 MHz
available cpufreq governors: conservative, ondemand, powersave, userspace, performance
current policy: frequency should be within 1.60 GHz and 1.60 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
analyzing CPU 2:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 2
maximum transition latency: 10.0 us.
hardware limits: 933 MHz - 2.40 GHz
available frequency steps: 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz, 1.07 GHz, 933 MHz
available cpufreq governors: conservative, ondemand, powersave, userspace, performance
current policy: frequency should be within 1.60 GHz and 1.60 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
analyzing CPU 3:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 3
maximum transition latency: 10.0 us.
hardware limits: 933 MHz - 2.40 GHz
available frequency steps: 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz, 1.07 GHz, 933 MHz
available cpufreq governors: conservative, ondemand, powersave, userspace, performance
current policy: frequency should be within 1.60 GHz and 1.60 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
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when emerging with cpufreq & laptop-mode.
the cpu freq is low but the temp is high. the memory usage is high ..... nealy 100%..
Bugs?
when Idle .the temp is 70c..
I need help.
OR MY LAPTOP WILL CRASHED!!!!!!
HELP<HELP<HELP!!
| Code: |
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 0.0%)
polling 0.1ms ( 0.0%)
C1 mwait 0.8ms ( 2.6%)
C2 mwait 6.9ms (99.0%)
Wakeups-from-idle per second : 177.4 interval: 5.0s
no ACPI power usage estimate available
Top causes for wakeups:
42.4% (275.8) [Rescheduling interrupts] <kernel IPI>
20.1% (130.6) chrome
9.9% ( 64.4) swapper/0
7.4% ( 47.8) swapper/3
7.1% ( 46.4) swapper/2
3.8% ( 24.8) swapper/1
2.5% ( 16.4) [acpi] <interrupt>
1.6% ( 10.4) [ath9k, ehci_hcd:usb1] <interrupt>
1.3% ( 8.2) [ahci] <interrupt>
0.6% ( 4.2) USB device 1-1.2 : USB Optical Mouse ()
0.5% ( 3.4) [TLB shootdowns] <kernel IPI>
0.5% ( 3.0) SignalSender
0.4% ( 2.4) terminator
0.4% ( 2.4) awesome
0.3% ( 2.0) python2.7
0.3% ( 2.0) kworker/u:2
0.3% ( 1.8) cpufreqd
0.2% ( 1.0) [i915] <interrupt>
0.1% ( 0.8) X
0.1% ( 0.8) Watchdog
0.1% ( 0.6) Chrome_IOThread
0.0% ( 0.2) [eth0] <interrupt>
0.0% ( 0.2) Chrome_SyncThre
0.0% ( 0.2) init
0.0% ( 0.2) Chrome_FileThre
Suggestion: Enable the CONFIG_USB_SUSPEND kernel configuration option.
This option will automatically disable UHCI USB when not in use, and may
save approximately 1 Watt of power.
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ultraslinky
Tux's lil' helper
Joined: 09 Jun 2011
Posts: 80
Location: Milan, Italy
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| Posted: Thu Jul 12, 2012 5:34 am Post subject: |
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I doubt that a laptop can idle at 70 degrees normally... Do you have a cat/dog? If so, you must check for cat/dog hair stuck in the fan, nearly everyone i know who has a cat and a laptop has that problem and they have to open it up every couple of months.
And don't worry, any Intel CPU after the Pentium 3 has thermal safety features inside it, theoretically it should downclock without even shutting down. So your laptop is safe in any case! |
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DaggyStyle
Advocate
Joined: 22 Mar 2006
Posts: 4735
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| Posted: Thu Jul 12, 2012 5:56 am Post subject: |
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open it, clean the cpu fan, reapply cpu thermal paste and if needed, get a notebook cooler.
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Only two things are infinite, the universe and human stupidity and I'm not sure about the former - Albert Einstein
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The Doctor
l33t
Joined: 27 Jul 2010
Posts: 947
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| Posted: Thu Jul 12, 2012 6:02 am Post subject: |
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On the same vain as what NeddySeagoon recommended, I would also encourage you to consider purchasing an external fan. They run from about $5-$30 on Amazon. In my opinion its worth having, particularly if you are in the habit of stressing your system (and you are or you would not be reading this).
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leiking
Tux's lil' helper
Joined: 16 Jun 2011
Posts: 76
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| Posted: Thu Jul 12, 2012 7:08 am Post subject: |
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| penguin swordmaster wrote: | | On the same vain as what NeddySeagoon recommended, I would also encourage you to consider purchasing an external fan. They run from about $5-$30 on Amazon. In my opinion its worth having, particularly if you are in the habit of stressing your system (and you are or you would not be reading this). |
Can you suggest one ?
After my half day working. the temp is now 60c. The temp from lm-sensor seems lower from not using lm-sensor.
I use cpufreqd lowerd my freq to 1g. ( the offical artical seems not work) |
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disi
Veteran
Joined: 28 Nov 2003
Posts: 1351
Location: Out There ...
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| Posted: Thu Jul 12, 2012 8:49 am Post subject: |
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| leiking wrote: | | penguin swordmaster wrote: | | On the same vain as what NeddySeagoon recommended, I would also encourage you to consider purchasing an external fan. They run from about $5-$30 on Amazon. In my opinion its worth having, particularly if you are in the habit of stressing your system (and you are or you would not be reading this). |
Can you suggest one ?
After my half day working. the temp is now 60c. The temp from lm-sensor seems lower from not using lm-sensor.
I use cpufreqd lowerd my freq to 1g. ( the offical artical seems not work) |
I had my CPU freak out (without much reason) on 3.x kernels if:
1. Scheduler is not CFQ (otherwise the SSD will freeze the system for ~1-2 seconds on large jobs)
2. not 'tickless system' (this is default anyway, I think)
3. the timer frequency is more than 250Hz (I have a quadcore with HT anyway, so this gives with 150Hzx8 = 1200Hz?)
My dangerous temp is 95C (~125C for the GPU, which runs idle at ~70C) I think and it runs at ~50C if idle.
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