Overheating

Asked by iraklis on 2013-04-10

I have a Toshiba L500-128 laptop with Ubuntu 12.04 64 bit OS , the only problem i have is the overheating of my cpu , with temperatures from 70 to 90 C . I think that this is related to the usage of the cpu fan . How can i fix it ?

Question information

Language:
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Status:
Solved
For:
Ubuntu acpi Edit question
Assignee:
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Solved by:
N1ck 7h0m4d4k15
Solved:
2013-04-10
Last query:
2013-04-10
Last reply:
2013-04-10
N1ck 7h0m4d4k15 (nicktux) said : #1

Hi iraklis ,

please open a terminal (CTRL+ALT+T) and issue the following commands (one by one)

    lspci -nnk | grep -iA2 vga
    lsb_release -rcd ; uname -r
    sensors

Post back here full results.

Regards
 NikTh

iraklis (kountouratzis) said : #2

VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI RV710 [Mobility Radeon HD 4500/5100 Series] [1002:9553]
 Subsystem: Toshiba America Info Systems Device [1179:ff80]
 Kernel driver in use: radeon

Description: Ubuntu 12.04.2 LTS
Release: 12.04
Codename: precise
3.5.0-27-generic

coretemp-isa-0000
Adapter: ISA adapter
Core 0: +82.0°C (high = +90.0°C, crit = +90.0°C)
Core 1: +83.0°C (high = +90.0°C, crit = +90.0°C)

iraklis (kountouratzis) said : #3

VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI
RV710 [Mobility Radeon HD 4500/5100 Series] [1002:9553]
 Subsystem: Toshiba America Info Systems Device [1179:ff80]
 Kernel driver in use: radeon

Description: Ubuntu 12.04.2 LTS
Release: 12.04
Codename: precise
3.5.0-27-generic

coretemp-isa-0000
Adapter: ISA adapter
Core 0: +82.0°C (high = +90.0°C, crit = +90.0°C)
Core 1: +83.0°C (high = +90.0°C, crit = +90.0°C)

2013/4/10 NikTh <email address hidden>

> Your question #226399 on acpi in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/acpi/+question/226399
>
> Status: Open => Needs information
>
> NikTh requested more information:
> Hi iraklis ,
>
> please open a terminal (CTRL+ALT+T) and issue the following commands
> (one by one)
>
> lspci -nnk | grep -iA2 vga
> lsb_release -rcd ; uname -r
> sensors
>
> Post back here full results.
>
> Regards
> NikTh
>
> --
> To answer this request for more information, you can either reply to
> this email or enter your reply at the following page:
> https://answers.launchpad.net/ubuntu/+source/acpi/+question/226399
>
> You received this question notification because you asked the question.
>

iraklis (kountouratzis) said : #4

the laptop becomes very hot during video playback from web (you tube e.t.c.)

Sounds like you need to use the legacy fglrx as you have one of the GPUs in the affected range. It is a known issue.
https://launchpad.net/~makson96/+archive/fglrx

Best N1ck 7h0m4d4k15 (nicktux) said : #6

Try the following commands (one by one)

    sudo -i
    echo low > /sys/class/drm/card0/device/power_profile
    exit

Wait for 10-15 secs and the check again the sensors

    sensors

If the temperature decreased , then we can do this command persistent by adding it to /etc/rc.local

   gksudo /etc/rc.local

 and BEFORE exit 0 add the command

    (sleep 15 ; echo low > /sys/class/drm/card0/device/power_profile) &

Then save the file and reboot and should be OK.

Regards
 NikTh

Or:

echo low | sudo tee /sys/class/drm/card0/device/power_profile

Bit simpler

iraklis (kountouratzis) said : #8

Thanks a lot Nick and Andrew ,
now my laptop is from 10 to 20 C cooler !!!!

N1ck 7h0m4d4k15 (nicktux) said : #9

Please mark the answer that solved your question by clicking on button "This solved my question". For future - help - others with same problem.

Regards
 NikTh

iraklis (kountouratzis) said : #10

Thanks NikTh, that solved my question.