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high temperature in AMD based laptop

asked 2013-11-16 16:12:52 -0500

rudrab gravatar image

updated 2014-04-11 16:28:35 -0500

remjg gravatar image

hi, one of my laptop have AMD RAEDON

$lspci|grep VGA
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7640G]

it continiously shows high temperature even when very little job is running. for example, the load :

top - 21:57:30 up  1:16,  2 users,  load average: 0.76, 0.89, 0.77
Tasks: 165 total,   1 running, 164 sleeping,   0 stopped,   0 zombie
%Cpu(s):  5.8 us,  4.5 sy,  0.0 ni, 88.7 id,  0.2 wa,  0.6 hi,  0.2 si,  0.0 st
KiB Mem:   7558420 total,  2099340 used,  5459080 free,    63428 buffers

yields temperature:

$ sensors
Adapter: Virtual device
temp1:        +74.0°C  (crit = +255.0°C)

Adapter: PCI adapter
temp1:        +70.0°C  

Adapter: PCI adapter
temp1:        +74.4°C  (high = +70.0°C)
                       (crit = +100.0°C, hyst = +99.0°C)

is there any wayout? in my main laptop with hybrid graphics (intel+nvidia), this problem was solved by bumblebee. what is the alternative for AMD?

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If you are using the default Radeon open source driver, maybe you are looking for enabling dynamic power management (look here or here). It's available from the linux 3.11 kernel but it will be enabled by default from the linux 3.13 kernel.

Does your laptop have hybrid graphics ?

remjg gravatar imageremjg ( 2013-11-17 05:35:30 -0500 )edit

no...its not hybrid, as lspci|grep VGA as posted above is showing

rudrab gravatar imagerudrab ( 2013-11-17 06:41:00 -0500 )edit

Have you tried using the proprietary driver AMD Catalyst? It's not free software, but it has power management enabled (but be careful each time you update key components like the kernel).

remjg gravatar imageremjg ( 2013-11-17 06:53:28 -0500 )edit

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answered 2013-11-18 02:14:43 -0500

jamesnz gravatar image

I recommend you try using the proprietary AMD drivers from rpmfusion, as remjg said. I had this exact same problem with my lappie and using the official drivers fixed.

Here are the instructions to install them:

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problem is, *catalyst is not available yet for f20:

rudrab gravatar imagerudrab ( 2013-11-18 10:36:25 -0500 )edit

Darn, you're right. Well that's a spanner in the works :P

jamesnz gravatar imagejamesnz ( 2013-11-18 12:21:55 -0500 )edit

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Asked: 2013-11-16 16:12:52 -0500

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Last updated: Nov 18 '13