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Message #01539
[Bug 370173] Re: laptop overheats and suddenly shuts down/off
Problem solved!!!!!!
I updated the BIOS to the latest version for my Laptop. Ubuntu and
another Lynix based OS works fine now.
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https://bugs.launchpad.net/bugs/370173
Title:
laptop overheats and suddenly shuts down/off
Status in Linux ACPI client:
New
Status in acpid:
New
Status in cpufreqd:
New
Status in The Linux Kernel:
Expired
Status in lm-sensors - Utilities to read temperature/voltage/fan sensors:
New
Status in “linux” package in Ubuntu:
Won't Fix
Status in “acpi” package in Debian:
New
Bug description:
Ubuntu 9.04, fresh install on Acer Aspire 5005 / Toshiba Satellite.
(confirmed also with 9.10 and 10.04)
Not sure about package, but it seems the problem is:
* with CPU frequency adjustment,
* fan control,
* thermal sensors,
* control of cooling itself.
Laptop shuts down right in the middle of CPU-greedy operation overheated. I haven't seen it before (since 7.10).
The issue is discussed at several forums (eg. http://ubuntuforums.org/showthread.php?p=7399158 )
*-cpu
product: AMD Turion(tm) 64 Mobile Technology ML-37
vendor: Advanced Micro Devices [AMD]
physical id: 1
bus info: cpu@0
version: 15.4.2
size: 2GHz
capacity: 2GHz
width: 64 bits
capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt x86-64 3dnowext 3dnow up pni lahf_lm cpufreq
also: AMD Turion Ultra 64 X2 RM-80 @ 2.1 GHz, AMD Turion 64 X2 TL-60,
Intel(R) Celeron(R) CPU 540 @ 1.86GHz
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Replication:
You can try:
# sudo apt-get install stress
# stress --cpu 16 --vm 2 --vm-bytes 128M
But it may be the graphics card (gpu), connected to the same heat sink
as the cpu, that causes the shutdown. And the gpu will only overheat
when cpu is not getting very stressed/hot and thus the fan is not
running fast enough to keep the gpu from overheating.
It may also be reproducable by installing the ubunu alternate CD into
virtualbox (without guest additions).
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Workarounds:
Hint 1: Make sure the heatsink/vent system is not dusty. (Do clean it with pressured air/vacuum at own risk.)
Hint 2: Using your laptop standing on its side or front edge (even if opened), i.e. when it is connected to external monitor etc., can change the heat flow and make parts like the gpu overheat which won't get so hot in normal orientation.
In some cases using some additional kernel modules (or other cpu
throttling packages) seem to work around the problem.
Comment #308 points out how with ati graphics cards supported by the
fglrx driver you can disable its acpi functions as a workaround. Bug
#488152 and Bug #570589 deal with the many ATI cards that overheat.
An example /etc/X11/xorg.conf to keep the gpu cooler in general is the
following:
Section "Screen"
Identifier "Configured Screen Device"
Device "Configured Video Device"
EndSection
Section "Device"
Identifier "Configured Video Device"
Option "ClockGating" "true"
Option "DynamicPM" "true"
Option "DynamicClocks" "on"
EndSection
Comment #327 points to the "server" edition which does not use acpi
and does not suffer from this bug.
Comment #328 hinted that adding the "acpi.power_nocheck=1" AND
"acpi_osi=linux" boot options can help, if your (updated) BIOS
supports it. (Making nocheck=1 the default was proposed
https://patchwork.kernel.org/patch/23156/ but it is not upstream as of
april 2010.)
---
If your fan does not start at all, but in emergency overheating
conditions, you may be seeing an (source code wise) unrelated
issue/bug, that can be worked around however by the same
acpi.power_nocheck=1 boot option as well, though. (Or by staying 10
seconds or so in the grub boot menu until the fan starts controlled by
the bios can help.)
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