LinuxQuestions.org
View the Most Wanted LQ Wiki articles.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware
User Name
Password
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

Notices



Reply
 
Search this Thread
Old 11-02-2005, 06:58 PM   #1
dukeinlondon
Member
 
Registered: May 2003
Location: London
Distribution: kubuntu 8.10
Posts: 593
Blog Entries: 1

Rep: Reputation: 30
excessive cpu temp ?


lm sensors report a cpu temperature of about 54-56 deg centigrade. I've seen it hedge toward 59deg. the cpu is a athlon XP 1900+ and I have read somewhere that its fatal temperature is around 90 deg.

Can the current temperature (or slightly higher) still cause the whole system to freeze (pun not intended) ? Yeah the whole thing sometimes just freezes, with no error message anywhere...

I am not looking forward to fitting a better heat sink (the current one was a nightmare) and an additional case fan but I'd do it if I thought it'd cure the problem.

The computer can run for days on end without a glitch and then suddenly lock up...

Running suse 10 with stock kernel but it was the same (slightly worse actually) with sid...
 
Old 11-02-2005, 07:36 PM   #2
Cards_STL
Member
 
Registered: Oct 2005
Location: Rural area near St.Louis, MO
Distribution: SuSE 10.0
Posts: 54

Rep: Reputation: 15
54-56 for an Athlon is quite normal. I have a sempron 3000+ that has inched its way above 60 before. If you truly have your heart set on a system freezing due to a Hardware problem, Then it might be a Hard drive overheating. Maybe you could invest in a temerature sensor or fan for it? I had the same problem on my old Mac, Harddrvie would overheat, then at the slightest movement of the PC itself it would lock up.

It might just be a software problem however, so research everything you can. Linux IS perfect, but sometimes evil Microsoft spy-midgets crawl into your PC and make it seem buggy or make it crash, so dont forget to set mouse traps!
 
Old 11-02-2005, 07:36 PM   #3
uberNUT69
Member
 
Registered: Jan 2005
Location: Tasmania
Distribution: Xen Debian Lenny/Sid
Posts: 578

Rep: Reputation: 30
The temperature you mention is quite high, taking into account that many motherboards have a low warning setting of 65 degrees C.
Don't forget too, that the temperature you're reading can lag behind the ACTUAL temperature of the CPU core because of the thermal inertia of the HSF. This effect can easily mask sudden increases in temperature, but the fact that the temperature is so high to begin with suggests you're pushing it's limits!

I suggest you
# apt-get install memtest86
reboot, and run memtest for a few (hot) days. (Yes, I said DAYS! )

Make sure you:
- have heatsink paste on your CPU HSF
- clean dust from all fans and surfaces
- tidy cables for better airflow

A properly designed case will keep cooler with
the panels on provided airflow is sufficient.

If you are unable to reduce the temperature significantly I suggest you replace your HSF and/or install an extra case fan.
 
Old 11-02-2005, 07:49 PM   #4
IamSpOOk
LQ Newbie
 
Registered: Jul 2005
Posts: 15

Rep: Reputation: 1
1) It is essential to have a great thermal connection between the CPU core
and the heatsink. Poor connection = CPU overheat and damage.
2) System lockups can also happen if your video card overheats. Make sure
the fan (if it has one) is working properly.
3) Ensure that you run with the case cover ON. It's required in order to baffle
the air flow correctly. Heat dissipation is reduced with the cover off.
 
Old 12-20-2005, 04:54 AM   #5
dukeinlondon
Member
 
Registered: May 2003
Location: London
Distribution: kubuntu 8.10
Posts: 593
Blog Entries: 1

Original Poster
Rep: Reputation: 30
I have changed the heatsink and that has resulted in a 10 deg celcius drop in temperature. The PC now can go on for a long time without freezes although it still does happen occasionaly.
 
Old 12-20-2005, 05:36 AM   #6
uberNUT69
Member
 
Registered: Jan 2005
Location: Tasmania
Distribution: Xen Debian Lenny/Sid
Posts: 578

Rep: Reputation: 30
Have you ever overclocked this machine?
What size is your power supply?
How many extra devices are you running? (disks, optical devices, etc)
Does the error still occur with any/all of these devices disconnected?
(perhaps test with memtest or cpuburn)

I still think, though, that your cpu temp is too high (esp. considering your climate).
Mind you, you may have damaged the cpu/chipset with excessive temps and
it may now be a little 'over sensitive'

I don't surpose you're putting too much heatsink paste on?
(It only needs to be a very thin smear)

It would also be interesting to know the other temps available.
eg. case and psu

Last edited by uberNUT69; 12-20-2005 at 05:37 AM.
 
Old 12-20-2005, 02:19 PM   #7
dukeinlondon
Member
 
Registered: May 2003
Location: London
Distribution: kubuntu 8.10
Posts: 593
Blog Entries: 1

Original Poster
Rep: Reputation: 30
No never overclocked. Do you think 46deg is still too high ? MOBO temp shows 26.

I don't think the freezes were only due to the temperature. In XP, the machine freezes reliably within a couple of hours so I think there might be some chipset defect somewhere.

Fortunately, linux now runs for much longer than that with no problem.
 
Old 12-20-2005, 06:10 PM   #8
IamSpOOk
LQ Newbie
 
Registered: Jul 2005
Posts: 15

Rep: Reputation: 1
Other connectors

Remove the covers. Remove the Power cord. Ground the case. Attach a wrist strap to your wrist and the case. This will ensure that you are at the same potential as the chassis. Then you can remove each plugged-in board, clean the edge connectors carefully with a soft eraser - including, and especially the memory. Re-insert each one and make sure the connections are good. Visually inspect for good air flow. Make sure that the PSU vents are not obstructed by ribbon cables. Clean dust off fans. Make sure all the fans spin freely and replace any that do not.

With the machine powered up and under load, obtain an accurate voltage meter and measure the +12, -12 and +5 volts and any others that you may have access to. Record these values and post the results. Do the same for when the machine is at the BIOS prompt.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to get the cpu temp? jon_k Linux - Software 1 10-26-2004 02:13 AM
cpu temp arturnoole163 Fedora 1 03-30-2004 01:36 PM
Cpu Temp. DavidTempler Linux - Software 3 10-16-2003 11:49 AM
cpu temp zaman Linux - Hardware 21 07-17-2003 11:21 AM
CPU Temp. moger Linux - Hardware 5 12-22-2002 08:25 PM


All times are GMT -5. The time now is 02:53 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration