Welcome to the most active Linux Forum on the web.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 11-12-2011, 04:54 PM   #1
LQ Newbie
Registered: Jul 2011
Posts: 5

Rep: Reputation: Disabled
Why did my computer suddenly shut down?

Hi, I am relatively new to GNU/linux and using slackware and something very weird happened and I would really appreciate some help figuring out what it was. Thank very much.

My terminal suddenly printed something like "broadcast message from root" but I couldn't finish reading because my computer suddenly shutdown.

Here is the relevant parts of /var/log/messages

I changed all my passwords immediately in case someone had found it an "ssh" into my computer to shut it down, but I don't think this is actually what happened. On the other hand I do not know what did happen and I am a bit worried about it, as well as of course not wanting it to happen in future.

So any advice on how to track this down or thoughts on what it might be would be greatly appreciated. Thanks again..
Old 11-12-2011, 04:59 PM   #2
Registered: Oct 2011
Distribution: Slackware, Fedora
Posts: 158

Rep: Reputation: Disabled
Nov 12 21:29:09 darkstar logger: ACPI group thermal_zone / action THM is not defined
Usually that implies a high temperature, so my guess would be an overheat. As for the cause of it overheating, I know some fans aren't particularly linux-friendly, so it may be that the fan didn't turn on. If the fan was on, it may be a hardware issue.
Old 11-12-2011, 09:39 PM   #3
LQ Guru
Registered: Jan 2006
Location: Virginia, USA
Distribution: Slackware, Debian, Mageia, and whatever VMs I happen to be playing with
Posts: 14,185
Blog Entries: 24

Rep: Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846Reputation: 3846
Overheating is the most common cause of unexpected shutdowns.

Make sure all the vents are clear and remove any dust build-up from inside the computer. If it's a desktop, open up the case and carefully vacuum it out, making sure to touch nothing with the vacuum. As an alternative, you can blow it out with canned compressed air, but I prefer the vacuum; it removes the dust, instead of just moves it.

If it's a laptop, vacuum the vents and make sure it's not sitting on a soft surface which could block the vents on the bottom.

I vacuumed out my file server and made all the overheating messages go away.

Last edited by frankbell; 11-12-2011 at 09:41 PM.
Old 11-12-2011, 10:08 PM   #4
Registered: May 2007
Location: California
Distribution: Slackware/Ubuntu
Posts: 609

Rep: Reputation: 38
I have a dell inspiron 5150 and I had to install the application dellfand to set temperatures when the fan would go on and off.


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
Can't shut computer down raysr SUSE / openSUSE 2 08-20-2009 11:49 PM
Can't shut down my computer JasonC10203 Linux - Newbie 2 08-27-2008 09:19 AM
What would cause a computer to shut off? davidguygc Linux - Hardware 30 07-22-2007 01:05 AM
Can't shut down the computer emereck Linux - Newbie 6 04-22-2006 01:52 AM
HELP! -> Computer won't shut down! chocobanana Linux - Hardware 19 03-24-2005 10:15 AM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 10:04 AM.

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