Bug 913486

Summary: Samsung 900X3A gets extremely hot without any load
Product: [Fedora] Fedora Reporter: Holger Steinhaus <hsteinhaus>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 18CC: gansalmon, hsteinhaus, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-07-24 18:53:08 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
dmesg
none
lsmod
none
lspci
none
ps
none
lsusb none

Description Holger Steinhaus 2013-02-21 10:49:06 UTC 
User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.95 Safari/537.11
Build Identifier: 

Running FC18-x86_64 here on a Samsung 900X3A (i5-2537M, Sandybridge). The laptop runs as expected for hours or even days - very quiet and absolutely cool case.

Suddenly, mostly during web surfing, the fan is touring up and the case starts to get really hot. After some minutes, the CPU starts to throttle - the laptop becames unusably slow.

top does not show any processes generatring CPU load, powertop doesn't give any hint as well. Closing all running programs down to the empty Gnome desktop does not change the situation - the laptop continues to glow. 

A reboot fixes the problem.

Reproducible: Sometimes

Steps to Reproduce:
1.use the laptop for several hours
2.listen to the fan
3.


Expected Results:  
stable operation for days

I exepect the bug might result in hardware damage or even home fires due to the extreme heat generated (especially in unattended situations).
Comment 1 Holger Steinhaus 2013-02-22 12:31:16 UTC 
Created attachment 701146 [details]
dmesg
Comment 2 Holger Steinhaus 2013-02-22 12:31:50 UTC 
Created attachment 701147 [details]
lsmod
Comment 3 Holger Steinhaus 2013-02-22 12:32:31 UTC 
Created attachment 701148 [details]
lspci
Comment 4 Holger Steinhaus 2013-02-22 12:33:00 UTC 
Created attachment 701149 [details]
ps
Comment 5 Holger Steinhaus 2013-02-22 12:33:28 UTC 
Created attachment 701150 [details]
lsusb
Comment 6 Holger Steinhaus 2013-02-22 12:35:07 UTC 
Problem reoccured. I stripped down the system to single user mode - only systemd and shell plus some dozens of kernel threads were running. Load displayed by to: about 0. 

CPU Temperature rising fast, I rebooted at 80°C/176°F to prevent hardware damage.
Comment 7 Holger Steinhaus 2013-03-12 08:06:03 UTC 
Kernel 3.8.1 and kernel 3.8.2 changed the behavior a bit: now, a S3 suspend/resume is enough to stop the overheating. In contrast, 3.7.9 needs a full reboot for that.
Comment 8 Josh Boyer 2013-07-03 16:43:34 UTC 
Are you still seeing this with the 3.9 or newer kernels?
Comment 9 Josh Boyer 2013-07-24 18:53:08 UTC 
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.