[CentOS] CentOS 7 + Dell Latitude E6420 laptop = thermalshutdown

Wed Jun 17 01:40:39 UTC 2015
Jason Pyeron <jpyeron at pdinc.us>

> -----Original Message-----
> From: deoren
> Sent: Tuesday, June 16, 2015 9:26 PM
> 
> 
> On 6/15/2015 2:04 PM, Jim Perrin wrote:
> 
> > I use a dell e6420 as my daily laptop/workstation. It stays 
> docked and 
> > on 24/7 while at home, often running multiple vms or docker 
> containers.
> > I've not experienced what you have described. The laptop does get a 
> > little warm during certain video conference meetings, I do not have 
> > any thermal shutdown events. I would check for fan function 

The most common issue with E6 series laptops is dust/lint/hair in the fan
grill.

The bios fan control is based on an efficient extraction of heat, but a
small amount of lint will keep it heatsink warmer longer.

<snip/>
> I might try downgrading the BIOS version to see if that 
> helps. I don't know that I've tried doing that with Dell's 
> utility before, but I'll give it a shot.
> 
> I setup a short loop to append the output of /usr/bin/sensors 
> to a log file and then call 'sync' just after.
> 
> This is the last entry just before the system shut down:
> 
> > acpitz-virtual-0
> > Adapter: Virtual device
> > temp1:        +25.0°C  (crit = +107.0°C)
> > 
> > nouveau-pci-0100
> > Adapter: PCI adapter
> > temp1:            N/A  (high = +95.0°C, hyst =  +3.0°C)
> >                        (crit = +105.0°C, hyst =  +5.0°C)
> >                        (emerg = +135.0°C, hyst =  +5.0°C)
> > 
> > coretemp-isa-0000
> > Adapter: ISA adapter
> > Physical id 0:  +46.0°C  (high = +86.0°C, crit = +100.0°C)
> > Core 0:         +46.0°C  (high = +86.0°C, crit = +100.0°C)
> > Core 1:         +42.0°C  (high = +86.0°C, crit = +100.0°C)
> 
> and this is the first entry just before I logged in:
> 
> > acpitz-virtual-0
> > Adapter: Virtual device
> > temp1:        +25.0°C  (crit = +107.0°C)
> > 
> > nouveau-pci-0100
> > Adapter: PCI adapter
> > temp1:            N/A  (high = +95.0°C, hyst =  +3.0°C)
> >                        (crit = +105.0°C, hyst =  +5.0°C)
> >                        (emerg = +135.0°C, hyst =  +5.0°C)
> > 
> > coretemp-isa-0000
> > Adapter: ISA adapter
> > Physical id 0:  +40.0°C  (high = +86.0°C, crit = +100.0°C)
> > Core 0:         +40.0°C  (high = +86.0°C, crit = +100.0°C)
> > Core 1:         +39.0°C  (high = +86.0°C, crit = +100.0°C)
> 
> 
> Looks like the system is a bit warm, but not overly so? So 
> far I've not figured out how to check the fan speed. I'll 
> keep looking.

That is the tell tail sign, as it is not cool when under low to no load.

Force the fan to high (dell diagnostic CD or other program) should be strong
(moves an empty paper coffee cup) cold air blowing.

-Jason 

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