Dell E5400 Fan Always on

I've got a new Dell E5400 with a Crucial SSD drive it. After using my laptop for about 2-3 minutes the fan kicks on high. Yet when I check the temps for the cpu and video card they are both pretty low. The fan stays on high for a good 10 minutes or so. Is their a known issue with fan speed and the E5400?

 

Are you running the latest version of the BIOS? Dell have made many changes to the thermal manage since the original release.

See whether this trick works for you (with thanks to whoever posted it in one of the other threads):

This may help you identify the cause of the fan activity. One of the indicator lights will flash on and off until you reboot to exit this mode.

John

 

Nice Hint

Also works on my M6400

Regards
Christopher

 

Great thanks for the tips I'll try this on the weekend thanks...

 

Very nice
Works on my vostro 1500 also.

Thanks,
Michael

 

Kind day
At me BIOS A04
Who can that updated the version of BIOS to new version A15
I do not hurry up it to do...
Whether me interests there was a table of temperatures of more tolerant?

Who would help - it is necessary to type on your version of an BIOS a combination for a special mode, then Fn+R, T and to photograph result. And if simply lay out. So it will be visually visible, whether new versions of insertions began to use less noise from the fan

Whether on version A15 the cooler right after inclusions works? And how many about time leaves at you in silence? It is a pity that it is not switched off...

Further from other users it would be desirable to see like the such

Your version of an insertion: A **
Your screenshot of the thermal table: ***

Here from me a screenshot:
A04

 

I have made updating firmware (A15)

The fan isn't switched off. At me loading and temperatures low, HDD temperature of 29 degrees. Only reboot helps. Or a way with a combination of keys Fn +... There I disconnect the fan

Management DELL!!!


Let out the updated version (A16)

an insertion with possibility of switching-off of work of the fan at fall of temperatures below certain level.

I offer such conditions for automatic deenergizing of the fan:

CPU = <50
HDD = <38

I would like to learn email managements DELL for request sending to update BIOS

 

A15: HDD = <28 fan switching-off
Home temp 18.5 (67.1) (its cold...)

 

I discovered something interesting,
Get into Fn+R using the trick described above, and turn off BIOS Thermal controls (make it on DISABLED)

Once you do this, I8KFanGUI temperature control works ! But it is unable to detect fan sensor chip, so it only lets you set the fan to Off, Slow or High (instead of accurate speed value).

Another side effect of this is that I8KFanGUI does not let you set fan speed according to HDD temperature.

This means that I8KFan driver just needs update to send signal to disable BIOS thermal control on E5500/E5400 and and Fn+R trick will no longer be needed.

Unfortunately i don't know how to reverse engineer the Dell SMBIOS :-(, maybe somebody needs to take memory snapshot before/after and find out which register to write to.

Hope that helps !

 

BIOS A15-16 real temp:
HDD temp = >32 fan switching-on
HDD temp = <28 fan switching-off

!!!!! managers DELL !!!!!

In this case the laptop E5400 would be silent and life of the cooler would have been more and more pleasant it would be to work in silence. Please do update the BIOS and make changes such as I suggested in the thermal table

HDD = >42 fan switching-on
HDD = <38 fan switching-off