Is this a bug or feature?
If the fan is not a PWM controlled fan, then this happens after every wakeup from Standby. If the Fan is from the PWM typ, then it works OK..
This problem applies only to the front chassis conector. The rear chassis connector controls the none PWM fan perfect.
Is this only with my motherboard or have others this issue too?
I contacted INTEL Support, but they closed the issue without an anser. 
Nobody has a solution?
Is it only my motherboard haveing problems with the front fan connector?
Confirmed, I just complete a machine with the DH57DD last week, and upon wake from Sleep (S3) mode the front chassis fan runs at 2100 rpm. This is twice the speed it runs when you boot the machine from OFF mode.
I have the same problem. After S3 the Fan runs with 1000rpm instead of approximately 450rpm.
Meanwhile I updated the BIOS to Version 0601, but still the same. After power up from S3, the fan runs at full speed.
By the way, the fan-connector is called "intake" and is on the edge, close the the DDR3 sockets.
efroggy
Can you check your BIOS settings and let me know what they show? In BIOS under the Power tab, there is a seting "ACPI Suspend State". Does it show S1 State or S3 State, and does it make any difference if you change it?
Thanks
Chris
Chris,
If S1 is set in BIOS, the fan runs as it should be. But in S1 state all the fans keep running.
The BIOS power settings are as follows:
Enhanced Intel SpeedStep Tech Enable
CPU C State Enable
OS ACPI C2 Report Enable
System Power Options
After Power Failure Stay off
WOL from S5 Power On
ACPI Suspend State S3 State
S3 State Indicator Off
S1 State Indicator Blink
Wake System from S5 Disable
PCIe ASPM Support Enable
These are my settings. Do you need any more?
Please be aware, the mentioned problem only exists with none PWM fans and only if S3 is selected.
Unfortunately in my slim case only 70 mm fans can be fixed and there are no PWM models available.
regards
Siegfried
Thanks for the information, I will look into this after the Holiday and see if I can replicate it my lab, I will let you both know what I find out.
Thanks
Chris
efroggy,
I set this up in my lab today and am unable to replicate the results you are seeing with the fans set in S3. I am guessing when you say non-PWM fan, you are referring to a 3-pin fan header, if I am wrong here please let me know. In any event, I set it in S3 and the system goes to sleep, in fact, there is no power running to the rear fan header at all when in this state. This makes me curious about your particualar setup. Do you have some sort of fan board, or some other additional power run to the fan? It seems this would happen if you are running the fan off the power supply, but using the header for speed control.
Thanks
Chris
Dear Chris, please see my answers below in bold.
ChrisIntel schrieb:
efroggy,
I set this up in my lab today and am unable to replicate the results you are seeing with the fans set in S3. I am guessing when you say non-PWM fan, you are referring to a 3-pin fan header, if I am wrong here please let me know.
Yes, I mean the 3-pin fan header type.
In any event, I set it in S3 and the system goes to sleep, in fact, there is no power running to the rear fan header at all when in this state.
This is correct, in S3 state no power is applied to any of he fans.
This makes me curious about your particualar setup.
When the system resumes from S3 and only S3, than the mentioned fan (called "intake -, or front fan" header) runs at full power (full speed) all the time. The rear fan runs at normal (reduced) speed as well as the cpu fan.
Do you have some sort of fan board, or some other additional power run to the fan? It seems this would happen if you are running the fan off the power supply, but using the header for speed control.
No, there is no additional circuit or component used for any of the fans.
If I connect a PWM-fan (4-pin header) to the intake header, then everything is normal, the fan is regulated. The problem exists only with the 3-pin fan types (DC-regulated) and only on this particular connector. There are quite a number of users complaining about this.
For a work around I would use a PWM-fan, but there are no 70 mm versions available.
Thanks
Chris
Best regards and happy new year.
efroggy
efroggy,
Thanks for the details; I am now seeing the same behavior you are reporting. I am going to continue to investigate this issue, but I am also moving this thread into our sightings forum that is more closely monitored.
Please feel free to provide any more information that might be relevant in this forums. I will update the thread once I have additional information.
Thanks
Chris
Thank you Chris,
I will get an email as soon as you are posting here.
Looking forward to receive the results.
Best regrads
efroggy
All,
It appears that this issue is fixed in the latest BIOS (0625), which can be found here:
http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=19682&ProdId=3225&lang=eng
Please give it a shot and let me know if it works.
Thanks
Chris
FYI, the date on the BIOS is not actually the date it was posted, we just posted this BIOS at the end of last week..
Hi Chris,
I did test the BIOS 0625 already a few days ago.
The mentioned problem is not fixed in this version either.
sorry
best reagrds
efroggy
