990FXA - UD3 Rev 4

[jorgecorazondeleon]

Last Answer:   
Dear jorge dan,

Please go to BIOS > [M.I.T.] > [PC Health Status] and disable [CPU Fan Speed Control] to see if the problem still remains or not. If the problem still persists, please provide us the product serial number and we will try to see how to assist.

Regards,
I:
I had it disabled (see fig).
El S/N:1343400178xx

[rinkol]

Last Answer:   
Dear jorge dan,

Please go to BIOS > [M.I.T.] > [PC Health Status] and disable [CPU Fan Speed Control] to see if the problem still remains or not. If the problem still persists, please provide us the product serial number and we will try to see how to assist.

Regards,
I:
I had it disabled (see fig).
El S/N:1343400178xx

I have exactly the same problem. On booting, I have no noticeable overheating issues in Windows 8.1 with the F3 bios, but after waking from standby, the fan runs at a noticeably slower speed (a few hundred RPM) that is insufficient to cool the FX-8320 cpu. Changes to the cpu fan settings in the bios appear to have little or no effect. Incidentally, I noticed that the temperature alarm settings in the bios did not appear to work under the operating system (if the computer shut down because of overheating, the audible alarm would only occur on rebooting until the CPU cooled as a result of the increased fan speed).

I also tried the Easytune program. It appears that this allow one to control the CPU fan speed settings after rebooting, but, like the bios fan settings, there is no apparent control over the fan speed after resuming from standby.

This is an annoying problem. If this were a general problem with the F3 bios, I would expect to see more reports of problems. i am left wondering if there is a defect in the motherboard that only shows up with the F3 bios.

I did manage to sort out the control of voltage and timing settings under the F3 bios (note that I am not overclocking the CPU).

Robert

[AgentFXA]

This problem goes back affecting rev 3 boards as well (exact same problem with latest bioses) - it's not just rev 4 boards and it's no a fan issue either!

Most likely the bios is the culprit and Gigabyte clueless to figure it out

[jorgecorazondeleon]

Last answer:


Dear jorge dan,

We appreciate your patient and understanding that this case needs further examination. It may take some time for the whole procedure but we will keep you post as soon as there is any update available.

If you need to check the current status of this case, you may visit GIGABYTE eSupport.

Regards,
GIGABYTE

(At least,
gigabyte admits the error exists)

[rinkol]

This problem goes back affecting rev 3 boards as well (exact same problem with latest bioses) - it's not just rev 4 boards and it's no a fan issue either!

Most likely the bios is the culprit and Gigabyte clueless to figure it out

I've done a bit of further investigation - I did find that, after waking from sleep, that I could use the Easytune software to modify the fan speed, but the fan speed was still greatly reduced from what would be observed after rebooting. The highest fan speed (100%) I could get after waking from sleep was about 1100 rpm with the stock AMD fan. This results in displayed temperatures in the mid 40 degree C range when my CPU is lightly loaded.  Even a small processing load results in higher temperatures with no further increase in fan speed.  There seems to be a bios bug that (a) causes the available power to the fan to be reduced and (b) reduces/eliminates the effect of temperature on the fan speed control after waking from the sleep state. I had previously noted that the settings in the bios for controlling the dependence of fan speed on temperature appeared to have no noticeable effect.

[AgentFXA]

Yes, the tiny stock fan is a little better but having an Evo212 here the fan speed is ~700 rpm after wakeup with the old beta bios and the new F3 results in zero rpm after sleep.

[jorgecorazondeleon]

I am Testing Bios F4A (beta tester)
So far, the problem seems solved

[jorgecorazondeleon]

Last answer of technical support (Taiwan) :
Update 06/17/2015

Sorry for late update. We tested the issue with latest BIOS version F4a. Before put system in sleep mode, the CPU temperature is around 30°C and CPU fan speed is around 2200rpm.
After resume from sleep mode, the CPU temperature is around 33°C and CPU fan speed is around 2200rpm, too. The system works properly without the CPU fan stop spinning issue.

[AgentFXA]

Last answer of technical support (Taiwan) :
Update 06/17/2015

Sorry for late update. We tested the issue with latest BIOS version F4a. ....

Fine, then I am still waiting for them to put it up on the bios download page for my mobo! Nothing there yet... and btw, I gotta 4.0 board

[jorgecorazondeleon]

I think it may take some time.
Gigabyte has request me the following:

"After bios updating, please do not forget to load BIOS optimized default setting and please also do not try to overclock your system at this moment".

[AgentFXA]

Thanks, Jorge,
I always do that and never overclock anything 

[AgentFXA]

Thanks for the bios, Jorge!
Indeed I can confirm it's fixing the wakeup issues for me - CPU fan starts and speeds up under load again!

http://pasteboard.co/1lS90zTt.jpg

muchas gracias, amigo! 

[jorgecorazondeleon]

 
Now,we waiting to publish F4
Here we say:
Today for you, tomorrow for me....

[reeven]

I understand the problem with cpu fan speed, i do not use stock cooler, i use Tuniq use stock cooler till you have money for new one.
I have Tuniq Tower120, old one, pay about 15 euros on it( brand new).
In prime95

[Ferather]

The issue is with the F3 release bios, the F2 edition does not have this fault.
I know because I recently updated to F3 to find my CPU @ 77c after sleep.

Gone back to F2, also since I can reach 240 FSB on my FX8350 and I cannot with F3.

Also gigabyte be prepared to replace some CPU's, Almost tempted to ask myself.