0002584: Speedfan 4.50b2 forgets advanced option of NCT6791D during suspend-resume

ID	Project	Category	View Status	Date Submitted	Last Update

0002584	SpeedFan	Fan control	public	2016-12-21 20:01	2016-12-21 20:01

Reporter	09876ggddzz	Assigned To	alfredo
Priority	normal	Severity	major	Reproducibility	always
Status	resolved	Resolution	fixed
Platform	Asus Z97I-Plus	OS	Windows 7	OS Version	64Bit
Product Version	4.50 beta
Fixed in Version	4.51 beta

Summary	0002584: Speedfan 4.50b2 forgets advanced option of NCT6791D during suspend-resume
Description	Speedfan 4.50b2 ist set to control the fans ("Advanced" -> NCT6791D -> PWM1 to PWM3 mode set to Manual (checked "remember it). "Fan Control" used to determine own profiles. Everything works well after cold boot. After a suspend-resume cycle the Asus UEFI fan control seems to take over. Checking "Advanced" -> NCT6791D tells for all "PWMx modes" tell me "DO NOT USE". Changing back to "Manual" does not work. A reboot fixes the situtation. Feel free to contact me for further information or debug files. I appreciate your outstanding work. For me Speedfan support is vital before I buy new mainboards.
Steps To Reproduce	Set "Advanced" -> NCT6791D -> PWM x mode to "Manual" (remember it) Make own profiles in "Fan Control" --> Works well Goto to suspend mode Wake computer --> Fan control via Speedfan is broken, Asus fan control kicked in Check "Advanced" -> NCT6791D --> PWM x mode is set to "DO NOT USE"
Tags	No tags attached.

Motherboard Model	Asus Z97I-Plus
Video Card Model	Asus Geforce 670 DC2

2014-10-03 11:20	Before Standby.PNG (43,095 bytes) Before Standby.PNG (43,095 bytes)

2014-10-03 11:20	After Resume.PNG (44,138 bytes) After Resume.PNG (44,138 bytes)

alfredo 2014-10-20 10:59 manager ~0008127	I think the BIOS, or some other tool, is aggressively resetting those registers. SpeedFan reapplies advanced settings after resume. Now I need to understand what is applying a further change after SpeedFan. Can you send me a SEND REPORT from SpeedFan's INFO tab after a resume from suspend? Thank you.

StefanJ. 2014-10-20 16:28 reporter ~0008128 Last edited: 2014-10-20 16:30	Report sent. I am with you with your assumption that the registers seems to be overwritten by -most certainly- bios. Bios fan control is in charge after resume - fans react to higher workload but speedfan control is not working. Manual exiting of speedfan and restarting speedfan leads to again working fan control by speedfan. I try to monitor bugtracking frequently to assist in short time.

zaluper 2014-12-16 20:21 reporter ~0008129	just add the speed fun reinitialization option on pc wake up/resume in the next build. and it would be cool to add custom fan profiles to an app!:) for now I added a task that restarts the speed fan on wake up and it solved the problem...

alfredo 2015-01-15 12:11 manager ~0008130	This issue has been fixed in the latest private beta.

Date Modified	Username	Field	Change
2016-12-21 20:01	09876ggddzz	New Issue
2016-12-21 20:01	09876ggddzz	Issue generated from: 0002310