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IDProjectCategoryView StatusLast Update
0000711SpeedFanHardware supportpublic2008-08-20 18:25
ReporterNuor Assigned Toalfredo  
Status closedResolutionduplicate 
Platformdfi Lanparty nf4 UT drOSWinXPOS VersionSP2
Product Version4.31 
Summary0000711: Nvidia 7800GTX sensor chip disappeared
DescriptionSpeedfan 4.31 was detecting the sensor chip and giving reading for temp, voltage and fan speed up until yesterday. After updating motherbord driver to Nforce 6.86 (from 6.85) the detection and readings from the chip disappeared. Both Everest and RivaTuner 16.2 both read the chip fine only speedfan lost this ability.
Additional InformationConcurrent with this Motherboard Monitor started hanging at 50% cpu usage on start with anything other than a minimal INI file. There was a recent Video driver Upgrade to version 9371-whql but the sensor detection appeared to work after that upgrade.
TagsNo tags attached.
Motherboard Model
Video Card ModelEVGA 7800GTX 256


duplicate of 0000517 resolvedalfredo I Wanted To Know Does SpeedFan Supports Video Cards Of nVidia Hardware. 


2006-12-08 05:07


debug.nfo (29,313 bytes)


2006-12-08 09:25

reporter   ~0002223

Last edited: 2006-12-08 20:40

Follow up: It appears to be related to running a television as a secondary monitor. When the secondary monitor is activated and there is a reboot the sensor disappears when it's deactivated and another reboot the sensor reappears. The MBM usage was unrelated

2006-12-08 20:45


sensor_active_debug.nfo (63,218 bytes)


2006-12-12 19:32

reporter   ~0002226

Last edited: 2006-12-12 20:02

A possible related issue that I am testing. I get screen corruption forcing a complete restart of the system to restore picture when I am using the video overlay feature of my video card. I'm using nvidia driver ver. 93.71. The problem is intermittent and seems to occur when I open an overlay window and attempt to open a second window application. The system does not crash, I just lose or have corruption of video signal. I have not been able to duplicate the problem with Speedfan disabled suggesting that Speenfan is somehow corrupting the registers used by the video drivers. This is a MAJOR issue, if in fact Speedfan is the problem, and I've been forced to disable speedfan until I can confirm whether or not it is causing the problem.

edit: nevermind, it took a while but I managed to repeat this error even without Speedfan running


2006-12-16 17:37

reporter   ~0002234

Last edited: 2006-12-16 17:38

seems to be the same like bug id 505

Issue History

Date Modified Username Field Change
2006-12-08 05:07 Nuor New Issue
2006-12-08 05:07 Nuor File Added: debug.nfo
2006-12-08 05:07 Nuor Video Card Model => EVGA 7800GTX 256
2006-12-08 09:25 Nuor Note Added: 0002223
2006-12-08 20:40 Nuor Note Edited: 0002223
2006-12-08 20:45 Nuor File Added: sensor_active_debug.nfo
2006-12-12 19:32 Nuor Note Added: 0002226
2006-12-12 19:34 Nuor Note Edited: 0002226
2006-12-12 20:02 Nuor Note Edited: 0002226
2006-12-16 17:37 neothemachine Note Added: 0002234
2006-12-16 17:37 neothemachine Note Edited: 0002234
2006-12-16 17:38 neothemachine Note Edited: 0002234
2008-08-20 18:25 alfredo Relationship added duplicate of 0000517
2008-08-20 18:25 alfredo Status assigned => closed
2008-08-20 18:25 alfredo Resolution open => duplicate