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IDProjectCategoryView StatusLast Update
0001104SpeedFanFan controlpublic2008-08-21 01:37
Reporterjbthuis Assigned Toalfredo  
PrioritynormalSeveritymajorReproducibilityalways
Status acknowledgedResolutionopen 
PlatformAsus P5B-PlusOSVista 64OS VersionBusiness
Product Version4.33 
Summary0001104: CPU temp switches from Celsius toFahrenheit
DescriptionSpeedfan appears to cause incorrect values to be read for temperature and voltages. For example, with speedfan running, my CPU temp value will suddenly jump, typically from about 38-42 to about 100-106. I know that my CPU has not suddenly gotten that hot! The change is sudden and the only way I can get it back to "normal" is to reset my computer. This happens consistently in as quickly as a few hours after starting speedfan, to as long as about 30 hours. But if it always eventually happens. The problem does not appear to be that speedfan is reading the "wrong" value. I know this because Asus PC ProbeII shows the exact same values. Because speedfan thinks that the temp has gone way up, it kicks the fan to 100% (and my PC Probe II program is giving me all kinds of over temp warnings!) If the temp jump was always from about 38 to about 100, I could believe that speedfan was somehow causing the temperature, (38 C) to be read as a Fahrenheit value. (38C is 100F). But as the log below shows, it sometimes jumps to other temperatures which do not seem to correlate to this conversion...

Up until the time that the temp value changes, speedfan does a great job of controlling the fan rpm's. However, the incorrect temp values cause the fan to go on 100%, which defeats the purpose of the program.
Steps To Reproducerestart computer. Start speedfan. Let it run. I typically also run PC ProbeII, but it happens even if PC Probe II is not running. In as little as 3 hours, and as long as 30 hours, the temp suddenly jumps (most often to about 100+ degrees centigrade), where the moment before it read 38 or 39 degrees centigrade. I tested this over several days. If speedfan is not running, this problem never happens, even if PC ProbeII is running. In the "additional information" below I am including a commented log from PC Probe II. The log shows several temp jumps, as well as times where the voltage values seem to jump around. The voltages, however, seems to be "glitches" and are not persistent, like the temperature values are.
Additional Information===================================================
ASUS PC Probe II

Alert Log Report

Number = 20
===================================================

****
**** my notes added to the PC Probe II log
****


**** 3/11/2008 about 10am - Computer is running normally, CPU now temp approx 39 centigrade. I started the speedfan 4.33 program.


[03/11/2008 at 04:48 pm] CPU Temperature Abnormal, 100 degrees centigrade

**** 3/11/2008 about 5pm - I reset the computer. CPU temp now approx 38 centigrade. I also restarted the speedfan program.


[03/11/2008 at 08:01 pm] CPU Temperature Abnormal, 104 degrees centigrade

**** 3/11/2008 about 9pm - I reset the computer. CPU temp now approx 35 centigrade. I also restarted the speedfan program.


[03/13/2008 at 06:44 am] Vcore Voltage Abnormal, 0.02 V
[03/13/2008 at 06:44 am] Vcore Voltage become normal, 1.21 V
[03/13/2008 at 02:03 pm] +3.3 Voltage Abnormal, 3.65 V
[03/13/2008 at 02:03 pm] +3.3 Voltage become normal, 3.30 V
[03/14/2008 at 10:55 am] +5 Voltage Abnormal, 0.61 V
[03/14/2008 at 10:55 am] +5 Voltage become normal, 4.99 V

**** I ignored these voltage values. They seemed to be random invalid readings...


[03/14/2008 at 02:18 pm] CPU Temperature Abnormal, 78 degrees centigrade

**** 3/14/2008 about 2:30pm - I reset the computer. CPU temp now approx 37 centigrade. I also restarted the speedfan program.

[03/14/2008 at 03:43 pm] Vcore Voltage Abnormal, 0.04 V
[03/14/2008 at 03:43 pm] Vcore Voltage become normal, 1.19 V
[03/14/2008 at 05:29 pm] +5 Voltage Abnormal, 0.00 V
[03/14/2008 at 05:29 pm] +5 Voltage become normal, 4.99 V
[03/14/2008 at 10:31 pm] +3.3 Voltage Abnormal, 0.00 V
[03/14/2008 at 10:31 pm] +3.3 Voltage become normal, 3.30 V
[03/15/2008 at 12:55 am] CPU Temperature Abnormal, 78 degrees centigrade
[03/15/2008 at 09:33 am] CPU Temperature Abnormal, 75 degrees centigrade

**** 3/15/2008 about 9:35 am - I reset the computer and stopped running SpeedFan

**** 3/15 thru 3/17 *** no errors! ***

**** 03/17/2008 about 8:00 am - I restarted Speedfan

[03/17/2008 at 10:22 am] CPU Temperature Abnormal, 102 degrees centigrade
[03/17/2008 at 10:22 am] CPU Temperature Abnormal, 102 degrees centigrade

**** 3/17/2008 about 10:30 am - I reset the computer and stopped running SpeedFan
TagsNo tags attached.
Motherboard Model
Video Card ModelEVGA (Nvidea design) 8800 GTS Superclocked

Activities

jbthuis

2008-04-29 05:54

reporter   ~0003414

I need some help on this. The problem is still here... Speedfan will typically run about 3 hours and then start giving me errors. As shown in the log file below, it seems to get erroneous measurements for both voltages and for the temperature. However, the invalid temperature "sticks", until I reset the computer. The voltages act like glitches, and immediately become valid again.

I'd love to hear some suggestions, and have a fix for this!

thanks!
John

===================================================
ASUS PC Probe II

Alert Log Report

Number = 12
===================================================

04/28/2008 at 9:00am - I started both Speedfan and Asus PC ProbeII which
generated this log file.

[04/28/2008 at 11:58 am] +3.3 Voltage Abnormal, 0.00 V
[04/28/2008 at 11:58 am] +3.3 Voltage become normal, 3.30 V
[04/28/2008 at 12:42 pm] Vcore Voltage Abnormal, 0.19 V
[04/28/2008 at 12:42 pm] Vcore Voltage become normal, 1.17 V
[04/28/2008 at 01:20 pm] CPU Temperature Abnormal, 107 degrees centigrade
[04/28/2008 at 03:27 pm] Vcore Voltage Abnormal, 0.00 V
[04/28/2008 at 03:27 pm] Vcore Voltage become normal, 1.17 V
[04/28/2008 at 05:28 pm] Vcore Voltage Abnormal, 1.84 V
[04/28/2008 at 05:28 pm] Vcore Voltage become normal, 1.23 V
[04/28/2008 at 05:54 pm] +5 Voltage Abnormal, 3.71 V
[04/28/2008 at 05:54 pm] +5 Voltage become normal, 4.99 V
[04/28/2008 at 05:54 pm] +5 Voltage become normal, 4.99 V

jbthuis

2008-04-29 07:49

reporter   ~0003415

Amazing! I've run this program for weeks, and coincidentally just this evening added a note on this issue. And just now at 10:29 pm it did something I have not seen it do before... The temperature just switched back from 107 degrees to the correct temperature! Here's the log file - compare it with the log in the previous above. (see 1:20 pm and 10:29 pm) It is intriguing!

===================================================
ASUS PC Probe II

Alert Log Report

Number = 15
===================================================

04/28/2008 at 9:00am - I started both Speedfan and Asus PC ProbeII which
generated this log file.

[04/28/2008 at 11:58 am] +3.3 Voltage Abnormal, 0.00 V
[04/28/2008 at 11:58 am] +3.3 Voltage become normal, 3.30 V
[04/28/2008 at 12:42 pm] Vcore Voltage Abnormal, 0.19 V
[04/28/2008 at 12:42 pm] Vcore Voltage become normal, 1.17 V
[04/28/2008 at 01:20 pm] CPU Temperature Abnormal, 107 degrees centigrade
[04/28/2008 at 03:27 pm] Vcore Voltage Abnormal, 0.00 V
[04/28/2008 at 03:27 pm] Vcore Voltage become normal, 1.17 V
[04/28/2008 at 05:28 pm] Vcore Voltage Abnormal, 1.84 V
[04/28/2008 at 05:28 pm] Vcore Voltage become normal, 1.23 V
[04/28/2008 at 05:54 pm] +5 Voltage Abnormal, 3.71 V
[04/28/2008 at 05:54 pm] +5 Voltage become normal, 4.99 V
[04/28/2008 at 09:15 pm] +3.3 Voltage Abnormal, 0.00 V
[04/28/2008 at 09:15 pm] +3.3 Voltage become normal, 3.30 V
[04/28/2008 at 10:29 pm] CPU Temperature become normal, 41 degrees centigrade
[04/28/2008 at 10:29 pm] CPU Temperature become normal, 41 degrees centigrade

alfredo

2008-05-01 00:22

manager   ~0003420

SpeedFan and Asus Probe access the same resources. A collision is likely to happen. I would stop using one of them. You choose :-)

jbthuis

2008-05-01 08:02

reporter   ~0003422

Last edited: 2008-05-02 01:39

I am sorry if I gave the impression that this only happens if I have both programs running. It happens consistently even if I do not have the ASUS Probe software running. I included the ASUS Probe II logs because they are very easy to read.

Tonight, for example, with Probe II closed about 2 hours ago, the temperature just jumped from 41 degrees to 105 degrees. And this happened without the Asus sw running at all. (only SpeedFan was running) So it is not related to a collision between the programs.

Oh, and the temperature has never jumped around when only the ASUS Probe II sw is running. It only, and always, happens when SpeedFan is running.

Suggestions???

jbthuis

2008-05-28 06:42

reporter   ~0003676

Resolved!

I kept working at figuring this out and discovered the problem. SpeedFan was having conflicts with the aacenter.exe process. aacenter.exe is part of an ASUS program called "Ai Suite". I had experimented with this program long before trying SpeedFan. I had not started the AI Suite in about a year, and believed that it was not running anymore. However, I found that this process was running in the task manager and disabled it. Since then (about a week now) SpeedFan has run without problems. :-)

John

Hofman

2008-08-21 01:37

reporter   ~0004040

i think this should be closed

Issue History

Date Modified Username Field Change
2008-03-27 22:44 jbthuis New Issue
2008-03-27 22:44 jbthuis Status new => assigned
2008-03-27 22:44 jbthuis Assigned To => alfredo
2008-03-27 22:44 jbthuis Video Card Model => EVGA (Nvidea design) 8800 GTS Superclocked
2008-04-29 05:54 jbthuis Note Added: 0003414
2008-04-29 07:49 jbthuis Note Added: 0003415
2008-05-01 00:22 alfredo Note Added: 0003420
2008-05-01 00:22 alfredo Status assigned => acknowledged
2008-05-01 08:02 jbthuis Note Added: 0003422
2008-05-02 01:39 jbthuis Note Edited: 0003422
2008-05-28 06:42 jbthuis Note Added: 0003676
2008-08-21 01:37 Hofman Note Added: 0004040