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IDProjectCategoryView StatusLast Update
0002051SpeedFanOtherpublic2012-10-19 20:40
ReporterZief Assigned Toalfredo  
Status acknowledgedResolutionopen 
OS VersionWindows 7 
Product Version4.47 
Summary0002051: AMD GPU temp. sensor stops working after switching Windows user account.
DescriptionGPU temperature reading works very well, but breaks every time I switch to another user account in Windows (its enough just to go to the user selection screen).
Steps To Reproduce1. Log in to system account A, start Speedfan.
2. GPU temp. read OK.
3. Switch to another user account - no need to log in to account B, just go to user account selection screen.
4. Come back to account A.
5. GPU temp. sensor is now broken and is stuck at -999C.

Restating Speedfan fixes problem.
Additional InformationCatalyst 12.8
Win7 SP1
TagsNo tags attached.
Motherboard ModelASROCK P67 PRO3
Video Card ModelAMD HD5750


related to 0002120 acknowledgedalfredo Power saving mode messes up GPU temp sensors 



2012-10-19 20:40

reporter   ~0007099

Last edited: 2012-11-01 19:33

I've got the same problem after a few hours in "Monitor off" computer state. While I'm working with PC everything is fine. But later I see -999C in GPU temp. It's the only account in my system and there wasn't logon screen, sleep, hibernation or something.
Situation reproduced twice.
MSI 790GX-G65 Win7 x64 SP1. AMD HD7870.

P.S. Found out that it was "Interactive Services Detection" which is the root of the problem, so it's +1 to Zief. Interactive services detection requires user context switch.
P.P.S. Sorry, the above is true, but -999C after 12 hours in "Monitor off" state reproduced many times without Interactive Services Detection dialog.

Issue History

Date Modified Username Field Change
2012-10-03 14:09 Zief New Issue
2012-10-03 14:09 Zief Status new => assigned
2012-10-03 14:09 Zief Assigned To => alfredo
2012-10-13 13:23 alfredo Status assigned => acknowledged
2012-10-19 20:40 MaxusR Note Added: 0007099
2012-10-22 16:46 MaxusR Note Edited: 0007099
2012-11-01 19:32 MaxusR Note Edited: 0007099
2012-11-01 19:33 MaxusR Note Edited: 0007099
2013-05-27 16:49 alfredo Relationship added related to 0002120