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Windows 7: Display Dim not working :(

02 Apr 2010   #1

Windows 7
Display Dim not working :(

Hey Im new to the forums so I wasnt sure which category to put this under but Im having trouble getting my netbook to 'Dim' the screen. Ive done a fair bit of reading up but I still cant figure it out. I set my computer to Dim after 1 minute however after a minute the screen flickers once (very quickly, blink and it is missed). So I got a peice of software to work out what was going on called Pwrtest (its microsofts developer kit tool for display monitoring) this is what it showed

Timestamp Session Info
23:55:38 1 Screen Saver Timeout: 300 seconds
23:55:38 1 Blank Timeout: 900 seconds
23:55:38 1 Dim Timeout: 60 seconds
23:55:38 1 Dim Brightness: 30%
23:55:38 1 Normal Monitor Brightness: 100%
23:55:38 1 Idle Reset
23:56:03 1 Idle: 5 seconds
.....(increased by incriments of 5)
23:56:53 1 Idle: 55 seconds
23:56:58 console Physical Monitor Brightness Changed: 100% -> 30%
23:56:58 console Physical Monitor Brightness Changed: 30% -> 100%
23:56:58 1 Idle: 60 seconds
23:56:58 1 Physical Monitor State: On -> Dim
23:56:58 1 Physical Monitor State: Dim -> On
23:56:58 console Adaptive Dim Timeout: 0 -> 120 seconds
23:56:59 1 Dim Timeout: 60 -> 120 seconds
23:56:59 1 Idle Reset
23:57:04 1 Idle: 5 seconds

This sort of confirmed what I was seeing, it is instantly going from 100% to 30% and straight back to 100% and then it doubles the timeout so it takes twice as long.
I read that certain processes can prevent the monitor from dimming however these reffered to programs such as fullscreen presentations or when watching a film and I haven't been running anything like that during the tests. So I was wondering if anyone knew what else could cause this to happen or if you have had a similar problem

sorry if the question is too complex

My System SpecsSystem Spec

02 Apr 2010   #2

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE

Purely speculation on my part, but I would tend to think that some program or process is causing it to return to normal brightness. The only thing that I can think of is to do a clean boot and see if the problem remains. If not, start reenabling programs until the problem returns, and then you will know where the culprit is hidden.
My System SpecsSystem Spec
03 Apr 2010   #3

Windows 7

I tried a clean boot but it didnt solve the problem
Thankyou anyway
My System SpecsSystem Spec

03 May 2010   #4

Windows 7

I have a similar problem with my new HP TouchSmart 300 series PC. Even though I set the desired brightness level in the Power options, my display jumps back to 100% brightness after power-on, restart, waking up from sleep mode or returning from screensaver mode.

Any of these latter processes appear to negate the manual settings. I'm still trying to understand, whether it's a a Windows 7 issue, or a PC specific hardware/software issue. Any suggestions will be appreciated.
My System SpecsSystem Spec

 Display Dim not working :(

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