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Windows 7: Ati HD 5850 not sleeping monitor


25 Jan 2010   #1

Windows 7 Ultimate 64-bit
 
 
Ati HD 5850 not sleeping monitor

Hi all,

I'm having some issue with my monitor deciding not to sleep. The system will sleep correctly, but as soon as it does, the monitor begins displaying "Check Signal Cable."

What's interesting is that the problem cropped up randomly, leading me to believe a Windows Update is responsible. I've been using the same copy of Windows 7 Ultimate 64-bit, the same HP w2408h monitor, and the same set of Logitech wireless mouse/keyboard, and it used to have no issues powering down the monitor when the computer shut off.

If the computer is running, the monitor sleeps correctly (using the 5 min timer through the Windows power management); it's only when the computer itself sleeps or turns off that the monitor refuses to power down.

I've already turned off hibernate using the powercfg command in the elevated command prompt: same issue.

Anyone have any suggestions or had a similiar problem?


My System SpecsSystem Spec
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25 Jan 2010   #2

Windows 7 Ulitimate Beta 32 Bit, Windows Vista 32 Bit, Ubuntu 9.10 32 Bit
 
 

hm.... have you tried a driver update for the card? and do you remember which update could have been the start of the problem?
My System SpecsSystem Spec
26 Jan 2010   #3

Windows 7 Ultimate 64-bit
 
 

I'm using the most recent Catalyst Drivers (9.12) and I don't recall which update could have done it...I have them set to automatic and I didn't really notice it as a problem until a few weeks ago.

What's so strange about it to me is that while the computer is on, the monitor sleeps perfectly. Then, the instant the fans/leds power down when the computer sleeps, the monitor turns back *on* and says "Check Signal Cable."

It's a boggle.
My System SpecsSystem Spec
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26 Jan 2010   #4

Windows 7 Ulitimate Beta 32 Bit, Windows Vista 32 Bit, Ubuntu 9.10 32 Bit
 
 

well..... actually that might not be a problem from windows because when your computer sleeps it no longer sends a signal to the monitor thus the check signal cable, it actually now sounds like everything is working as it should as long as it wakes up ok just tuen the monitor off when the computer sleeps
My System SpecsSystem Spec
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 Ati HD 5850 not sleeping monitor




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