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My problem is similar to the following question: How can I prevent Windows from disabling Aero?

I did not have enough rep to post a comment, but my question is somewhat different anyways.

It is different because of my setup and when the problem occurs. I have 8 gb ram. I use an HD 6990 to run a 30 inch panel. I also have two side panels hooked into the intel hd 3000 available from my processor. The side panels are 1920x1080 and the main monitor is 2560x1600.

Whenever I use one of the side panels, Windows 7 "detects slow performance" and disables aero. This occurs under just about any usage... even web browsing using firefox if flash is playing on the screen. However it is incorrectly determining slow performance. Task manager typically reports 27-33% physical memory usage (over 5 gb still available) when this happens. I checked and the intel graphics manager reports that it is using 112 mb of memory. It also reports that it has up to 3736 MB available. I know that it shares system memory but there is over 5 gb unused.

Is there any way to disable this obnoxious "feature"? I like aero and I don't ever want it to turn off. Is it possible to tell aero which graphics card to check for performance metrics? I am not interested in the speed of my side panels... otherwise I would hook them up to my primary graphics card. But it seems like a bug with aero since the intel driver is reporting 3 gigs of unused graphics memory available.

Community
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user319862
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4 Answers4

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I'm guessing you almost always have a browser open, like a lot of folks I know. I've seen this problem in both Internet Explorer and Firefox when running a browser on a display attached to a secondary GPU. The fix for that is to disable hardware acceleration in the browser - it doesn't always play nicely with DWM for some reason. (I seriously doubt you'll see any performance hit as a result of this).

It's possible there are other things going on, but some idea of what's ALWAYS running would be helpful to pin it down.

Shinrai
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There's a problem with Displayport in combination with Aero. Try Windows Aero without the displayport (DVI > Displayport adapter should do the trick). That did work for me at least.

unihumi
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I only have a german windows so i can tell the german names and a translatio without knowing the exact englisch names.

rightclick at the desktop -> the last option "Anpassen" (customize/adapt)
This opens the control panel where you can chose between designs. If there is an aero design active then at the bottom windows states something about a disabled aero. If clicked it offers to look to solve the problem. After clicking and waiting a moment windows actually solves the problem (it said something about a disabled/halted window manager).

Btw I think that was the first time that windows integrated problem solving mechanisms really helped me.

vlad_tepesch
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Have you tried forcing Windows to have Aero enabled?

  1. Right-click Computer in the Start Menu > Properties
  2. Advanced System Settings on left
  3. Settings button in the Performance section (the one at the top)
  4. Choose Adjust for best appearance (You can also choose Custom and select the options you want in the list below. The Aero option is a combination of desktop composition, transparent glass and visual styles if I'm not wrong.)
  5. OK > OK.
ADTC
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