Macbook with lion; external monitor won't wake

I have a 2008 unibody aluminum 2.0 ghz MacBook with an Acer s232HL 23" external monitor. Lately I've noticed that the external monitor won't come back to me after I put the computer to sleep. I'm using Lion and a Dynex MiniDisplay Port to DVI adapter. I never used to have this problem with Snow Leopard, but I got Lion right after it came out, and I could swear this problem didn't really start until a week or two ago.
I'm able to get the monitor back, but only after unplugging and replugging it in about 15 times.
Here's what happens:
I wake the computer up from sleep. The laptop monitor comes on. The light on the monitor turns from amber to blue, and it cycles through its ports–DVI, HDMI, and VGA–looking for a signal, before saying "no signal", and going back to sleep.
I unplug the monitor from my laptop.
My laptop screen briefly turns blue as it is reinitializing.
The Acer light goes from amber to blue again, and cycles through its display. If I leave it unplugged, it says "no cable attatched," or something.
I plug it back in.
Laptop monitor briefly goes blue.
Acer light goes back to blue and it cycles through its ports again before saying "no signal."
I repeat this a multitude of times, until the computer and monitor seem to randomly agree to speak to eachother.
Has anyone else experienced this and found a more acceptable solution than mine?
Thanks,
Sam

Hi Sworden79, I'm having exactly the same problems with my Macbook Pro 2011...
I didn't notice the problem at the begining, I think it start to happend with one of the Lion updates...
Is really anoying... to make it worst, some times when I restart the computer if the monitor is plug in the computer freeze... I have to disconect the monitor from the computer, then force restart long pressing the power button, wait till Lion load and then connect the monitor back... (experiencing this issue that you are describing then...)
I notice that it reduce the amount of cicles it takes to recognize the monitor if you have display preferences open when you connect the monitor to the mac...
This is SO annoying!

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