New MacBook connected to external VGA display screen flash.

Glad that I am not the only one have this problem 😟

Got the latest macbook aluminum yesterday and hook up to my Dell 24" monitor (2407WFP-HC, 1920x1200 resolution) through mini-displayport to VGA adapter. I also kept macbook lid closed and plugged in the USB keyboard/mouse; so that I can use the external monitor as the only screen. The monitor randomly goes black with a message saying "Entering power save" and then after a second comes back fine.

I am not sure but I feel it happens more when I open new windows, although there are times it happens while I was doing nothing than reading a web page. There is no problem with using the built-in display without external monitor.

Any help would be appreciated!

Message was edited by: duancg

When I try to use the displayport to VGA adapter my Samsung 40in LCD does not even recognize signal from my new MacBook.

Same problem here. My new macbook will not be recognized on my Samsung T240HD. It shows as if no PC is connected

😟

What is it ??? Are the adapters having problems ?

I installed bootcamp to try in windows XP and still no signal so it must be driver or dongle related. I ruled out the TV or cable as the problem. If it is both our dongles then either Samsung half implemented VGA support or the new display port to VGA is not working right.

Same here. 2.4g macbook. I have a powered vga splitter going to a 40" toshiba LCD and a samsung 22" monitor. At first I thought it was the screen going to sleep and tried to change the settings, but then realized it was happening randomly--just goes off and comes back on. Strangely, it has all now stopped. I mucked around with the resolution settings and maybe that is the difference. I now have it set at: 1360X768 60 hz and it seems to be fine. My guess is that it is early growing pains with the new port and adapters.

Same problem here, with a 22" Sceptre display. Seems to happen only if I am "doing something" on the computer, but not if I am just sitting watching something on the computer. Very intermittent, and annoying. Only lasts for a few seconds, and then it's back to normal.

same here with sporadically blanking display (Dell 2407 WFP at 1920x1200 at 60Hz). Has anyone using DVI or dual link DVI experienced the same problem?

So here's more info. Aparenty it is a power issue. Either Displayport, or the new NVIDIA does NOT have enough power ( or the adapter ) for the monitor.
I realized my new t240hd shows NOT enough power message, but if I check on the macbook, it already sees the monitor with no problem. I can even change the resolution even it is not displayed on the actual monitor.
Checked connecting my 42" plasma though VGA, works.
Checked my 17" monitor, works.

Not the new one with higher resolution.

Helllooooo, Apple ????

I wonder if a PRAM reset would help, or if users reset their monitors to default settings if that would help?

Same problem here.. At first I thought it might be my new Samsung 2032 but I feared it may be a problem with the new MacBook. I tested it on my old MacBook Pro and the screen was fine.

Anyone have an idea or solution for this problem? It certainly is very annoying due to the irregularity in when it occurs.

I get this problem when using VGA, but it doesn't happen when I use the DVI connection instead.

Not a PRAM issue.

I spent 1 hour on the phone with a VERY SAVVY customer guy, and after checking and rechecking the whole nine yards, nothing. He asked me to take my macbook to the Apple Store. I'm not really sure how that can help, but we did everything you can imagine to verify it is not a software issue.

So DVI seems not be having any problems. Bad luck I am working out of the country now, with no DVI adapter, but a brand new non working VGA one, great.