hp x2301 - No DVI Signal Monitor

My wife just bought the same monitor and is having the EXACT same issue.

I figured it was something I could easily fix by checking preferences, cables, etc.

Tried a couple different cables (DVI and HDMI) with the same problem.

I unplugged the monitor and re-plugged it into a different socket and then it came to life, looked fine (1300x768 pixel resolution I think worked).

But then the moment we put the computer to sleep the monitor and tried to wake everything up again the monitor went black again.

I'm assuming I could unplug it to reset it once again but that's crazy.

I've never seen such odd behavior with any external monitor on Mac and am quite confused.

And I've worked with PLENTY of monitors of all types on Mac and Windows.

I wish I knew what was up. I'm assuming a bum monitor for the time being since the Macbook Air is supposed to be able to drive some pretty heavy duty monitors.

She's got a mid-2011 Air with the latest Mountain Lion plus the HP x2301.

-Len

Just bought an HP x2301 and will be returning it tomorrow. Same issue only I only have one port to play with on the Mac book pro.

Not very good at all,

Shame on HP..

...

For what it's worth to those who experience the same issue, my wife eventually got it working reliably with the following workaround:

Plugin the monitor, let it go to sleep like it's not getting any input.

Then unplug the power connector at the base of the monitor and plug it back in.

When it comes back on it sees the mac and works fine until she sleeps the computer.

Weird, not good, but works.

I have a suspicion it has a bad power brick but I haven't been able to test that yet.

Also, I haven't tried it on my windows machine to see if it behaves better for some reason.

-Len

Thanks, this worked for me, too. I just unplugged the power from the bank of the monitor, without turning it off, plugged it back in again and it came right on. You are correct in that this is not the best workaround, but I am glad it works.