this HDMI/Sleep issue has been discussed and some resolution was offerred here;
We just purchased 35 VW266H monitors and are having the same problem on some of them. Only our problem is in VGA mode. When the monitors go to sleep, we can't wake them up unless we unplug the power cord.
I'm open for suggestions.
While I use my PC watching moives, the power LED lights sudden turn amber and there is no screen image. NO buttons will work any more, even the power button. I have to unplug the power cord for 5 seconds and plug in back to make it work again. This is the third times it happen. Anyone with this VW266H got the same problem?