Ok, time to talk quirks. I have 12 of these LG monitors. If you run the monitor off of HDMI straight to HDMI, when your computer goes into power save mode for the monitor (I have mine set to 5 minutes when not trading), the display says "No signal detected". Then it turns COMPLETELY off... like wait a minute, what'd it do that for. Then when you move the mouse to wake it up, the monitor stays turned off. You have to press the monitor power button to turn it on again. It does this every time the computer goes into power save mode. I posted a review to this effect on Newegg, to warn people.
So how do you fix this problem? This may seem strange, but if you run it off of DVI, the problem vanishes, the monitor goes into power save too (says so on the screen, instead of "no signal detected"). Power button blinks, and wakes up with the computer as it should. So, I have to run all mine off of DVI.
There is a workaround though, you can, and this is what is weird, if you run an adapter from HDMI to DVI, and hook DVI into the computer, and HDMI into the monitor, then the monitor stays turned on in power save mode WITH the HDMI connector. So why it doesn't do it with a HDMI to HDMI cable is beyond me. Apparently HDMI supports a power save signal, because when you adapt from HDMI on the monitor to DVI on the computer it works fine, blinking power light as it should when in power save. To add to the weirdness, if you run a cable from the computer on a HDMI output, and adapt that to DVI on the monitor, it also works fine. Goes into power save as it should.
Ok, so that's the first quirk. Second quirk (and this again can be worked around), if you hook it directly to the HDMI port on the computer and HDMI on the monitor, when the monitor is on it resizes the image down to about 85% of the screen, so big black areas around the image. If you run an HDMI to DVI cable (DVI on the monitor end, HDMI on the computer end), it fixes this and fills the whole screen.
So, apparently these LG's have some HDMI issues. I hate to complain, because really they are beautiful displays, running on IPS, instead of TN panels, so wide viewing angles, and good color. Overall I'm happy, but for a new user sticking to DVI might be the safest route with them. Their HDMI is a little weird.
Oh yes, and they are thin, very thin, and have nice VESA mounts standard. So overall very handy monitors, considering they are so inexpensive.