I just bought a LG IPS 226v-PN monitor and am using a mini-dsiplayport to HDMI adapter to connect.
The monitor was automatically found and I can see and use it as a dual monitor but I am seen a snow like effect on the screen with pixel randomly activating (looks like snow).
The other problem is the screen keeps turning off and on.
I have switched it to both NTSC and PAL on the iMac. Not sure what I'm doing wrong?
iMac 21.5, Mac OS X (10.6.2)
have you tried the lg monitor on another source it be that it's defect or the adapter is
Yes, I tried it on my Macbook Air and the same thing happened.
I just tried it with selectin 720p for the external monitor and it is stable and dislaying fine except the resolution is completely out.
I wonder if it will work better with a MDA to DVI cable - something in the LG manual says HDMI is for media sources not PC sources but I fail to see the difference - a signal is a signal isn't it?
sounds like the lcd panel is defect then
what you describe is not normal behavior for any type of lcd monitor
The 'snow like effect' you describe could indicate you are experiencing timing/data corruption issues when sending a higher resolution data stream to the display. Could you post a picture showing the issue?
What type of HDMI cable are you using, and how long is it? If it's longer than 10 feet do you have a shorter 6 foot cable that you can test with to determine whether cable length is a factor? Not all cables are created equal.
What type of mini-DisplayPort to HDMI adapter are you using? Is it a good quality adapter?
Here's more info on MiniDisplay Port that may be helpful.
You gave me an idea and I tried another HDMI cable and it automatically just went to native 1080P and it seems fine.
Good thing I only paid $4 for it! Saves me $30 on a DVI adaptor I was going to buy.
I'm usually pretty logical with testing by exclusion but this time I assumed a cable is a cable.
Thanks for the inspiration,
LG monitor not working with iMac
