First of all, thanks to all of you that have helped me...I posted this original thread and learned a lot in the meantime, and ended up buying the LG 42LD450. I was excited to get it yesterday and see that it was labeled 42LD450-UA.CUSWLH, so I knew it had the IPS panel. I took it out and configured the HDMI1 input using thepoohcontinuum's settings
and connected it to my laptop. I pulled up colmino's 4:4:4 color chart post
and expected to see results like thepoohcontinuum got
. Instead, I saw:
And as I scrolled the image by one pixel, the filled in part between where there are supposed to be 5 vertical lines shifted like:
so based on what I read, this isn't doing 4:4:4 chroma correctly. I thought, am I doing this correct? Is it possible that they updated the firmware on the LD450 and now it isn't working? (mine was manufactured Oct 2010). I clicked the info button on the TV and it showed 1080p, and I'm running Windows Vista on the laptop.
So next I tried booting up the same laptop, connected in the same way to the same cable, with an Ubuntu 10.04 Boot CD. I didn't expect anything to be different, but I was pleased and surprised to see:
Looks perfect as far as I can tell, I zoomed in a lot and it is very crisp!
So it looks like the HDTV does 4:4:4 properly, but either my computer is not sending it properly or it is not negotiating into the correct mode?
The laptop's video is just the built in Intel 965 series chipset, HDMI port out. I also tried a similar test on my desktop computer which has a NVIDIA 210 card: HDMI output, if I used the Ubuntu boot CD which just has some generic NVIDIA-compatible driver, it works great, but if I booted up the computer to my normal Ubuntu install, which uses the actual NVIDIA 260.19.06 driver, it fails 4:4:4.
I realize that not everyone uses Linux, but does anyone at least know what could be going on and how to fix it in Windows (then I can figure out how to do the same thing in Linux)? Its weird that I have two different video cards (one Intel and one NVIDIA) on two different machines, and they both fail when handled by one set of drivers and succeed when handled by another set. What is the one drivers doing differently that is causing 4:4:4 to work? Thanks for any assistance.