Odd Issue - PC stopped working on a SPECIFIC TV

Flamesilver

Honorable
May 24, 2013
3
0
10,510
My computer is usually connected to my 55" LG TV (LM6500U, I think) and everything ran fine. Last night, I went to turn off my TV; decided about 5 seconds later that I needed it back on so I turned it back on. The picture became corrupted (mostly black, some pink / fucia and green boxes), and reboots did not help.

Now the TV just doesn't detect that my PC is outputting a signal, even!

I've tested the TV - TV is fine; PS3 is running off of HDMI 2 no problem... Tried different HDMI cables and ports to no avail. Updated TV firmware, even.
I've tested the PC - I'm currently using the same HDMI port from the same video card connected to my Playstation 22" TV Display and it's fine.

Any ideas what else I can try? What an odd thing... both the TV and the PC work, just not with each other anymore!
 

Flamesilver

Honorable
May 24, 2013
3
0
10,510
I ended up unplugging everything to the TV, and plugged my PS3 into the SAME HDMI INPUT as what the PC was working on. Then I plugged my PC back into that port and it worked.

I'm guessing it had to do with HDCP not shutting down gracefully when I turned the TV off and back on again too quickly.