Bad case of dithering with ION, HDMI and HDTV
The situation is as follow:
Ubuntu 64 bits running on Packer Bell Mini -rebranded Acer Revo-, last stable Nvidia driver.
VGA conection to HDTV gives good 1080p image. HDMI conection to HDTV gives annoyingly big dithering. Other HDMI source, XBOX 360, with the same HDMI cable works ok. The PC conected to a PC monitor through HDMI doesn't have the same problem.
I'm totally at lost here, any idea will be welcome. Thanks for reading.