AVS Special Member
Join Date: May 2008
Location: San Francisco - East Bay area
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Sounds like you're getting no HDCP handshake between the TV and laptop. This is common. DVI is usually a "dumb" interface - there's no communication between sender and receiver on many DVI-connected devices. HDMI passes information back and forth between the display and source during the handshake phase. If the DVI end of the connection is "silent", the TV thinks there's nothing out there.
The easiest fix is getting a laptop with HDMI out rather than DVI. That's not the cheapest fix however.
You MIGHT be able to get images if you set the laptop to 1920x1080p and RGB 16-235 and manually set the TV to RGB mode. If the laptop doesn't support 1920x1080, you'll have to find a resolution that the laptop DOES support that is also supported by the TV... like 1280x720. If you try to send some intermediate resolution that the laptop supports, but the TV doesn't support, the TV is likely to just sit there and do nothing.
There's no guarantee that manually setting resolutions and modes will help though... the TV may remain steadfast in its need to see the HDCP handshake. If that happens, you may just have to deal with the fact that your current laptop and TV aren't going to talk to each other.
If the TV has a PC-type VGA connector, that should work without a handshake - but again, you still have to set the laptop to a resolution that your TV supports. Sometimes DVI laptops' resolution selections are for resolutions common in LCD computer monitors with no consideration for HDTV resolutions and your TV may not support anything BUT HDTV resolutions. So, again, there could be a permanent "block" between the laptop and TV you are using if they don't share at least one common resolution.
"Movies is magic..." Van Dyke Parks
THX Certified Professional Video Calibration
Widescreen Review -- Home Theater & Sound