Can't connect MB (OS-X Lion) to TV, please help!

Works fine for me when using a mini display to hdmi converter. Same when using the monitor converter. Using Lion on an early 2008 MBP.

Try messing with the resolutions on display preferences.

Same here unless I restart while the screen is plugged in.

-1 for Lion.

Still waiting for updates.

Im in a similar situation...

iMac, trying to connect to my 42" HDTV
via Mini Displayport to HDMI Adapter

TV says No Signal even though it knows when the HDMI Cable is plugged in,
and my iMac doesn't even detect the TV...

and im using OS X Lion (which was upgraded)
im trying to get some help aswell but no luck yet....
I dont really want to waste money buying loads of different Adapters and Cables though.

Same situation has anyone found a way to make this work

MBA 2011 running lion, detects television, television does not detect macbook air

This is why you should do clean installs and not upgrades. Try resetting the PRAM.

I had the Apple Store do a fresh install of Lion over the summer, and I am having the same problem. It only connects if I restart my computer while the adapter is plugged in to the tv.

I've got a late 2010 13" MacBook Pro, and since upgrading to Lion my Belkin Mini DP-HDTV shows which TV it's connected to, but doesn't display anything on the TV. Tried resetting PRAM and SMC, but to no avail. Is there some other way to make this connection? Did Apple stop this from working (as it did in Snow Leopard) so we have to get Apple TV? From what I've read Apple TV struggles with anything better than 480p.

Anyway, any suggestions to get this working would be much appreciated!