I just tried to connect the computer to another LCD TV and it worked perfectly fine. Problem is thus related to the Samsung TV.
I have installed a linux based "entertainment system" for music and video playback. The computer is an Asus eeeBox and it features both VGA and HDMI output (using an Nvidia NEO video chipset) and while I can get it to connect to my Samsung TV (LE40F7) perfectly fine through VGA with any resolution I want, the HDMI connection does not work.
I have tried different operating systems on the eeeBox, all with the same results. The HDMI cable seems to be OK, working fine with my blueray player, but when connecting to the PC the TV never picks up a signal.
I have looked through various logfiles on the computer and it seems the TV is not detected at all when connecting through HDMI. One guess is that the Samsung TV does not provide correct EDID (or whatever it's called) information.
I've read about other people having similar problems and that was solved if they put the TV source to HDMI during PC boot, but I cannot choose HDMI source if the TV does not detect an incoming signal (catch 22 problem?)
Does anyone else have the same problem? Are there any firmware upgrades I should apply, I run the TV set on the pre-installed firmware.