Thank you for the additional information. A few more questions:
1. You say this worked in Hardy. Did you use the "i810" legacy driver that was 
available in Hardy, or did it also work with the "intel" driver? If you don't 
remember, it would be nice if you could test a Hardy LiveCD and upload the 
Xorg.0.log here. 
2. Do you have the possibility to attach another monitor to the VGA connector 
and see if it works? This should tell us if it is something particular with the 
TV that triggers this or if it is a generic problem with driver and your VGA 
adapter.
3. It would be interesting to see if the monitor is detected using other 
programs than xorg. Could you try `sudo get-edid >edid.bin 
2>get-edid-errors.txt` and upload the files here? (edid.bin is binary, but if 
the monitor isn't detected it will be empty) You will need the read-edid 
package for this. Another program that does this is ddcprobe (run `sudo 
ddcprobe` and attach the output here). This is in the package xresprobe.

With the above questions answered, I think this bug is ready to be forwarded to 
the intel developers. If you want to give the xorg-edgers repository a try, I 
would wait until you have done that and create the upstream bug report with the 
logs from that release. If not, it is okay to forward it with the current 
information. However, you may be asked to test the latest development version 
later to test any proposed fixes. So this gives the final question:
4. Do you want to test xorg-edgers version before we send this upstream?

-- 
[i945G] Samsung TV not detected on VGA output (no screens)
https://bugs.launchpad.net/bugs/379157
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in ubuntu.

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