Macbook Pro 10.6.5 can't find my LCD-tv

Hello!
I'm having issues connecting my Macbook Pro to my LG-LCd with this update.
It works well with update 10.6.2 but not:
10.6.3
10.6.4
and now 10.6.5
The screen does flash in light blue on MB as it usually does when it is connected but I get no picture on the tv. The Mac acts like nothing apart from that.
Anyone else having a similar issue?

I think this is a continuing problem with the drivers for the lower spec graphics chip on the MacBook Pro and other systems. I have the same problem with a 20" LG monitor when my MacBook Pro is set for 'Better battery life' in the Energy Saver prefs. This energy setting makes the MacBook Pro use the NVIDIA GeForce 9400M graphics processor. However, if you switch to the higher spec graphics chip by setting the Energy Saver to 'Higher Performance' and logout and back in again, it'll switch to using the better NVIDIA GeForce 9600M GT graphics processor instead. With the higher spec graphics processor selected, I find the problem goes away!
It looks like 10.6.2 was the last version of Snow Leopard that has decent driver software for the lower spec NVIDIA GeForce 9400M. Even the recent 10.6.5 doesn't seem to have this working properly!
Regards
Peter

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