screen shaking with analog lcd connection

[Hashimoto]

Hello guys,

I'm used to connect my laptop to my LCD monitor, and using the analog
connection because it's the only way to do that. But I realized that the
screen shake a lot mainly to watch a movie.

If this information helps my video card is the GeForce 7150M and the
driver is updated, and my kernel version is 2.6.28.7.

Any idea ?

Thanks !