[X60] External screen problem

[thibouille27]

Bios 1.06
Model: 1706-85G

I set Bios so the boot scrren is lappy's TFT.
However, if I boot with external CRT plugged on my Ultrabase, I will get Windows desktop on my CRT and nothing on the TFT.

If I plug the CRT after the boot I can activate Dual screen desktop and all is well. But then I have an Ultrabase and one of its purpose is to avoid having to plug it everytime...