Hello Herve. I have installed the DSDT and it boots up. but the DSDT did 1 change on mavericks that I notice. I have no audio, no graphics qe/ci or acceleration and no internet (Ethernet) . Sleep, shut down and restart all works. Before the DSDT I couldn't sleep so it did something to the computer. Please help with audio, Ethernet and graphics. 
  
DELL PRECISION T3400 
  
CPU : Intel Core Extreme 3.00GHZ 
Chipset : Intel X38 Express chipset w/ICH9 
Graphics Card: Nvidia Quadro FX 3700 (G92) 
Ethernet : Broadcom NetXtreme 57xx 
Audio : CMI8738  
Ram : 8 Gb DDR2