How to install Intel GMA driver 2302 and nVidia Verde driver 285.62 with working BLU brightness adjustment:
  1. Switch to Stamina
  2. Flash BIOS with graphics switching policy hack (VGN-Z41WD), set it to static
  3. Windows Update will automatically install Intel GMA driver 2302
  4. Switch to Speed
  5. Reboot
  6. Uninstall any nVidia drivers
  7. Extract Verde
  8. Download nvwi.inf to NVIDIA\DisplayDriver\285.62\WinVista_Win7_64\International\Display.Driver
  9. Install Verde via Remote Desktop Sharing
  10. Disable PowerMizer with PowerMizer Manager via Remote Desktop Sharing (else screen flickering and BSOD)
ALPS Touchpad driver 7.106.529.210 for Windows 7 with reliable mouse button detection
Patched sony-laptop.c kernel module for Ubuntu 9.10/kernel 2.6.31 / Ubuntu 10.04/kernel 2.6.32 with dynamic graphics switching policy GPU power down to save 20-15=5 W (full brightness+WLAN)
Reassign important keys so Fn key isn't necessary:
Page Up^
Page DownCaps Lock
HomePrint
EndPause
Windows: Vaio Z.ktw for use with KeyTweak; Linux: .Xmodmap
Download MWqcgps and start it with 
MWqcgps.exe 1
While it is running, GPS NMEA sentences are available on the COM Port called "Qualcomm HS-USB NMEA 9222" in the Device Manager. Example output: 
$GPGSV,3,1,10,02,26,309,35,04,56,254,39,07,29,174,26,08,00,189,*7C
$GPGSV,3,2,10,10,16,292,16,13,86,277,35,16,11,064,24,20,33,112,29*71
$GPGSV,3,3,10,23,61,060,18,32,07,106,*70
$GPGGA,121047.9,4941.565203,N,01049.171542,E,1,07,1.5,348.9,M,,,,*05
$GPVTG,,T,,M,0.0,N,0.0,K,N*2C
$GPRMC,121047.9,A,4941.565203,N,01049.171542,E,0.0,,030410,,,A*49
$GPGSA,A,3,02,04,07,10,13,20,23,,,,,,2.5,1.5,2.0*32
Sven Killig 2010, 2011