I used yesterday's (11 Jan 2012) Precise AMD64 Lubuntu ISO image to boot from a CD on an Acer 5732z, which has the same graphics controller as the OP's computer [Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09)]. After I choose the first option in the initial menu ("Try Lubuntu without any change"), the screen goes dark and I have to use the setpci method to turn the backlight on after I'm in LXDE. The output of uname -a is: Linux lubuntu 3.2.0-8-generic #14-Ubuntu SMP Fri Jan 6 01:56:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux.
I used yesterday's (11 Jan 2012) Precise AMD64 Lubuntu ISO image to boot from a CD on an Acer 5732z, which has the same graphics controller as the OP's computer [Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09)]. After I choose the first option in the initial menu ("Try Lubuntu without any change"), the screen goes dark and I have to use the setpci method to turn the backlight on after I'm in LXDE. The output of uname -a is: Linux lubuntu 3.2.0-8-generic #14-Ubuntu SMP Fri Jan 6 01:56:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux.