Comment 36 for bug 485108

I have the same issue on my Sony VGN-FW11ER with kernel from Ubuntu karmic repository. But in my case I can make suspend to work (but lost brightness in this case). I install kernel image from mainline (At present I use 2.6.31.6 version). In this case brightness doesn't work (there no device in /sys/class/backlight/), but if I patch DSDT table, brightness starts working, /sys/class/backlight/ has device, but suspend do not want to resume - laptop completely hangs. So I think the problem is situated in kernel - acpi. What else my test shown that in kernel 2.6.29 brightness and suspend worked, in 2.6.30 suspend with brightness did not want to work.