I mentioned in a previous post that a friend had installed ubunt 9.04 on his new dell studio 1555 laptop and that their were no real problems. Well it seems after a bit of time a few problems did show up. The 64-bit kernel (2.6.28) in ubuntu 9.04 had some problems with suspend.
So he installed Ubuntu 9.10 (kernel 2.6.31) and that fixed all the problems with suppend. He has to ad 'noapic' to the kernel line in grub/menu.lst because to get some the special laptop keys working. Their is a bug on it, so maybe it will be fixed in the next few months. Their is also no need to add entries into the modprobe.conf anymore to get the sound working.
So it looks like next release of Ubuntu (9.10) will be a good one for dell studio laptops.