I started installing Linux on my Dell Studio 1555 as soon as I got it and checked that everything was alright. I installed OpenSUSE 11.1 initially. I had issues with installing drivers for my ATI Mobility Radeon HD4570. The OpenSUSE wiki said that its drivers had no Linux version. I tried different methods but the drivers just refused to work. Actually the problem is that ATI is gradually making its drivers open source and getting rid of the proprietary drivers. I was on the verge of believing that I had no option but to wait for the release of the Linux drivers and use Windows till then. That was a very bad feeling. Then I thought about giving Ubuntu a try. The proprietary FGLRX driver worked perfectly well with Ubuntu.
I installed Ubuntu and everything seemed to be alright initially. After a while, I realized that there was a problem with sound. In fact, I was getting no sound. I searched the Ubuntu forums and found a simple solution to the issue. Here's how to solve the no-sound problem in Ubuntu on Dell Studio.
You just need to edit the alsa-base.conf file. To do that run this command in the terminal-
sudo gedit /etc/modprobe.d/alsa-base.conf
Then add this line to the file-
options snd-hda-intel model=dell-m6
Save the file and restart your laptop. This should solve the problem. You should start getting sound now.