I believe that Ubuntu's hardware support is not as good as it could be. For instance, I have a
Dell 1420n laptop that shipped with Feisty. It ran Gutsy and now runs Hardy.
With the upgrade to Hardy, the sound driver is broken. I would have expected the Ubuntu folks
to take care not to break a somewhat flagship piece of hardware that ships with their
distribution. If you look on the Dell website, the 1420n model still only ships with Gutsy
last time I checked.
To be fair, there is a work around (which is to run the real time kernel). However, it isn't
something that a less than geeky user would even think to do, and the real time kernel
sometimes fails to work with the sound also.
I tried to participate in the bug reporting and fixing also, but I have gotten no replies from
Ubuntu folks on the bug report, only others with similar problems.
That this situation occurred in what Ubuntu is calling an LTS release is truly sad IMO.
BTW, for anyone else with this problem, the next upstream kernel allegedly fixes this issue.
Maybe there's a backport or something.