My Vostro 1510 comes with an on-board wireless miniPCI card but it does not work “out of the box” with Ubuntu, even with the latest 2.6.39 kernel. The only option that works for me is the binary hybrid blob driver provided by Broadcom, but even that is out of date. They need help in order to work with 2.6.36 and upwards and I have a patch for that.
Chipsets supported by “Broadcom’s IEEE 802.11a/b/g/n hybrid Linux® device driver” are: BCM4311, BCM4312, BCM4313, BCM4321, BCM4322, BCM43224, and BCM43225, BCM43227 and BCM43228.
The my exact chipset from lspci command:
Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)
If you want the latest (read bleeding edge) kernel that the Ubuntu developers are working, then have a look here:
Be sure to download the 3 files matching your architecture and install.
I am currently using 2.6.37-rc3-natty which will be the kernel that Natty Narwhal (11.04) will be based on. It just works, everything is detected and there is a noticeable increase in responsiveness.