Kenneth E. Harker maintains a quite valuable database at Linux on Laptops . Please have a look at his site to get current information about laptop related mailing lists, newsgroups, magazines and newsletters, WWW sites and a big and up-to-date database about many different laptop pages.
The author maintains a database about different laptop hardware, such as PCMCIA cards, graphic cards, sound cards, IrDA® devices and more at MobiliX
Portable computing FAQ1 from the comp.sys.laptops news group.