I installed Hardy today on my HP dv6500z laptop.

Laptop specs:
AMD Turion 64 TL 62
2 GB Ram
Nvidia GeForce 8400M GS
Broadcom 4321 a/b/g/n WiFi adapter.

Ubuntu installed sucessfully. Looks beautiful.

Only issues are:
1. Wifi doesnt work.
2. Nvidia card doesn't work fully (works currently in minimum graphics)
3. Every time I start Ubuntu the screen is very dim. I have to increase brightness by pressing Fn + F8 everytime.

Please help me solve these issues or guide me to the links which have resolved this.