Restricted Drivers, and enable the firmware for
broadcom 43xx chipset family, then it will pop-up a window ask you to
slect the firmware to download, pls choose the second one which is
http://xeve.de/down/wl_apsta.o
,after finishing the download,ubuntu will automatically install the
firmware.

SOUND

I
have tested all the alsa driver version, and some patches, which
still have no effect to drive my sound card. Finally I found this
article http://ubuntuforums.org/showpost.php?p=3768914&postcount=60
which help me to solve my sound card issue, so now I can listen
music and watch movies under my new laptop now.

2.Summary

Hardware
component

Status under
Ubuntu 7.10

Notes

Intel(R)
Pentium(R) Dual CPU T2330 @ 1.60GHz

Works

13.3¨WXGA
TFT(1280X800)

Works

nVidia GeForce
8400M GS(128MB)

Works

1GB RAM

Works

160GB HDD(WDC
WD1600BEVS-2)

Works

DVD±RW(DVD
RW AD-7640A)

Works

NetLink BCM5906M
Fast Ethernet PCI Express

Works

BCM94311MCG wlan
mini-PCI

Works

82801H (ICH8
Family) HD Audio Controller

Works

OSS

Memory Card
Reader

Not test

Internal 56K
modem

Not test

Lenovo EasyCamera

Not test

Bluetooth

Works

3.Computer
Details

Pls see the details attached pdf file.

Download Install Ubuntu 7.10 on My Lenovo F31A Howto