i have dell labtop , latitude d420. i installed centos , but when the installation was over my wireless botton on my laptop off. only the bletooth button was on. Can someone help how i can install the wifi driver on my laptop using centos. i tried a series of description online but i did not succeed.
i have a list here below. Can someone tell me where the wifi driver is found this list and how i can install it

[root@wisetech ~]# lsmod
Module Size Used by
ip6table_filter 6849 1
ip6_tables 18053 1 ip6table_filter
ip_conntrack_ftp 11569 0
ip_conntrack_netbios_ns 6977 0
xt_state 6209 7
ip_conntrack 53281 3 ip_conntrack_ftp,ip_conntrack_netbios_ns,xt_state
nfnetlink 10713 1 ip_conntrack
iptable_filter 7105 1
ip_tables 17029 1 iptable_filter
autofs4 29253 3
hidp 23105 2
rfcomm 42585 0
l2cap 29633 10 hidp,rfcomm
bluetooth 53925 5 hidp,rfcomm,l2cap
lockd 63337 0
sunrpc 146685 2 lockd
ipt_REJECT 9665 1
ip6t_REJECT 9409 1
xt_tcpudp 7105 20
x_tables 17349 6 ip6_tables,xt_state,ip_tables,ipt_REJECT,ip6t_REJECT,xt_tcpudp
ipv6 270561 21 ip6t_REJECT
xfrm_nalgo 13381 1 ipv6
crypto_api 12609 1 xfrm_nalgo
loop 18761 0
dm_mirror 24393 0
dm_multipath 25421 0
scsi_dh 12097 1 dm_multipath
video 21193 0
backlight 10049 1 video
sbs 18533 0
power_meter 16461 0
hwmon 7365 1 power_meter
i2c_ec 9025 1 sbs
dell_wmi 8401 0
wmi 12137 1 dell_wmi
button 10705 0
battery 13637 0
asus_acpi 19289 0
ac 9157 0
lp 15849 0
sg 36573 0
snd_intel8x0 35421 1
snd_ac97_codec 93025 1 snd_intel8x0
ac97_bus 6337 1 snd_ac97_codec
snd_seq_dummy 7877 0
snd_seq_oss 32576 0
snd_seq_midi_event 11073 1 snd_seq_oss
snd_seq 49585 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 11725 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss 42817 0
snd_mixer_oss 19009 1 snd_pcm_oss
pcspkr 7105 0
snd_pcm 72133 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
e1000 119381 0
ide_cd 40161 0
parport_pc 29157 0
i2c_piix4 13133 0
cdrom 36577 1 ide_cd
parport 37513 2 lp,parport_pc
i2c_core 24001 2 i2c_ec,i2c_piix4
snd_timer 24517 2 snd_seq,snd_pcm
snd 55749 11 snd_intel8x0,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd _timer
soundcore 11553 1 snd
snd_page_alloc 14281 2 snd_intel8x0,snd_pcm
serio_raw 10693 0
dm_raid45 67145 0
dm_message 6977 1 dm_raid45
dm_region_hash 15681 1 dm_raid45
dm_log 14657 3 dm_mirror,dm_raid45,dm_region_hash
dm_mod 63225 4 dm_mirror,dm_multipath,dm_raid45,dm_log
dm_mem_cache 9537 1 dm_raid45
ata_piix 23621 0
ahci 35145 6
libata 157317 2 ata_piix,ahci
sd_mod 25281 7
scsi_mod 141973 4 scsi_dh,sg,libata,sd_mod
ext3 125513 6
jbd 57321 1 ext3
uhci_hcd 25549 0
ohci_hcd 25065 0
ehci_hcd 33869 0


thanks for your reply.

Post back the result of lspci and lsusb. Hopefully we can spot what chipset you have.

If I understand it properly, lsmod will list the loaded modules. If your wireless isn't working, the module is most likely not loaded.

Try running dmesg as root or going to the Dell website with your computer's service tag number handy (sticker on bottom) and find out what type of wireless chip you have (there's a good chance it's a Broadcom chip, since Dell seems to favor Broadcom). The output of dmesg is lengthy; you may need to increase the scrollback settings in the terminal program you are using; I usually set mine to 1500 lines. (Edit-->Preferences in Gnome Terminal, Settings-->Configure Profile in Konsole)

Once you have verified the type of chip, then we can help figure out how to get it working.

I recommended wicd for a wireless interface. It is far superior to Gnome network manager--faster lighter smaller and it works flawlessly with Fluxbox. I've haven't used the K Wireless interface, but I suspect I'd be saying the same about it.

The CentOS Wiki is very informative on the topic:
http://wiki.centos.org/HowTos/Laptops/Wireless

If frankbell is correct and you have Broadcom:
http://wiki.centos.org/HowTos/Laptops/Wireless/Broadcom

ok guys will be right back