David McGuffey wrote:

...

How do I back out of these directions?

"yum install iwl4965-firmware

rmmod iwl4965; modprobe iwl4965

rmmod iwl4965 yum erase iwl4965-firmware

...

Your wireless device should be working now. Enable NetworkManager to

use it.

...

Starting from CentOS 5.3 (kernel 2.6.18-128) the kernel includes the

iwlagn

...

kernel module. If you are running an older kernel, please look at

the ipw4965

...

method above. First download and install the firmware (see above), then just

reload the iwlagn

...

kernel module:

rmmod iwlagn; modprobe iwlagn"

I managed to grab the wrong set of firmware for my Dell Latitude

D830. There was

...

conflicting guidance on the Internet as to which device was

installed...I've now

...

found out that it is a Broadcom device. I need to remove the Intel

firmware and

...

install the Broadcom firmware.

No, not really. Firmwares are generaly installed to /etc/firmware and the correct firmware will automatically be loaded and used by the wireless driver, so it really doesn't matter if a bunch of other firmwares are present on your system or not.

But if you want to uninstall them, just use:

yum erase iwl4965-firmware

...

BTW, it appears that support for the Broadcom wireless device is not

in the

...

CentOS repositories. I think I 'm going to have to download the

Broadcom files

...

and "make" the firmware module. I'd like to avoid that...any

guidance?

...

Please show us:

lspci

then:

lspci -n | grep '0X:0Y.Z'

where 0X:0Y.Z is the first column output for the Broadcom wireless device. Then we may be able to tell you if it's supported or not, and what driver to use.

lspci shows:

[root@ErichLaptop ~]# /sbin/lspci 00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c) 00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 0c) 00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02) 00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02) 00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 02) 00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 02) 00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f2) 00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA IDE Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02) 01:00.0 VGA compatible controller: nVidia Corporation Quadro NVS 140M (rev a1) 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5755M Gigabit Ethernet PCI Express (rev 02) 0c:00.0 Network controller: Broadcom Corporation BCM4312 802.11a/b/g (rev 01)

uname -a shows:

[root@ErichLaptop ~]# uname -a Linux ErichLaptop.mcguffeyfamily.net 2.6.18-128.1.10.el5 #1 SMP Thu May 7 10:39:21 EDT 2009 i686 i686 i386 GNU/Linux

Based on this, I know I have a Broadcom NetXtreme ethernet adapter (eth0 in my case) and a Broadcom BCM4312 wireless adapter (eth1 in my case).

modprobe -l shows a b43 module. But obviously it isn't sufficient for the BCM4312.

eth0 works well (although DNS dies on a regular basis, for which there are a lot of heated discussions about NetworkManager and dns on the various linux sites). eth1 is not found and when I right-click on the NetworkManager icon on the top right corner of the screen, it shows a wireless in a grayed out text. When I go to System>Administration>Network, I cannot enable the wireless (eth1) device. It tries and then after trying to find an IP, it fails.