USB WiFi adapter for PBs
Steve Mozurkewich
smozurkewich at mac.com
Wed Jul 26 07:43:07 MDT 2006
I use the DWL-G122 with YDL, and I have no problems.
On Jul 26, 2006, at 9:23 AM, Jason DeVita wrote:
> On Tue, 25 Jul 2006, Ebrahim Mayat wrote:
>>
>> On Jul 24, 2006, at 8:28 PM, Jason DeVita wrote:
>>
>>> On Mon, 24 Jul 2006, Ebrahim Mayat wrote:
>>>> Since it is not possible to have YDL drivers for the AirPort
>>>> Extreme card in Powerbooks, the <http://
>>>> www.terrasoftsolutions.com/support/solutions/ydl_4.1/usb-802.11b-
>>>> key.shtml> suggests using the D-Link DWL-122 (prism3 chipset)
>>>> adapter for enabling WiFi. The DWL-122 is however currently
>>>> discontinued by D-Link. D-Link suggest the DWL-G122 as a
>>>> replacement product for the DWL-122. Questions is does the
>>>> driver for the DWL-122 work for the DWL-G122? or alternatively,
>>>> is there another USB WiFi adapter with associated YDL driver
>>>> that I could use with my PB 12"?
>>> According to http://bcm43xx.berlios.de/ there is a driver for the
>>> airport extreme cards included in linux kernel, starting with
>>> 2.6.17-rc2. There is a thread on the Gentoo forums about it:
>>> http://forums.gentoo.org/viewtopic-t-409194.html
>>> I've never tried it, as my G3 ibook has a non-extreme airport
>>> card. It does seem to require compiling the kernel, which may
>>> seem daunting to a newbie. But it really isn't that scary, and
>>> you'll sound really cool when you tell people you compiled your
>>> own kernel. Anyway, it's something to consider.
>>> Hope that helps,
>>> Jason
>>
>> Hi Jason
>>
>> Yes, this does help. The following URLs should provide what I need
>> for preparing a custom kernel :-)
>>
>> <http://www.terrasoftsolutions.com/support/solutions/ydl_general/
>> kernels.shtml> and <http://ppckernel.org>
>>
>> If I understand correctly, the driver for the AirPort Extreme
>> cards should already be in the latest kernel so there should be no
>> need to compile the driver separately?
>
> Ebrahim,
>
> Sorry to be so slow on the response. I haven't had much free time
> lately. You are indeed correct that you won't need to download a
> driver separately. It should be included with the kernel source.
> However, according to the berlios.de site pointed to above, there
> is a separate tool that is required to run the airport card, after
> the kernel has been installed. I don't know anything about this,
> but that's what site says. So you may want to read about that. One
> more thing to note, according to the site, is that the main kernel
> doesn't fully support WPA (only WEP). Though it sounds like there
> is another kernel branch that fully supports WPA, if necessary.
>
> You mentioned ppckernel.org. I looked at the config files for some
> of the pre-built kernels there, and I couldn't find any that
> include the BCM43xx drivers. So it seems you will have to build
> your own. You can get the kernel source from http://
> www.kernel.org. (in the old days, ppc specific features were
> difficult to get into the main kernel tree, so separate ppc kernel
> trees were maintained. Nowadays however, most of the ppc
> development is put directly into the main tree. Thus, you can just
> download the main kernel without having to worry about ppc patches
> or whatever)
>
> As for building the kernel, it's been a while since I've done it,
> especially on YDL (I mostly run Debian-x86 now...). So you might
> want to google-check what I say. Or maybe someone else reading
> this can fact-check.
>
> The terrasoft link you provided is for 2.2 and 2.4 kernels, and is
> outdated. There are small but important differences between
> compiling the 2.4 and 2.6 kernels. For the most part, the
> instructions will be the same for YDL versus other distros. So you
> can just google for a good kernel building how-to. This:
>
> http://www.digitalhermit.com/linux/Kernel-Build-HOWTO.html
>
> is sort of the standard how-to. It is very comprehensive. So if
> you want to really understand what you're doing, it could be a good
> place to start.
>
> I'll attempt here an executive summary:
>
> =====================================
> [1] Download the kernel source from www.kernel.org. Get the latest
> stable version (currently 2.6.17.7). Make sure to get the full
> source and not just the patch.
>
> (from here on out, I'll assume we're running as root. It is not
> necessary to do so until later, but this will simplify things.)
>
> [2] Unpack the kernel
>
> # mv /PATH_TO_WHERE_YOU_DOWNLOADED_IT/linux_2.6.17.7.tar.bz2 /
> usr/src/
> # cd /usr/src
> # bunzip2 linux_2.6.17.7.tar.bz2
> # tar xf linux_2.6.17.7.tar
> # cd linux_2.6.17.7
>
> [3] Configure the kernel. Since you are only changing one thing,
> it's best to start with the default YDL kernel config.
>
> # cp /boot/config-2.6.xx-blah-blah .config
> # make mrproper
> # make menuconfig
>
> A menu-based configurator will come up -- this is where you need to
> tell the kernel to compile support for the bcm driver. For this
> step, follow the instructions from the gentoo forum page listed above.
>
> [4] Build and install the kernel and modules
>
> # make vmlinux
>
> (go get a snack)
>
> # make modules
>
> (go have some coffee)
>
> Assuming no errors above
>
> # make modules_install
> # cp arch/ppc/boot/vmlinux /boot/vmlinux-2.6.17.7
> # cp System.map /boot/System.map-2.6.17.7
> # ln -s /boot/System.map-2.6.17.7 /boot/System.map
>
> [5] Configure yaboot. Open up /etc/yaboot.conf in a text editor,
> and copy the section that starts with
>
> image=/vmlinux-2.6.xx-blah
>
> including all the indented lines below it. In the (now) second
> instance, change "image=/boot/vmvlinux-2.6-xx-blah" to "image=/boot/
> vmlinux-2.6.17.7" and change "label=linux" to
> "label=myhairisonfire" (or whatever name you desire). Then run
>
> # /sbin/ybin
>
> to set the changes.
>
> [6] Reboot and pray. Upon rebooting, you'll get the normal choice
> of cdrom, osx, or linux. After you choose linux, yaboot will give
> you a prompt (only for a couple seconds -- so be ready, or else it
> will boot the old kernel). Type "myhairisonfire" (or whatever name
> you chose) at the prompt and you will boot the new kernel. If
> things go bad, you can return to the old kernel by rebooting.
> =====================================
>
> Well, hopefully I haven't made any mistakes. Report back with any
> question or problems! The nice thing about building a kernel for
> the first time is that it is a win-win situation. Either
> everything will work just fine, or you'll get to learn a lot about
> how linux works!
>
> -J
>
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