dw-1515 should work with native driver on OSX. However, it is true that 10.7.3 sometimes fails recognize AR9280 (dw1515).
The fix is to remove
from /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortAtheros40.kext/Contents/Info.plist, and reinstall IO80211Family.kext
There are other possibilities as well. Knowing the device ID of your dw-1515 card and related boot log (*Atheros*.kext) will be helpful.
"tadhabib"]First, let me thank for such a great tutorial! Bravo! I followed this guide and got almost everything working perfectly - except for WiFi.
I am running 10.7.3. I have X220 i7 with intel WiMax card and bluetooth.
I reflashed 1.28 whitelisted bios and replaced intel wifi module with dell dw-1515, but no wifi icon in the finder. I even tried installing HP aetheros equivalent which worked fine under win7, but again no go under OSX.
Without WiFi module I still get working bluetooth, but it would be nice to figure what's going on. I can see dell dw-1515 as a pci device.
Thanks for the solution. I got wifi working, then I decided to upgrade to 10.7.4, and started getting KP. So I ended up reinstalling 10.7, then I tried going to 10.7.2, but Aperture was not compatible with it. Funny, Aperture needed 10.6.8 or 10.7.3 but not 10.7.2! BTW, under 10.7 and 10.7.2 the dell 1515 Wifi is working fine. Also, I found somebody created a patch for this, http://macmanusnl.wordpress.com/2012/02/11/10-7-3-refuses-to-see-the-atheros-ar9280/
Through all those reinstalls my battery gauge functionality went, and now even with voodoo battery.kext I get no battery detection. Must be some other kext is missing, trying to figure out what. It was working fine before, but I don't remember what I exactly did.
This time I am holding off on 10.7.4 - I don't see a point when everything works smoothly under 10.7.3.
Happy Noob = no DSDT or console required.
--X220 i7 dw-1515 wifi 10.7.3 Hackintosh