I'm having a similar problem and was wondering if anyone might be able to help. I've followed the instructions from the OP and am having a similar problem of my wifi adapter not being read. No lights on the adapter and no ath0 in terminal when testing it.
I've been racking my brain for the last week or so to get a solution and any help would be graciouslly accepted.
I'm running Backtrack 4 off a persistant usb install on a Sony Vaio VGN-NS190J. I'm also using a DWA-160 A2 usb wifi adapter.
My output for ifconfig, iwconfig, and lsmod are as follows:
root@bt:~# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:528 (528.0 B) TX bytes:528 (528.0 B)
root@bt:~# iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11abgn Mode:Managed Access Point: Not-Associated
Tx-Power=15 dBm
Retry long limit:7 RTS thrff Fragment thr
ff
Encryption keyff
Power Managementff
root@bt:~# lsmod
Module Size Used by
ipv6 239348 14
i915 172552 2
drm 142208 3 i915
sbs 10940 0
sbshc 4500 1 sbs
acpi_cpufreq 7808 0
cpufreq_stats 4728 0
cpufreq_powersave 1268 0
cpufreq_performance 1300 0
cpufreq_ondemand 7080 2
freq_table 3476 3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand
cpufreq_conservative 7048 0
iptable_filter 2324 0
ip_tables 10916 1 iptable_filter
x_tables 13592 1 ip_tables
parport_pc 24292 0
lp 9412 0
parport 30572 2 parport_pc,lp
snd_hda_codec_realtek 194936 1
snd_hda_intel 24712 1
snd_hda_codec 57204 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 6776 1 snd_hda_codec
snd_pcm_oss 37728 0
arc4 1588 2
snd_mixer_oss 14324 1 snd_pcm_oss
snd_pcm 67704 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
ecb 2484 2
snd_seq_dummy 2424 0
snd_seq_oss 27328 0
iwlagn 217684 0
joydev 9728 0
iwlcore 212380 1 iwlagn
snd_seq_midi 5952 0
mac80211 205220 2 iwlagn,iwlcore
snd_rawmidi 19488 1 snd_seq_midi
cfg80211 118824 3 iwlagn,iwlcore,mac80211
sdhci_pci 6900 0
sdhci 15864 1 sdhci_pci
snd_seq_midi_event 5972 2 snd_seq_oss,snd_seq_midi
video 18024 1 i915
output 2388 1 video
rfkill_backport 17096 1 cfg80211
mmc_core 46704 1 sdhci
sony_laptop 28224 0
psmouse 41732 0
uvcvideo 58016 0
snd_seq 47568 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event
rtc_cmos 10156 0
serio_raw 5016 0
videodev 37056 1 uvcvideo
rtc_core 15792 1 rtc_cmos
snd_timer 19068 2 snd_pcm,snd_seq
snd_seq_device 6048 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq
rfkill 9328 2 sony_laptop
led_class 3608 2 iwlcore,sdhci
v4l1_compat 13336 2 uvcvideo,videodev
rtc_lib 2388 1 rtc_core
iTCO_wdt 10584 0
iTCO_vendor_support 2840 1 iTCO_wdt
snd 50468 14 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec, snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_se q_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
intel_agp 26108 1
shpchp 31560 0
soundcore 5856 1 snd
snd_page_alloc 7836 2 snd_hda_intel,snd_pcm
agpgart 29356 3 drm,intel_agp
evdev 9120 12
aufs 143020 1
exportfs 3828 1 aufs
squashfs 21144 1
sg 25064 0
firewire_ohci 22648 0
firewire_core 40640 1 firewire_ohci
sky2 45464 0
fuse 53104 1


ff Fragment thr
