My Edimax Wireless adaptor doesn’t work on my RBP2. It used to work a few years ago, but not sure what distro I was using then.
From what I can find in the forums, there are a few (conflicting) drivers available. According to @sam_nazarko here, it looks like the fix might be as simple as adding the USB device IDs to some list.
lsusb
Bus 001 Device 006: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]
dmesg
[ 2888.269673] usb 1-1.2: USB disconnect, device number 6
[ 2891.896543] usb 1-1.2: new high-speed USB device number 7 using dwc_otg
[ 2892.028591] usb 1-1.2: New USB device found, idVendor=7392, idProduct=7811, bcdDevice= 2.00
[ 2892.028617] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2892.028629] usb 1-1.2: Product: 802.11n WLAN Adapter
[ 2892.028642] usb 1-1.2: Manufacturer: Realtek
[ 2892.028654] usb 1-1.2: SerialNumber: 00e04c000001
lsmod
Module Size Used by
8021q 32768 0
garp 20480 1 8021q
stp 16384 1 garp
llc 16384 2 garp,stp
rfkill 28672 1
iptable_nat 16384 0
nf_nat_ipv4 16384 1 iptable_nat
nf_nat 36864 1 nf_nat_ipv4
nf_conntrack 143360 2 nf_nat_ipv4,nf_nat
nf_defrag_ipv6 20480 1 nf_conntrack
nf_defrag_ipv4 16384 1 nf_conntrack
iptable_mangle 16384 0
iptable_filter 16384 0
snd_bcm2835 28672 0
bcm2835_codec 40960 0
videobuf2_dma_contig 20480 1 bcm2835_codec
bcm2835_v4l2 45056 0
snd_pcm 114688 1 snd_bcm2835
v4l2_mem2mem 32768 1 bcm2835_codec
bcm2835_mmal_vchiq 32768 2 bcm2835_codec,bcm2835_v4l2
snd_timer 36864 1 snd_pcm
videobuf2_v4l2 28672 3 bcm2835_codec,bcm2835_v4l2,v4l2_mem2mem
videobuf2_vmalloc 16384 1 bcm2835_v4l2
videobuf2_memops 16384 2 videobuf2_dma_contig,videobuf2_vmalloc
snd 86016 3 snd_timer,snd_bcm2835,snd_pcm
videobuf2_common 53248 4 bcm2835_codec,bcm2835_v4l2,v4l2_mem2mem,videobuf2_v4l2
v4l2_common 16384 1 bcm2835_v4l2
bcm2835_thermal 16384 0
videodev 229376 6 bcm2835_codec,v4l2_common,videobuf2_common,bcm2835_v4l2,v4l2_mem2mem,videobuf2_v4l2
media 36864 3 bcm2835_codec,videodev,v4l2_mem2mem
bcm2835_gpiomem 16384 0
uio_pdrv_genirq 16384 0
fixed 16384 0
uio 20480 1 uio_pdrv_genirq
sg 32768 0
ip_tables 24576 3 iptable_mangle,iptable_filter,iptable_nat
x_tables 36864 3 iptable_mangle,ip_tables,iptable_filter
ipv6 503808 48