I recently bought an Edimax 300Mbps Wireless (model #EW-7612PIN) which also uses the RTL8191SEvB chipset for a new build of mine.
I'm running ubuntu 10.10 x64. After a fresh install, I can confirm that this card is working for me!
Running lshw -class network gives:
Linux black 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux
And running lsmod | grep r8192 gives:
description: Wireless interface
product: RTL8191SEvB Wireless LAN Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
width: 32 bits
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl819xSE driverversion=0017.0507.2010 firmware=63 ip=192.168.1.24 latency=0 link=yes multicast=yes wireless=802.11bg
resources: irq:16 ioport:de00(size=256) memory:fdcfc000-fdcfffff
And iwconfig wlan0 gives:
r8192se_pci 512896 0
cfg80211 170485 1 r8192se_pci
I can browse the net which is a little slower compared to my win7 laptop. File transfers over samba seem pretty good, averaging about 1.1MB/s. My wifi network uses WPA2 encryption as well. The only problem is that the bit rate seems to be stuck at 1 Mb/s and running sudo iwconfig wlan0 rate 54M doesn't seem to do anything.
wlan0 802.11bg ESSID:"starbuck" Nickname:"rtl8191SEVA2"
Mode:Managed Frequency=2.412 GHz Access Point: E0:CB:4E:62:C7:ED
Bit Rate=1 Mb/s
Retry:on RTS thr:off Fragment thr:off
Link Quality=89/100 Signal level=-50 dBm Noise level=-114 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
I'm available to run commands for others who are trying to get this card working - so feel free to ask me! (Seems a bit of a fluke that mine worked