Hi Larry, I ran a few more tests around the subject thread. Brought up my machine on the Knoppix-6.7.1 DVD, (his latest): uname -a Linux Microknoppix 3.0.4 #12 SMP PREEMPT Thu Sep 8 05:27:05 CEST 2011 i686 GNU/Linux iwconfig --version iwconfig Wireless-Tools version 30 Compatible with Wireless Extension v11 to v22. Kernel Currently compiled with Wireless Extension v22. Please note the same weird version, 30. There must be a thriving black market for wireless-tools in Germany :) Whatever driver Knoppix uses, it is in the kernel (i.e., not as a module) and BTW, 'iwconfig wlan0 essid ...' doesn't work either. lsusb --version lsusb (usbutils) 0.87 Two odd things: 1. Bus 002 Device 003: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191S WLAN Adapter Please note "RTL8191S" above. 2. ls -og /lib/firmware/rtlwifi -rw-r--r-- 1 122328 Jan 4 2011 rtl8712u.bin As opposed to things on my subject machine (3.2.9): lsusb --version lsusb (usbutils) 0.73 1. Bus 002 Device 003: ID 0bda:8172 Realtek Semiconductor Corp. Note: the missing "RTL8191S" could very well be caused by my using a lower lsusb version. 2. ls -og /lib/firmware/rtlwifi -rw-r--r-- 1 129304 2012-03-04 15:42 rtl8712u.bin ------ The 'menuconfig' on my version, 3.2.9, has only these choices for RTL staging devices: 8187SE 8192U 8192E 8712 (8192SU) No trace of an RTL8191S possibility. Maybe you can make more heads (or even tails) of it. Regards, -- Alex PS. Just to prevent any uncalled-for suspicions, this Rosewill device works smoothly and perfectly on Win XP (very same machine, different partition) and Win 7. Surprise, surprise. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html