How would I use a Trendnet TEW-648UBM wifi usb dongle in master mode to transform the Pi into an access point? (I am using Raspbian)
The dongle seems to work out of the box; it loads the
driver 8192cu, and can scan and connect to networks.
However, when i try to use it in master mode i get:
Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Operation not permitted.
The same error occurs when I use other
iwconfig commands, such as
I also tried to use an open source driver provided by Realtek, RTL8188C_8192C_USB_linux_v3.4.4_4749.20121105, but honestly I have no idea how to use it, and am afraid that if I install the driver, it will break the distribution
Following the advices received here, i found out that in the last wheezy the kernel module is ok, as well as wpa-supplicant (unless you want WPS support). The only things that have to be replaced are hostapd and the wireless-tools.
So simply uninstall wireless-tools and hostapd, then download the realtek package, and make/make install both wireless-tools and hostap
after, it will work as described in the tutorial linked by BigCowPi.
Just a note: using iwconfig directly now works for setting the card in master mode, but it still fails when using it to set the txpower. This might be a limitation of the driver, i don't know. I would appreciate if somebody could comment on that.