Found a potential solution for EDIMAX wifi issues on BBB with Angstrom

So, here is my success story :slight_smile:

I tried a few days to get an EDIMAX 7811UN to work on my BBB with Angstrom. The built-in rtl8192cu did not work, compiling realtek driver from source was not helpful as well. An upgrade to image-2013.09.04 changed nothing.

The signal level was very weak and connection was lost, as soon BBB was 3 meters far from my AP.

Finally I got it out with disabling of HDMI.
My thoughts were:
why is there so much over HDMI in dmesg?

HDMI port is near USB …

So, what… I’ve mount the FAT partiotion and change the uEnv.txt to:

optargs=quiet capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN


Now, EDIMAX works without usb extension cable, seems to be stable and I can put my board in an other room :slight_smile:

You should use an extension cable. A si have said on the WIKI, the antennas are very weak on these and the noise from the board can interfere with the signal. I would use the short cable or get one with a real antenna on it.