On Mon, May 23, 2016 at 12:49:56PM +0300, Mihai Popescu wrote:
> Hello,
> 
> I have this usb2.0 dongle, TP-LINK TL-WN722N wireless device. I've got
> it after I installed OpenBSD so I have run fw_update -a for firmware.
> Still I get this error athn0: could not load firmware after plugin.
> The manual page says it should be an error number in message, but it
> is not.
> 
> Wiki chipset page says it contains Atheros AR9002U as a chipset and
> AR9271 as a wireless chipset. The manual says support exists for
> AR9271, but AR9002U is not mentioned. The device shows in pictures
> only one chip marked AR9271.
> In one CVS message back in 2010 by Daniel Bergamini, it says AR9002U
> is supported along many others.
> Should I consider it as non supported, please?
> 
> Thanks

I believe this is a power management issue with ehci(4).
Your device doesn't get enough juice to power up.
See http://marc.info/?l=openbsd-tech&m=143645936727569&w=2

The device will probably work just fine on a different machine.

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