I'm trying to get hostapd working on a RT3290 (pci-based) network adapter, and a Ubuntu 12.04.3 LTS release. I use the approach taken in How to setup an Access Point mode Wi-Fi Hotspot?

I verified with the "iw list" command that it has AP mode for acting as a access point.

When starting the hostapd daemon, I get the following error:

# sudo hostapd -d /etc/hostapd/hostapd.conf

Configuration file: /etc/hostapd/hostapd.conf

nl80211: Register Action command failed: ret=-19 (No such device)

nl80211: Register Action match - hexdump(len=1): 06

nl80211: Failed to register Action frame processing - ignore for now

nl80211: Add own interface ifindex 0

Could not read interface wlan0  flags: No such device

nl80211 driver initialization failed.

ELOOP: remaining socket: sock=4 eloop_data=0x8a5b900 user_data=0x8a5bea0 handler=0x807c5e0

ELOOP: remaining socket: sock=6 eloop_data=0x8a5dd30 user_data=(nil) handler=0x8086770

What can be wrong with this set-up?