I currently need an extra trigger by changing the channel after "ifconfig up" to see any output in monitor mode from ath5k, e.g. ifconfig wlan0 down iwconfig wlan0 mode monitor channel 1 ifconfig wlan0 up # no output by tcpdump -n -i wlan0 in another xterm iwconfig wlan0 channel 2 # tcpdump output starts The second "iwconfig" call must specify a channel different to the first one. The above sequence without the second "iwconfig" works fine with a RTL8187 device. I'm running compat-wireless-2.6: master-2009-07-26-11-g83c091c wireless-testing: v2.6.31-rc4-29204-g6b3a8c9 on top of a 2.6.30 kernel. The WLAN NIC is a: 02:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01), PCI id: 168c:001c (rev 01) ath5k identifies it as: ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70) It's not a big issue, but a bit annoying sometimes. -- 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