Xose Vazquez Perez wrote: > 0x0846, 0x9012 NETGEAR WNDA4100 N900 Wireless Dual Band USB Adapter I'm testing the WNDA4100 with torvalds/linux.git and as of a day or two ago and wpa_supplicant-2.0. I haven't measured throughput. Latency is really bad for interactive connections, but at least the packets are flowing on all bands. Yay! Ping to the access point is around 3 ms with the odd 20+ ms when the kernel goes off to do something else. Here's my problem: After wpa_supplicant -Dnl80211 -ddd sees scan results and says "SME: Send 20/40 BSS Coexistence to $my_ap" and that frame is acked, wpa_supplicant seems to receive a "link up" event which causes it to delete the existing association for no good reason. It blacklists my ap so I need to reconnect manually with iw dev wlan1 connect -w $ssid. (Oh, and iw dev wlan1 connect -w consistently says "Unspecified failure" even though the connection is established fine by wpa_supplicant. Other problem though.) My AP is hidden, so it isn't included in the scan results. But wpa_supplicant is connected to it fine when the scan results arrive. wpa_supplicant does *not* disconnect if I manually initiate a scan when there is no other link activity, this only happens for "Scan requested (ret=0) - scan timeout 30 seconds" scans. --8<-- wpa_supplicant -ddd log snippet with MAC address replaced with $my_ap. wlan1: New scan results available SME: Send 20/40 BSS Coexistence to $my_ap nl80211: Send Action frame (ifindex=6, freq=2417 MHz wait=0 ms no_cck=0) nl80211: CMD_FRAME freq=2417 wait=0 no_cck=0 no_ack=0 offchanok=1 nl80211: Frame TX command accepted; cookie 0xffff880039f70700 wlan1: Checking for other virtual interfaces sharing same radio (phy1) in event_scan_results nl80211: Event message available nl80211: MLME event 60 nl80211: MLME event frame - hexdump(len=34): d0 00 da 00 $my_ap 84 1b 5e 7e e1 bc $my_ap d0 72 04 00 48 01 00 49 03 00 06 05 nl80211: Frame TX status event nl80211: Action TX status: cookie=0ffff880039f70700 (match) (ack=1) wlan1: Event TX_STATUS (18) received wlan1: EVENT_TX_STATUS dst=$my_ap type=0 stype=13 RTM_NEWLINK: operstate=1 ifi_flags=0x1003 ([UP]) RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan1' added nl80211: if_removed already cleared - ignore event nl80211: Event message available nl80211: Delete station $my_ap nl80211: Event message available nl80211: MLME event 39 nl80211: MLME event frame - hexdump(len=26): c0 00 00 00 $my_ap 84 1b 5e 7e e1 bc $my_ap 00 00 04 00 nl80211: Deauthenticate event wlan1: Event DEAUTH (12) received wlan1: Deauthentication notification wlan1: * reason 4 (locally generated) wlan1: * address $my_ap Deauthentication frame IE(s) - hexdump(len=0): [NULL] wlan1: CTRL-EVENT-DISCONNECTED bssid=$my_ap reason=4 locally_generated=1 wlan1: Auto connect enabled: try to reconnect (wps=0 wpa_state=9) wlan1: Setting scan request: 0 sec 100000 usec Added BSSID $my_ap into blacklist wlan1: Blacklist count 1 --> request scan in 100 ms wlan1: Setting scan request: 0 sec 100000 usec wlan1: Disconnect event - remove keys wpa_driver_nl80211_set_key: ifindex=6 alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0 wpa_driver_nl80211_set_key: ifindex=6 alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0 wpa_driver_nl80211_set_key: ifindex=6 alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0 wpa_driver_nl80211_set_key: ifindex=6 alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0 wpa_driver_nl80211_set_key: ifindex=6 alg=0 addr=0x112f828 key_idx=0 set_tx=0 seq_len=0 key_len=0 addr=$my_ap wlan1: State: COMPLETED -> DISCONNECTED -->8-- What's the problem? wpa_supplicant or rt2800usb or mac80211 or all of the above? Thanks //Peter -- 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