Dell Inspiron 9300 laptop with IPW2916ABG card
Vanilla linux 2.6.13 and 2.6.14.2, no difference
ipw2200 1.0.8 loaded as module, both in and outside kernel tree, no
difference, tried A+BG operation, A only operation and BG operation, no
difference, tried hwcrypto=3D0 and hwcrypto=3D1, no difference.
ieee80211 1.1.6 patched into kernel (standalone doesn't matter).=20
wpa_supplicant 0.4.6-1
Linksys WAP55AG access point (A+BG), both configured, latest available
firmware, tried both separate SSID's for the A and BG and the same,
makes no difference. Running with WPA, TKIP and CCMP (no difference)
With this setup I get disassociations every few minutes. The access
point is about four meters away, reception always > 85%. There are no
access points in sight that use the same or adjacent channel(s).
wpa_supplicant in debug says this at such events, which imho is very
remarkable:
- Wireless event: cmd=3D0x8b15 len=3D20
- Wireless event: new AP: 00:00:00:00:00:00
- Setting scan request: 0 sec 100000 usec
- Added BSSID 00:12:17:a8:5f:0d into blacklist
A new access point 00:00:00:00:00:00???
And why is my own access point blacklisted???
iwevent says, at the same time:
- 12:44:55.011704 wlan0 New Access Point/Cell
address:00:00:00:00:00:00
- 12:44:55.018742 wlan0 New Access Point/Cell
address:00:00:00:00:00:00
- 12:44:58.128802 wlan0 Set Mode:Managed
- 12:44:58.128860 wlan0 Set ESSID:"1447NC49A"
- 12:44:59.785880 wlan0 New Access Point/Cell
address:00:12:17:A8:5F:0D
The messages about a new access point being detected (which actually is
not true because I am in a very static environment, it's always the same
set of access points being visible, none of them "A" besides my own)
lead me to the suspicion of a bug in the ipw2200 driver and not the
wpa_supplicant.
FWIW various outputs:
wlan0 IEEE 802.11a ESSID:"1447NC49A"
Mode:Managed Frequency:5.18 GHz Access Point:
00:12:17:A8:5F:0D
Bit Rate=3D54 Mb/s Tx-Power=3D20 dBm
Retry limit:7 RTS thr:off Fragment thr:off
Encryption key:... Security mode:open
Power Management:off
Link Quality=3D90/100 Signal level=3D-39 dBm Noise level=3D-83 =
dBm
Rx invalid nwid:0 Rx invalid crypt:7 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
dmesg:
ACPI: PCI Interrupt 0000:03:03.0[A] -> GSI 17 (level, low) -> IRQ 209
ipw2200: Detected Intel PRO/Wireless 2915ABG Network Connection
wlan0: NETDEV_TX_BUSY returned; driver should report queue full via
ieee_device->is_queue_full.
CCMP: replay detected: STA=3D00:12:17:a8:5f:0d previous PN 000000000000
received PN 000000000000
wlan0: no IPv6 routers present
ipw2200: Unknown notification: subtype=3D40,flags=3D0xa0,size=3D40
CCMP: replay detected: STA=3D00:12:17:a8:5f:0d previous PN 000000000000
received PN 000000000000
ipw2200: Unknown notification: subtype=3D40,flags=3D0xa0,size=3D40
CCMP: replay detected: STA=3D00:12:17:a8:5f:0d previous PN 000000000000
received PN 000000000000
CCMP: replay detected: STA=3D00:12:17:a8:5f:0d previous PN 000000000000
received PN 000000000000
ipw2200: Unknown notification: subtype=3D40,flags=3D0xa0,size=3D40
CCMP: replay detected: STA=3D00:12:17:a8:5f:0d previous PN 000000000000
received PN 000000000000
ipw2200: Unknown notification: subtype=3D40,flags=3D0xa0,size=3D40
ipw2200: Unknown notification: subtype=3D40,flags=3D0xa0,size=3D40
CCMP: replay detected: STA=3D00:12:17:a8:5f:0d previous PN 000000000000
received PN 000000000000
Please note that the "replay" messages do not coincide with the
disconnects.
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