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wpa_supplicant drops connection frequently
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Yuanle Song
May 3, 2012, 4:30:01 AM5/3/12
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In the last two days, my wireless connection is very unstable. It drops
every few minutes and when it is connected, it's very slow and
unusable. Could you help me to debug this problem?
Here is the hardware, software and network info:
- thinkpad x201 with Intel Corporation Centrino Advanced-N 6200
(used non-free firmware)
- Debian GNU/Linux 6.0.4 (squeeze)
- wpasupplicant 0.6.10-2.1
- wireless AP with SSID "1216" is provided on a TP-LINK router.
using WPA2-PSK security.
Here is some of the non-debug outputs:
- seesion 1
# /sbin/wpa_supplicant -i wlan0 -c /home/sylecn/texts/config/wpa_current.conf
Trying to associate with d8:5d:4c:58:2a:32 (SSID='1216' freq=2437 MHz)
Associated with d8:5d:4c:58:2a:32
WPA: Key negotiation completed with d8:5d:4c:58:2a:32 [PTK=CCMP GTK=TKIP]
CTRL-EVENT-CONNECTED - Connection to d8:5d:4c:58:2a:32 completed (auth) [id=2 id_str=nantong-1216]
WPA: Invalid EAPOL-Key MIC when using TPTK - ignoring TPTK
WPA: Invalid EAPOL-Key MIC - dropping packet
- session 2
# /sbin/wpa_supplicant -i wlan0 -c /home/sylecn/texts/config/wpa_current.conf
Trying to associate with d8:5d:4c:58:2a:32 (SSID='1216' freq=2437 MHz)
Associated with d8:5d:4c:58:2a:32
WPA: Key negotiation completed with d8:5d:4c:58:2a:32 [PTK=CCMP GTK=TKIP]
CTRL-EVENT-CONNECTED - Connection to d8:5d:4c:58:2a:32 completed (reauth) [id=2 id_str=nantong-1216]
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
WPA: Invalid EAPOL-Key MIC - dropping packet
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
google did not turn too much helpful information, but did suggest a
debug run of wpa_supplicant. So I did a debug run using -ddt and also
run iwevent at the same time. the output is attached in this email.
I have been on this network for a few months, with no problem like this
before. Other laptops on this network running Windows XP/7 have no such
problem, i.e. their wireless connection is stable just as before.
I have also attached my wpa_supplicant.conf with passwords removed if
that is helpful. I haven't changed it recently.
I have also used to ping to test the network. packet loss and big
latency (800ms+) is very usual, which reflects why it's just unusable
even when connected.
Thanks,
Yuanle
every few minutes and when it is connected, it's very slow and
unusable. Could you help me to debug this problem?
Here is the hardware, software and network info:
- thinkpad x201 with Intel Corporation Centrino Advanced-N 6200
(used non-free firmware)
- Debian GNU/Linux 6.0.4 (squeeze)
- wpasupplicant 0.6.10-2.1
- wireless AP with SSID "1216" is provided on a TP-LINK router.
using WPA2-PSK security.
Here is some of the non-debug outputs:
- seesion 1
# /sbin/wpa_supplicant -i wlan0 -c /home/sylecn/texts/config/wpa_current.conf
Trying to associate with d8:5d:4c:58:2a:32 (SSID='1216' freq=2437 MHz)
Associated with d8:5d:4c:58:2a:32
WPA: Key negotiation completed with d8:5d:4c:58:2a:32 [PTK=CCMP GTK=TKIP]
CTRL-EVENT-CONNECTED - Connection to d8:5d:4c:58:2a:32 completed (auth) [id=2 id_str=nantong-1216]
WPA: Invalid EAPOL-Key MIC when using TPTK - ignoring TPTK
WPA: Invalid EAPOL-Key MIC - dropping packet
- session 2
# /sbin/wpa_supplicant -i wlan0 -c /home/sylecn/texts/config/wpa_current.conf
Trying to associate with d8:5d:4c:58:2a:32 (SSID='1216' freq=2437 MHz)
Associated with d8:5d:4c:58:2a:32
WPA: Key negotiation completed with d8:5d:4c:58:2a:32 [PTK=CCMP GTK=TKIP]
CTRL-EVENT-CONNECTED - Connection to d8:5d:4c:58:2a:32 completed (reauth) [id=2 id_str=nantong-1216]
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
WPA: Invalid EAPOL-Key MIC - dropping packet
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
WPA: EAPOL-Key Replay Counter did not increase - dropping packet
google did not turn too much helpful information, but did suggest a
debug run of wpa_supplicant. So I did a debug run using -ddt and also
run iwevent at the same time. the output is attached in this email.
I have been on this network for a few months, with no problem like this
before. Other laptops on this network running Windows XP/7 have no such
problem, i.e. their wireless connection is stable just as before.
I have also attached my wpa_supplicant.conf with passwords removed if
that is helpful. I haven't changed it recently.
I have also used to ping to test the network. packet loss and big
latency (800ms+) is very usual, which reflects why it's just unusable
even when connected.
Thanks,
Yuanle
Chris Bannister
May 6, 2012, 2:10:01 AM5/6/12
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