On Thu, May 03, 2012 at 03:24:18PM +0800, Yuanle Song wrote: > 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
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