セキュアWiFi認証なし

lenovo T400にLinux Mint 17.2をインストールしました。 Intel 5100 AGNワイヤレスカードが取り付けられています。

私たちの大学には、ユーザー名/パスワードベースの認証を使用する安全でないゲストワイヤレスSSIDとWPA / WPA2セキュリティSSIDがあります。安全でないネットワークには簡単に接続できますが、WPA接続にはまったく接続できません。私のパスワードを尋ねて接続しようとした後、パスワードをもう一度尋ねるように進みます。

これは、マシンが稼働している期間、一時停止の有無などによって異なります。このOSをインストールした後からそうしました。

安全でない接続を切断し、安全なdmesgに接続しようとした直後：

sp4rg0n@sp4rg0n-ThinkPad-T400 ~ $ dmesg
...
[ 2899.302943] wlan0: deauthenticating from 08:cc:68:cc:fd:51 by local choice (Reason: 3=DEAUTH_LEAVING)
[ 2899.305487] cfg80211: Calling CRDA to update world regulatory domain
[ 2899.309223] cfg80211: World regulatory domain updated:
[ 2899.309227] cfg80211:  DFS Master region: unset
[ 2899.309229] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 2899.309232] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2899.309234] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2899.309236] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2899.309238] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2899.309239] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2913.499595] wlan0: authenticate with 08:cc:68:cc:fd:5f
[ 2913.502680] wlan0: send auth to 08:cc:68:cc:fd:5f (try 1/3)
[ 2913.523336] wlan0: authenticated
[ 2913.524051] wlan0: associate with 08:cc:68:cc:fd:5f (try 1/3)
[ 2913.628054] wlan0: associate with 08:cc:68:cc:fd:5f (try 2/3)
[ 2913.629384] wlan0: RX AssocResp from 08:cc:68:cc:fd:5f (capab=0x101 status=12 aid=0)
[ 2913.629390] wlan0: 08:cc:68:cc:fd:5f denied association (code=12)
[ 2913.918053] wlan0: authenticate with 08:cc:68:cd:01:3f
[ 2913.922846] wlan0: send auth to 08:cc:68:cd:01:3f (try 1/3)
[ 2914.022154] wlan0: authenticated
[ 2914.024064] wlan0: associate with 08:cc:68:cd:01:3f (try 1/3)
[ 2914.025595] wlan0: RX AssocResp from 08:cc:68:cd:01:3f (capab=0x101 status=12 aid=0)
[ 2914.025602] wlan0: 08:cc:68:cd:01:3f denied association (code=12)
[ 2914.231147] wlan0: authenticate with 08:cc:68:cc:cd:3f
[ 2914.234561] wlan0: send auth to 08:cc:68:cc:cd:3f (try 1/3)
[ 2914.260298] wlan0: authenticated
[ 2914.260569] wlan0: waiting for beacon from 08:cc:68:cc:cd:3f
[ 2914.368066] wlan0: associate with 08:cc:68:cc:cd:3f (try 1/3)
[ 2914.370491] wlan0: RX AssocResp from 08:cc:68:cc:cd:3f (capab=0x111 status=0 aid=1)
[ 2914.373564] wlan0: associated
[ 2914.373890] cfg80211: Calling CRDA for country: US
[ 2914.377564] cfg80211: Regulatory domain changed to country: US
[ 2914.377573] cfg80211:  DFS Master region: unset
[ 2914.377578] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 2914.377585] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm), (N/A)
[ 2914.377591] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm), (N/A)
[ 2914.377596] cfg80211:   (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 2914.377601] cfg80211:   (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 2914.377606] cfg80211:   (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (0 s)
[ 2914.377611] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm), (N/A)
[ 2914.377616] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
[ 2939.005918] wlan0: deauthenticating from 08:cc:68:cc:cd:3f by local  choice (Reason: 3=DEAUTH_LEAVING)
[ 2939.009798] cfg80211: Calling CRDA to update world regulatory domain
[ 2939.018975] cfg80211: World regulatory domain updated:
[ 2939.018985] cfg80211:  DFS Master region: unset
[ 2939.018990] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 2939.018997] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2939.019003] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2939.019008] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2939.019013] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2939.019018] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)

sp4rg0n@sp4rg0n-ThinkPad-T400 ~ $ lspci -nn | grep 0280
03:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection [8086:4237]

FWIW Wi-Fi管理者は、最初の試みでCA証明書が欠落していると文句を言いました。証明書の無視と選択という2つのオプションがあります。無視しました。

問題が何であるかを知っている人はいますか？よろしくお願いします。