[ath9k-devel] ath9k WPA2-PEAP MSCHAPV2 Connectivity issue

[James Hogan <jhogan22.liberty@gmail.com>]

    Hello, I am having an issue connecting to my University's network.
It seems that I can connect to the network just fine, but upon trying to
surf the internet, I get about 20-30 seconds of service and then all of
a sudden, I can no longer reach the internet. I have been dealing with
this for a few weeks now and have contacted the gentoo community to try
and get some assistance from them, but it doesn't seem that they can
help me right now. I have tried this on my laptop which is also running
an ath9k NIC under fedora and I am having the same issue. I've also
contacted my I.T. department which expressed to me that they have been
having issues with Atheros cards as well. So, for the sake of classes, I
switched my laptop over to windows until I can find a way to get this
resolved, and I am getting great service running windows 8; before doing
that I have tried fresh installs and wiping all of my settings to make
sure that it is not on my end.

On my desktop I am using a TP-Link TL-WDN4800 and I am able to connect
to WPA2-PSK and other non-enterprise networks just fine. I've done a
"iwlist wlan0 scan" and the following is the output I received regarding
the network:

          Cell 04 - Address: 00:24:6C:5E:C4:03
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=53/70  Signal level=-57 dBm 
                    Encryption key:on
                    ESSID:"Liberty-Secure"
                    Bit Rates:2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s; 11 Mb/s
                              12 Mb/s; 18 Mb/s; 24 Mb/s
                    Bit Rates:36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000030023b991c
                    Extra: Last beacon: 20ms ago
                    IE: Unknown: 000E4C6962657274792D536563757265
                    IE: Unknown: 0108840B0C1216182430
                    IE: Unknown: 030101
                    IE: Unknown: 2A0100
                    IE: Unknown: 320348606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown:
2D1A4C101BFFFF000000000000000000000000000000000000000000
                    IE: Unknown:
3D1601001B00000000000000000000000000000000000000
                    IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00

          Cell 07 - Address: 00:1A:1E:26:29:72
                    Channel:48
                    Frequency:5.24 GHz (Channel 48)
                    Quality=61/70  Signal level=-49 dBm 
                    Encryption key:on
                    ESSID:"Liberty-Secure"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000015e96f0925
                    Extra: Last beacon: 20ms ago
                    IE: Unknown: 000E4C6962657274792D536563757265
                    IE: Unknown: 01088C129824B048606C
                    IE: Unknown: 030130
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : 802.1x
                    IE: Unknown:
2D1A4E001BFFFF000000000000000000000000000000000000000000
                    IE: Unknown:
3D1630071B00000000000000000000000000000000000000
                    IE: Unknown:
DD180050F2020101800003A4000027A4000042435E0062322F00

The network is setup with WPA2-PEAP MSCHAPV2 and all I need to log in is
a simple username and password. When connecting, dmesg reads:

[36675.408026] cfg80211: Calling CRDA to update world regulatory domain
[36675.410364] cfg80211: World regulatory domain updated:
[36675.410365] cfg80211:   (start_freq - end_freq @ bandwidth),
(max_antenna_gain, max_eirp)
[36675.410367] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
[36675.410368] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
[36675.410370] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300
mBi, 2000 mBm)
[36675.410371] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
[36675.410372] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
[36676.219228] wlan0: authenticate with 00:1a:1e:26:29:71
[36676.229755] wlan0: send auth to 00:1a:1e:26:29:71 (try 1/3)
[36676.235179] wlan0: authenticated
[36676.238745] wlan0: associate with 00:1a:1e:26:29:71 (try 1/3)
[36676.247702] wlan0: RX AssocResp from 00:1a:1e:26:29:71 (capab=0x401
status=0 aid=1)
[36676.247738] wlan0: associated

and I am getting high "Tx excessive retries" and "Invalid misc"

wlan0     IEEE 802.11abgn  ESSID:"Liberty-Secure" 
          Mode:Managed  Frequency:2.412 GHz  Access Point:
00:24:6C:5E:C4:03  
          Bit Rate=65 Mb/s   Tx-Power=20 dBm  
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=52/70  Signal level=-58 dBm 
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:XXX  Invalid misc:XXX   Missed beacon:0

I have also tried many of the "fixes" that I have found online such as
setting nohwcrypt=1, messing with the bit rate, power, txpower, RTS
threshold and Fragmentation Threshold. But none of these or combination
of these seems to help with the connection. Would anyone have an idea of
why I am having this connectivity issue and how it could be fixed?