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#1 2012-08-07 00:03:16

flaminigo
Member
Registered: 2012-08-06
Posts: 2

[SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

Updates
There must be something wrong with the driver in kernel. So I tried to replace my kernel with the one in the testing repository. 

Original kernel version is 3.4.7-1
Updated kernel version is 3.5.0-2

The driver in the new kernel works correctly. My laptop is Thinkpad T420. The wireless controller is 8188ce ( shown as `Thinkpad bgn' when you are configuring the laptop on lenovo website). This chip is infamous and very unfriendly to Linux users. Remember to choose the Intel centrino chip when buying a new laptop.

I also tried a USB wireless adapter. The chip is 819xSU. The driver in kernel to handle this chip is r8172u, which is still staging in Linux wireless database. So before you try a USB adapter, make sure your Linux has native driver to support it. wpa_supplicant cannot work well with ndiswrapper.

Finally, I want to say `networkmanager' is XXXXXXXX. I plan to write a set of bash scripts which utilizes  wpa_supplicant directly to connect wireless network. Hopefully I can find some time this summer.




Original problem
My wpa_supplicant config file is 

 
network={
       ssid="XXXXXX"
       scan_ssid=1
       key_mgmt=WPA-EAP
       pairwise=CCMP TKIP
       group=CCMP TKIP
       eap=PEAP
       identity="username"
       password="password"
       phase1="peaplabel=0"
       phase2="auth=MSCHAPV2"
}

I launch wpa_supplicant using 

$ sudo wpa_supplicant -Dnl80211 -iwlan0 -c wpa.conf 
Password: 
wlan0: SME: Trying to authenticate with 00:24:6c:e4:ff:a0 (SSID='xxxxx-wpa' freq=2462 MHz)
wlan0: Trying to associate with 00:24:6c:e4:ff:a0 (SSID='xxxxx-wpa' freq=2462 MHz)
wlan0: Associated with 00:24:6c:e4:ff:a0
wlan0: Authentication with 00:24:6c:e4:ff:a0 timed out.
wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
wlan0: SME: Trying to authenticate with 00:24:6c:e4:ff:e0 (SSID='xxxxxx-wpa' freq=2412 MHz)
wlan0: Trying to associate with 00:24:6c:e4:ff:e0 (SSID='xxxxxx-wpa' freq=2412 MHz)
wlan0: Associated with 00:24:6c:e4:ff:e0

wpa_supplicant debug info is 

wpa_supplicant v1.0
Initializing interface 'wlan0' conf '/etc/wpa_supplicant/wpa.conf' driver 'nl80211' ctrl_interface 'N/A' bridge 'N/A'
Configuration file '/etc/wpa_supplicant/wpa.conf' -> '/etc/wpa_supplicant/wpa.conf'
Reading configuration file '/etc/wpa_supplicant/wpa.conf'
Line: 1 - start of a new network block
ssid - hexdump_ascii(len=12):
     74 61 6d 75 6c 69 6e 6b 2d 77 70 61               xxxx-wpa    
scan_ssid=1 (0x1)
key_mgmt: 0x1
pairwise: 0x18
group: 0x18
eap methods - hexdump(len=16): 00 00 00 00 19 00 00 00 00 00 00 00 00 00 00 00
identity - hexdump_ascii(len=11):
     71 75 65 65 6e 69 65 73 6e 6f 77                  username
password - hexdump_ascii(len=10): [REMOVED]
phase1 - hexdump_ascii(len=11):
     70 65 61 70 6c 61 62 65 6c 3d 30                  peaplabel=0     
phase2 - hexdump_ascii(len=13):
     61 75 74 68 3d 4d 53 43 48 41 50 56 32            auth=MSCHAPV2   
Priority group 0
   id=0 ssid='xxxx-wpa'
nl80211: interface wlan0 in phy phy0
rfkill: initial event: idx=0 type=2 op=0 soft=0 hard=0
rfkill: initial event: idx=1 type=2 op=0 soft=0 hard=0
rfkill: initial event: idx=2 type=1 op=0 soft=0 hard=0
nl80211: Set mode ifindex 3 iftype 2 (STATION)
netlink: Operstate: linkmode=1, operstate=5
nl80211: Using driver-based off-channel TX
nl80211: driver param='(null)'
nl80211: Regulatory information - country=00
nl80211: 2402-2472 @ 40 MHz
nl80211: 2457-2482 @ 20 MHz
nl80211: 2474-2494 @ 20 MHz
nl80211: 5170-5250 @ 40 MHz
nl80211: 5735-5835 @ 40 MHz
nl80211: Added 802.11b mode based on 802.11g information
wlan0: Own MAC address: 68:a3:c4:21:17:2c
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
wlan0: RSN: flushing PMKID list in the driver
nl80211: Flush PMKIDs
wlan0: Setting scan request: 0 sec 100000 usec
WPS: Set UUID for interface wlan0
WPS: UUID based on MAC address - hexdump(len=16): f2 cf 80 ce db b4 58 61 9f 0e 46 a2 11 a3 48 91
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: Supplicant port status: Unauthorized
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
EAPOL: Supplicant port status: Unauthorized
EAPOL: Supplicant port status: Unauthorized
wlan0: Added interface wlan0
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
nl80211: if_removed already cleared - ignore event
wlan0: State: DISCONNECTED -> SCANNING
Scan SSID - hexdump_ascii(len=12):
     74 61 6d 75 6c 69 6e 6b 2d 77 70 61               xxxx-wpa    
wlan0: Starting AP scan for wildcard SSID
nl80211: Scan SSID - hexdump_ascii(len=12):
     74 61 6d 75 6c 69 6e 6b 2d 77 70 61               xxxx-wpa    
nl80211: Scan SSID - hexdump_ascii(len=0): [NULL]
Scan requested (ret=0) - scan timeout 10 seconds
nl80211: Event message available
nl80211: Scan trigger
EAPOL: disable timer tick
EAPOL: Supplicant port status: Unauthorized
nl80211: Event message available
nl80211: New scan results available
wlan0: Event SCAN_RESULTS (3) received
nl80211: Received scan results (13 BSSes)
wlan0: BSS: Start scan result update 1
wlan0: BSS: Add new id 0 BSSID 00:24:6c:60:2a:40 SSID 'xxxx-wpa'
wlan0: BSS: Add new id 1 BSSID 00:24:6c:60:2a:41 SSID 'xxxx-guest'
wlan0: BSS: Add new id 2 BSSID 00:24:6c:e4:ff:a1 SSID 'xxxx-guest'
wlan0: BSS: Add new id 3 BSSID 00:24:6c:e4:ff:a2 SSID 'eduroam'
wlan0: BSS: Add new id 4 BSSID 00:24:6c:e4:ff:a0 SSID 'xxxx-wpa'
wlan0: BSS: Add new id 5 BSSID 00:24:6c:d8:3e:e1 SSID 'xxxx-guest'
wlan0: BSS: Add new id 6 BSSID 00:24:6c:d0:4d:01 SSID 'xxxx-guest'
wlan0: BSS: Add new id 7 BSSID 00:24:6c:d0:4d:02 SSID 'eduroam'
wlan0: BSS: Add new id 8 BSSID 00:24:6c:60:2a:42 SSID 'eduroam'
wlan0: BSS: Add new id 9 BSSID 00:24:6c:e4:ff:e0 SSID 'xxxx-wpa'
wlan0: BSS: Add new id 10 BSSID 00:24:6c:e4:ff:e2 SSID 'eduroam'
wlan0: BSS: Add new id 11 BSSID 00:24:6c:d0:4d:00 SSID 'xxxx-wpa'
wlan0: BSS: Add new id 12 BSSID 00:24:6c:e4:ff:e1 SSID 'xxxx-guest'
wlan0: New scan results available
wlan0: Selecting BSS from priority group 0
wlan0: 0: 00:24:6c:60:2a:40 ssid='xxxx-wpa' wpa_ie_len=22 rsn_ie_len=20 caps=0x431 level=-51
wlan0:    selected based on RSN IE
wlan0:    selected BSS 00:24:6c:60:2a:40 ssid='xxxx-wpa'
wlan0: Request association: reassociate: 0  selected: 00:24:6c:60:2a:40  bssid: 00:00:00:00:00:00  pending: 00:00:00:00:00:00  wpa_state: SCANNING
wlan0: Automatic auth_alg selection: 0x1
wlan0: RSN: using IEEE 802.11i/D9.0
wlan0: WPA: Selected cipher suites: group 16 pairwise 16 key_mgmt 1 proto 2
WPA: set AP WPA IE - hexdump(len=24): dd 16 00 50 f2 01 01 00 00 50 f2 04 01 00 00 50 f2 04 01 00 00 50 f2 01
WPA: set AP RSN IE - hexdump(len=22): 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 01 00 00
wlan0: WPA: using GTK CCMP
wlan0: WPA: using PTK CCMP
wlan0: WPA: using KEY_MGMT 802.1X
WPA: Set own WPA IE default - hexdump(len=22): 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 01 00 00
wlan0: Cancelling scan request
wlan0: SME: Trying to authenticate with 00:24:6c:60:2a:40 (SSID='xxxx-wpa' freq=2412 MHz)
wlan0: No keys have been configured - skip key clearing
wlan0: State: SCANNING -> AUTHENTICATING
EAPOL: External notification - EAP success=0
EAPOL: Supplicant port status: Unauthorized
EAPOL: External notification - EAP fail=0
EAPOL: Supplicant port status: Unauthorized
EAPOL: External notification - portControl=Auto
EAPOL: Supplicant port status: Unauthorized
nl80211: Authenticate (ifindex=3)
  * bssid=00:24:6c:60:2a:40
  * freq=2412
  * SSID - hexdump_ascii(len=12):
     74 61 6d 75 6c 69 6e 6b 2d 77 70 61               xxxx-wpa    
  * IEs - hexdump(len=0): [NULL]
  * Auth Type 0
nl80211: Authentication request send successfully
RSN: Ignored PMKID candidate without preauth flag
RSN: Ignored PMKID candidate without preauth flag
RSN: Ignored PMKID candidate without preauth flag
RSN: Ignored PMKID candidate without preauth flag
wlan0: Checking for other virtual interfaces sharing same radio (phy0) in event_scan_results
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
nl80211: if_removed already cleared - ignore event
nl80211: Event message available
nl80211: New station 00:24:6c:60:2a:40
nl80211: Event message available
nl80211: MLME event 37
nl80211: MLME event frame - hexdump(len=30): b0 08 30 00 68 a3 c4 21 17 2c 00 24 6c 60 2a 40 00 24 6c 60 2a 40 c0 28 00 00 02 00 00 00
wlan0: Event AUTH (11) received
wlan0: SME: Authentication response: peer=00:24:6c:60:2a:40 auth_type=0 status_code=0
SME: Authentication response IEs - hexdump(len=0): [NULL]
wlan0: Trying to associate with 00:24:6c:60:2a:40 (SSID='xxxx-wpa' freq=2412 MHz)
wlan0: State: AUTHENTICATING -> ASSOCIATING
wpa_driver_nl80211_set_operstate: operstate 0->0 (DORMANT)
netlink: Operstate: linkmode=-1, operstate=5
WPA: set own WPA/RSN IE - hexdump(len=22): 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 01 00 00
nl80211: Associate (ifindex=3)
  * bssid=00:24:6c:60:2a:40
  * freq=2412
  * SSID - hexdump_ascii(len=12):
     74 61 6d 75 6c 69 6e 6b 2d 77 70 61               xxxx-wpa    
  * IEs - hexdump(len=22): 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 01 00 00
  * pairwise=0xfac04
  * group=0xfac04
nl80211: Association request send successfully
nl80211: Event message available
nl80211: MLME event 38
nl80211: MLME event frame - hexdump(len=116): 10 08 30 00 68 a3 c4 21 17 2c 00 24 6c 60 2a 40 00 24 6c 60 2a 40 d0 28 31 04 00 00 01 c0 01 06 98 24 b0 c8 e0 ec 2d 1a 4c 50 03 ff 00 00 00 00 00 00 00 00 00 96 00 01 00 00 00 00 00 00 00 00 00 00 3d 16 06 00 00 00 00 00 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 dd 18 00 50 f2 02 01 01 80 00 03 a4 00 00 27 a4 00 00 42 43 5e 00 62 32 2f 00
wlan0: Event ASSOC (0) received
wlan0: Association info event
resp_ies - hexdump(len=86): 01 06 98 24 b0 c8 e0 ec 2d 1a 4c 50 03 ff 00 00 00 00 00 00 00 00 00 96 00 01 00 00 00 00 00 00 00 00 00 00 3d 16 06 00 00 00 00 00 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 dd 18 00 50 f2 02 01 01 80 00 03 a4 00 00 27 a4 00 00 42 43 5e 00 62 32 2f 00
wlan0: freq=2412 MHz
wlan0: State: ASSOCIATING -> ASSOCIATED
wpa_driver_nl80211_set_operstate: operstate 0->0 (DORMANT)
netlink: Operstate: linkmode=-1, operstate=5
wlan0: Associated to a new BSS: BSSID=00:24:6c:60:2a:40
wlan0: No keys have been configured - skip key clearing
wlan0: Associated with 00:24:6c:60:2a:40
wlan0: WPA: Association event - clear replay counter
wlan0: WPA: Clear old PTK
EAPOL: External notification - portEnabled=0
EAPOL: Supplicant port status: Unauthorized
EAPOL: External notification - portValid=0
EAPOL: Supplicant port status: Unauthorized
EAPOL: External notification - portEnabled=1
EAPOL: SUPP_PAE entering state CONNECTING
EAPOL: enable timer tick
EAPOL: SUPP_BE entering state IDLE
EAP: EAP entering state INITIALIZE
EAP: EAP entering state IDLE
wlan0: Setting authentication timeout: 10 sec 0 usec
wlan0: Cancelling scan request
RTM_NEWLINK: operstate=0 ifi_flags=0x11003 ([UP][LOWER_UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
nl80211: if_removed already cleared - ignore event
RTM_NEWLINK: operstate=0 ifi_flags=0x11003 ([UP][LOWER_UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
nl80211: if_removed already cleared - ignore event
RTM_NEWLINK: operstate=0 ifi_flags=0x11003 ([UP][LOWER_UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
nl80211: if_removed already cleared - ignore event
nl80211: Event message available
nl80211: Ignore connect event (cmd=46) when using userspace SME
EAPOL: startWhen --> 0
EAPOL: SUPP_PAE entering state CONNECTING
EAPOL: txStart
TX EAPOL: dst=00:24:6c:60:2a:40
TX EAPOL - hexdump(len=4): 01 01 00 00
wlan0: Authentication with 00:24:6c:60:2a:40 timed out.
Added BSSID 00:24:6c:60:2a:40 into blacklist
wpa_driver_nl80211_disassociate
wlan0: No keys have been configured - skip key clearing
wlan0: State: ASSOCIATED -> DISCONNECTED
wpa_driver_nl80211_set_operstate: operstate 0->0 (DORMANT)
netlink: Operstate: linkmode=-1, operstate=5
EAPOL: External notification - portEnabled=0
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: Supplicant port status: Unauthorized
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
EAPOL: Supplicant port status: Unauthorized
EAPOL: External notification - portValid=0
EAPOL: Supplicant port status: Unauthorized
wlan0: Setting scan request: 1 sec 0 usec
EAPOL: Supplicant port status: Unauthorized
nl80211: Event message available
nl80211: Delete station 00:24:6c:60:2a:40
nl80211: Event message available
nl80211: MLME event 40
nl80211: MLME event frame - hexdump(len=26): a0 00 00 00 00 24 6c 60 2a 40 68 a3 c4 21 17 2c 00 24 6c 60 2a 40 00 00 03 00
wlan0: Event DISASSOC (1) received
wlan0: Disassociation notification
wlan0:  * reason 3
wlan0:  * address 00:24:6c:60:2a:40
Disassociation frame IE(s) - hexdump(len=0): [NULL]
wlan0: SME: Disassociation event received
wlan0: SME: Deauthenticate to clear driver state
wpa_driver_nl80211_deauthenticate(addr=00:24:6c:60:2a:40 reason_code=3)
wlan0: WPA: Auto connect enabled: try to reconnect (wps=0)
Added BSSID 00:00:00:00:00:00 into blacklist
wlan0: Not rescheduling scan to ensure that specific SSID scans occur
wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
wlan0: Disconnect event - remove keys
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=0x2585760 key_idx=0 set_tx=0 seq_len=0 key_len=0
   addr=00:00:00:00:00:00
wlan0: State: DISCONNECTED -> DISCONNECTED
wpa_driver_nl80211_set_operstate: operstate 0->0 (DORMANT)
netlink: Operstate: linkmode=-1, operstate=5
EAPOL: External notification - portEnabled=0
EAPOL: Supplicant port status: Unauthorized
EAPOL: External notification - portValid=0
EAPOL: Supplicant port status: Unauthorized
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
nl80211: if_removed already cleared - ignore event
RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan0' added
nl80211: if_removed already cleared - ignore event
nl80211: Event message available
nl80211: Ignore disconnect event when using userspace SME
nl80211: Event message available
nl80211: MLME event 39
nl80211: MLME event frame - hexdump(len=26): c0 00 00 00 00 24 6c 60 2a 40 68 a3 c4 21 17 2c 00 24 6c 60 2a 40 00 00 03 00
wlan0: Event DEAUTH (12) received
wlan0: Deauthentication notification
wlan0:  * reason 3
wlan0:  * address 00:24:6c:60:2a:40
Deauthentication frame IE(s) - hexdump(len=0): [NULL]
wlan0: WPA: Auto connect enabled: try to reconnect (wps=0)
BSSID 00:00:00:00:00:00 blacklist count incremented to 2
wlan0: Not rescheduling scan to ensure that specific SSID scans occur
wlan0: CTRL-EVENT-DISCONNECTED bssid=00:00:00:00:00:00 reason=3
wlan0: Disconnect event - remove keys
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 alg=0 addr=0x2585760 key_idx=0 set_tx=0 seq_len=0 key_len=0
   addr=00:00:00:00:00:00
wlan0: State: DISCONNECTED -> DISCONNECTED
wpa_driver_nl80211_set_operstate: operstate 0->0 (DORMANT)
netlink: Operstate: linkmode=-1, operstate=5
EAPOL: External notification - portEnabled=0
EAPOL: Supplicant port status: Unauthorized
EAPOL: External notification - portValid=0
EAPOL: Supplicant port status: Unauthorized
wlan0: State: DISCONNECTED -> SCANNING
Scan SSID - hexdump_ascii(len=12):
     74 61 6d 75 6c 69 6e 6b 2d 77 70 61               xxxx-wpa    
wlan0: Starting AP scan for wildcard SSID
nl80211: Scan SSID - hexdump_ascii(len=12):
     74 61 6d 75 6c 69 6e 6b 2d 77 70 61               xxxx-wpa    
nl80211: Scan SSID - hexdump_ascii(len=0): [NULL]
Scan requested (ret=0) - scan timeout 30 seconds

I tested my eap network with some other computers. All did work. So I doubt there are something wrong with this network chip. Thanks for any help.

Last edited by flaminigo (2012-08-07 18:04:35)

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#2 2012-08-08 00:33:07

Strike0
Member
From: Germany
Registered: 2011-09-05
Posts: 1,429

Re: [SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

Great you managed to solve it yourself quickly. Hopefully the wifi support for your card will get more stable.

Before you write bash scripts, you may want to have a look at the Arch netcfg package and associated tools:
https://wiki.archlinux.org/index.php/Netcfg
They come with a whole set of example scripts to be adapted, auto-wireless, etc.   
welcome to the forum also.

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#3 2012-08-12 02:43:20

flaminigo
Member
Registered: 2012-08-06
Posts: 2

Re: [SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

Thank you very much for the suggestion. I've tested netcfg and it's much more stable than networkmanager. But I have some concerns about the security.
I knew wpa_passphrase could encrypt the password to be a key and we could change the access mode of config file to prevent unwanted accessing.
But is it possible to encrypt the password with the key of the default system keyring? If so, it will be very safe to store configurations and passwords.

Yes, I knew the con would be we had to login system before connecting the network.

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#4 2012-08-12 11:48:55

Strike0
Member
From: Germany
Registered: 2011-09-05
Posts: 1,429

Re: [SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

flaminigo wrote:

But is it possible to encrypt the password with the key of the default system keyring? If so, it will be very safe to store configurations and passwords.

Have a look at the tool suggested here, if that helps your case.

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#5 2012-08-21 11:17:57

ivenkys
Member
Registered: 2012-08-17
Posts: 3

Re: [SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

The original post comes quite high on Google search.

Adding a bit more info to this :
The same problem(Unable to connect) happens on the Thinkpad X220. The wireless controller installed is Centrino Ultimate-N 6300. The kernel driver is iwlwifi.

The solution is to downgrade the Kernel version - move back to Kernel-LTS or to go to Testing.
Kernel versions : 3.4.7-1 to 3.4.9-1 seem to be broken.

I currently have 3.5.2-1 which works fine.

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#6 2012-08-25 10:01:37

ivenkys
Member
Registered: 2012-08-17
Posts: 3

Re: [SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

Addendum : iwlwifi on 3.5.2-1 is problematic , the wireless connection speed varies constantly.
One solution is to disable the 11n mode on iwlwifi and stick to 11g ( i..e max speed of 54Mb/s).

The other solution is to go to the lts version of the kernel (3.0.40-1, at the time of writing). This works solidly with w/l speeds coming as expected.

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#7 2012-08-25 13:51:00

Strike0
Member
From: Germany
Registered: 2011-09-05
Posts: 1,429

Re: [SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

@ivenksys: Good you found a temp solution meanwhile, but it is pretty unrelated in this particular thread. The original poster's TP has a different wifi chipset, not Intel.

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#8 2012-08-27 21:56:44

ivenkys
Member
Registered: 2012-08-17
Posts: 3

Re: [SOLVED] Module rtl8192ce is unable to connect to EAP wireless network

Strike0: Fair enough, however it seems both the cards have the exact same problems and this thread ranks quite high on Google while searching for WiFi issues with TP , so this info might help someone else searching as well.

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