Hey all,

Just picked up a Lenovo X230. Everything has been working FLAWLESSLY, except the wifi. Here at school, we use PEAP with WPA2-enterprise. I have serious difficulty connecting to the network.

My wireless card is an Intel Ultimate-N 6300 with 3 antennas.

I tried playing with the following modprobe modules:
11n_disable, power_save, swcrypto, bt_coex_active
Without wireless N, I got dropouts less frequently but they still happened. The other two parameters I used with wireless N, but they didn't solve much.


Code:
 > uname -r

3.2.0-30-generic

 > dmesg | grep iwl

[ 4505.650327] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 4505.657069] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[ 8992.468190] iwlwifi 0000:03:00.0: PCI INT A disabled
[ 9256.148984] iwlwifi 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 9256.149051] iwlwifi 0000:03:00.0: setting latency timer to 64
[ 9256.149092] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
[ 9256.149093] iwlwifi 0000:03:00.0: pci_resource_base = ffffc900050b4000
[ 9256.149095] iwlwifi 0000:03:00.0: HW Revision ID = 0x3E
[ 9256.149394] iwlwifi 0000:03:00.0: irq 44 for MSI/MSI-X
[ 9256.149503] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Ultimate-N 6300 AGN, REV=0x74
[ 9256.149689] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 9256.167372] iwlwifi 0000:03:00.0: device EEPROM VER=0x43a, CALIB=0x6
[ 9256.167374] iwlwifi 0000:03:00.0: Device SKU: 0X1f0
[ 9256.167375] iwlwifi 0000:03:00.0: Valid Tx ant: 0X7, Valid Rx ant: 0X7
[ 9256.167390] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[ 9256.174596] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build 25532
[ 9256.175654] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[ 9398.048710] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 9398.055484] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[ 9398.302922] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 9398.309655] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1

 > lspci

00:00.0 Host bridge: Intel Corporation Ivy Bridge DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 2 (rev c4)
00:1c.2 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 3 (rev c4)
00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04)
02:00.0 System peripheral: Ricoh Co Ltd Device e823 (rev 07)
03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 3e)

 > iwconfig

wlan0     IEEE 802.11abgn  ESSID:"school.edu"  
          Mode:Managed  Frequency:5.765 GHz  Access Point: D8:C7:C8:A1:C8:E8   
          Bit Rate=81 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=54/70  Signal level=-56 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0