英特尔双频无线7260无法连接
新的Ubuntu 14.04.1安装（内核3.13.0-44），完全更新（通过有线连接）和正确的iwlwifi固件驱动程序（iwlwifi-7260-8）。
联想ThinkPad S440。
我可以通过另一台ThinkPad（T500）从Mac OS X，Windows 7和Ubuntu 14.04连接到无线网络。 我重新启动路由器无济于事。
我对解决这个问题应该采取的措施毫无头绪，并感谢任何帮助。
关于我的系统：
lspci|grep -i wi ： 04:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)
sudo iwconfig ：
eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11abgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=22 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on
nm-tool ：
NetworkManager Tool State: disconnected - Device: wlan0 ---------------------------------------------------------------- Type: 802.11 WiFi Driver: iwlwifi State: disconnected Default: no HW Address: F8:16:54:27:B5:A5 Capabilities: Wireless Properties WEP Encryption: yes WPA Encryption: yes WPA2 Encryption: yes Wireless Access Points FULLRATEAEBA: Infra, C0:3F:0E:B0:AE:BA, Freq 2412 MHz, Rate 54 Mb/s, Strength 59 WPA WPA2 Catalin_103: Infra, C0:A0:BB:8D:18:19, Freq 2422 MHz, Rate 54 Mb/s, Strength 34 WPA WPA2 - Device: eth0 ----------------------------------------------------------------- Type: Wired Driver: r8169 State: unavailable Default: no HW Address: F8:A9:63:55:91:79 Capabilities: Carrier Detect: yes Wired Properties Carrier: off `rfkill list`: 0: tpacpi_bluetooth_sw: Bluetooth Soft blocked: no Hard blocked: no 1: hci0: Bluetooth Soft blocked: no Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: no
dmesg|grep iwl ：
[ 6.465125] iwlwifi 0000:04:00.0: irq 63 for MSI/MSI-X [ 6.476126] iwlwifi 0000:04:00.0: loaded firmware version 22.24.8.0 op_mode iwlmvm [ 6.524174] iwlwifi 0000:04:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144 [ 6.524437] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 6.524673] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 6.739827] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs' [ 6.940780] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 6.941012] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 223.540907] iwlwifi 0000:04:00.0: Time Event end notification failure
sudo lshw ：
*-pci:2 description: PCI bridge product: Lynx Point-LP PCI Express Root Port 3 vendor: Intel Corporation physical id: 1c.2 bus info: pci@0000:00:1c.2 version: e4 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:18 memory:f0600000-f06fffff *-network description: Wireless interface product: Wireless 7260 vendor: Intel Corporation physical id: 0 bus info: pci@0000:04:00.0 logical name: wlan0 version: 83 serial: f8:16:54:27:b5:a5 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-44-generic firmware=22.24.8.0 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn resources: irq:63 memory:f0600000-f0601fff
更新
我正在尝试连接到FULLRATEAEBA: Infra, C0:3F:0E:B0:AE:BA, Freq 2412 MHz, Rate 54 Mb/s, Strength 59 WPA WPA2当我查看消息缓冲区时，它看起来像我’ m连接和validation，但由于无法解释的原因，内核deauthenticate。
[ 2748.066675] wlan0: authenticate with c0:3f:0e:b0:ae:ba [ 2748.068670] wlan0: send auth to c0:3f:0e:b0:ae:ba (try 1/3) [ 2748.070496] wlan0: authenticated [ 2748.073360] wlan0: associate with c0:3f:0e:b0:ae:ba (try 1/3) [ 2748.077787] wlan0: RX AssocResp from c0:3f:0e:b0:ae:ba (capab=0x411 status=0 aid=5) [ 2748.079346] wlan0: associated [ 2793.931365] wlan0: deauthenticating from c0:3f:0e:b0:ae:ba by local choice (reason=3)
更新2
我发现我可以在家里连接而没有问题，但我仍然无法在工作中连接。 奇怪的是，我有一个旧的T500与ubuntu 14.04在工作中连接良好。 下面是dmesg消息。
dmesg连接失败（在工作中） ：
[ 5554.192997] wlan0: authenticate with c0:3f:0e:b0:ae:ba [ 5554.195347] wlan0: send auth to c0:3f:0e:b0:ae:ba (try 1/3) [ 5554.200817] wlan0: authenticated [ 5554.201603] wlan0: associate with c0:3f:0e:b0:ae:ba (try 1/3) [ 5554.205520] wlan0: RX AssocResp from c0:3f:0e:b0:ae:ba (capab=0x411 status=0 aid=8) [ 5554.206777] wlan0: associated [ 5600.638632] wlan0: deauthenticating from c0:3f:0e:b0:ae:ba by local choice (reason=3) [ 5600.642070] cfg80211: Calling CRDA to update world regulatory domain [ 5600.645259] cfg80211: World regulatory domain updated: [ 5600.645262] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 5600.645264] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 5600.645266] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 5600.645268] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 5600.645269] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 5600.645270] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 5600.645279] cfg80211: Calling CRDA for country: DK [ 5600.647737] cfg80211: Regulatory domain changed to country: DK [ 5600.647741] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 5600.647743] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm) [ 5600.647744] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (N/A, 2000 mBm) [ 5600.647745] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (N/A, 2000 mBm) [ 5600.647747] cfg80211: (5490000 KHz - 5710000 KHz @ 40000 KHz), (N/A, 2700 mBm) [ 5600.647748] cfg80211: (57240000 KHz - 65880000 KHz @ 2160000 KHz), (N/A, 4000 mBm)
dmesg连接成功（在家） ：
[ 6.532911] iwlwifi 0000:04:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144 [ 6.532993] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 6.533233] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 6.664207] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 6.664209] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 6.664211] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 6.664212] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 6.664214] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 6.664215] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 6.711736] init: failsafe main process (660) killed by TERM signal [ 6.740856] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs' [ 6.761147] intel_rapl: domain uncore energy ctr 7461:7461 not working, skip [ 6.873429] r8169 0000:03:00.0 eth0: link down [ 6.873991] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 6.874237] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 6.875681] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 6.875917] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled [ 6.884761] type=1400 audit(1421181675.200:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/lightdm/lightdm-guest-session" pid=956 comm="apparmor_parser" [ 6.891403] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 6.891964] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 7.553843] init: plymouth-upstart-bridge main process ended, respawning [ 7.559276] init: plymouth-upstart-bridge main process ended, respawning [ 10.489646] wlan0: authenticate with 52:67:f0:d5:cd:fc [ 10.491707] wlan0: send auth to 52:67:f0:d5:cd:fc (try 1/3) [ 10.498811] wlan0: authenticated [ 10.501626] wlan0: associate with 52:67:f0:d5:cd:fc (try 1/3) [ 10.511184] wlan0: RX AssocResp from 52:67:f0:d5:cd:fc (capab=0x411 status=0 aid=3) [ 10.511997] wlan0: associated [ 10.512017] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 10.512062] cfg80211: Calling CRDA for country: DK [ 10.513768] cfg80211: Regulatory domain changed to country: DK [ 10.513769] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 10.513771] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm) [ 10.513772] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (N/A, 2000 mBm) [ 10.513772] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (N/A, 2000 mBm) [ 10.513773] cfg80211: (5490000 KHz - 5710000 KHz @ 40000 KHz), (N/A, 2700 mBm) [ 10.513774] cfg80211: (57240000 KHz - 65880000 KHz @ 2160000 KHz), (N/A, 4000 mBm) [ 11.115993] IPv6: wlan0: IPv6 duplicate address fe80::fa16:54ff:fe27:b5a5 detected!
我用checkbox进行了系统检查，以测试无线硬件并在无线/无线连接中出现故障。 但错误信息有点令人困惑。 Fontconfig warning: ignoring C.UTF-8: not a valid language tag
我建议你下载并安装-9固件。 也许驱动程序将接受并加载-9固件，而不是正在加载的-8：’加载的固件版本22.24。 8 .0 op_mode iwlmvm。’ 到这里下载http://wireless.kernel.org/en/users/Drivers/iwlwifi?action=AttachFile&do=get&target=iwlwifi-7260-ucode-25.228.9.0.tgz将其拖放到桌面上。 右键单击它并选择“Extract Here”。 现在，在一个终端：
cd ~/Desktop/iwlwifi-7260-ucode-22.228.9.0 cp iwlwifi-7260-9.ucode /lib/firmware
重启并检查：
dmesg | grep iwl
我们也可以尝试一个驱动程序参数：
sudo -i echo "options iwlwifi 11n_disable=8" >> /etc/modprobe.d/iwlwifi.conf exit
重新启动并告诉我们问题是否仍然存在。