我正在设置一台配备 Intel AC 7265D wifi 卡的新 T450s。Windows 7 wif 运行正常。所以，应该不是硬件问题。但在应用了论坛中找到的所有解决方法后，双启动到 14.04 wifi 不起作用。然后我升级到 15.10，内核升级到 4.2.6，应用了最新固件 15.227938.0（它使用 iwlwifi-7265D-15.ucode，我能找到的最新版本）按照 chili555 的分步说明。仍然没有 wifi。行为是无休止的 wifi 身份验证请求。从下面的 dmesg 输出来看，身份验证似乎已完成，但与路由器的关联一直失败。我想知道他们为什么不喜欢对方。是什么阻止了它们关联……任何想法都将不胜感激！
=====================================
dmesg |grep wlan0
[ 5.902703] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 5.984403] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 6.292143] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 33.086486] wlan0: authenticate with <router mac addr>
[ 33.092328] wlan0: send auth to <router mac addr> (try 1/3)
[ 33.180050] wlan0: authenticated
[ 33.180218] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[ 33.180222] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[ 33.184143] wlan0: associate with <router mac addr> (try 1/3)
[ 33.288048] wlan0: associate with <router mac addr> (try 2/3)
[ 33.392015] wlan0: associate with <router mac addr> (try 3/3)
[ 33.495959] wlan0: association with <router mac addr> timed out
.....
lshw -c network===============
-network
description: Wireless interface
product: Wireless 7265
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 59
serial: <mac addr>
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.2.6-040206-generic firmware=15.227938.0 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
resources: irq:50 memory:e1000000-e1001fff
lspci -nnk===========
03:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095b] (rev 59)
Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:5210]
Kernel driver in use: iwlwifi
=====================================
答案1
我们在 /etc/modprobe.d/iwlwifi.conf 中的无线脚本中看到了这一点：
选项 iwlwifi bt_coex_active=N swcrypto=1 11n_disable=1 p2p_disabled=1
如你看到的，p2p_disabled不是有效参数：
parm: swcrypto:using crypto in software (default 0 [hardware]) (int)
parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
parm: amsdu_size_8K:enable 8K amsdu size (default 0) (int)
parm: fw_restart:restart firmware in case of error (default true) (bool)
parm: antenna_coupling:specify antenna coupling in dB (default: 0 dB) (int)
parm: nvm_file:NVM file name (charp)
parm: d0i3_disable:disable d0i3 functionality (default: Y) (bool)
parm: lar_disable:disable LAR functionality (default: N) (bool)
parm: uapsd_disable:disable U-APSD functionality (default: Y) (bool)
parm: bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
parm: led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
parm: power_save:enable WiFi power management (default: disable) (bool)
parm: power_level:default power save level (range from 1 - 5, default: 1) (int)
parm: fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
我建议你这样做：
sudo gedit /etc/modprobe.d/iwlwifi.conf
如果您没有文本编辑器 gedit，请使用 nano 或 Kate 或 Leafpad。将最后一行更改为：
options iwlwifi bt_coex_active=N swcrypto=1 11n_disable=1
仔细校对，保存并关闭文本编辑器。
接下来，我建议明确设置你的监管范围。检查你的：
sudo iw reg get
如果您选择 00，则这是一个通用的设置。请在此处查找您的设置：http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2然后暂时设置一下：
sudo iw reg set IS
当然，如果不是冰岛，请替换您的国家代码。永久设置它：
gksudo gedit /etc/default/crda
将最后一行改为：
REGDOMAIN=IS
仔细校对，保存并关闭文本编辑器。
重新启动并告诉我们连接性是否得到改善。
您可以尝试安装更新的固件：
sudo apt-get update
sudo apt-get install git
git clone https://github.com/OpenELEC/iwlwifi-firmware.git
cd iwlwifi-firmware
sudo ./install
重启。有什么改善吗？