我读过一些类似主题的帖子，但没有一个能解决我的问题。我两周前买了我的笔记本电脑。在第一次出现 wifi 问题后，它运行了几天。但现在，我几乎可以使用板载 wifi 卡 Intel AC 7265 进行任何连接。我尝试将这些行添加到 /etc/modprobe.d/iwlwifi.conf：
options iwlwifi 11n_disable=0
一开始我以为这有用，但我只是一次又一次地收到 wifi 密码请求。但现在和以前一样，无法连接到 Fritzbox Cable 7360。
接下来我在我的日志中发现了这两行：
[ 1.601664] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-15.ucode failed with error -2
[ 1.601682] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-14.ucode failed with error -2
我从以下网站获取了这些固件文件https://github.com/OpenELEC/iwlwifi-firmware/tree/master/firmware并复制到 /lib/firmware。没有效果。
您推荐什么解决方案来重新连接 wifi。我使用了 USB wifi 适配器，但它运行速度很慢，并且连接经常中断。
一些系统信息：
nunatak@zenbook:~$ ifconfig -a
lo Link encap:Lokale Schleife
inet Adresse:127.0.0.1 Maske:255.0.0.0
inet6-Adresse: ::1/128 Gültigkeitsbereich:Maschine
UP LOOPBACK RUNNING MTU:65536 Metrik:1
RX-Pakete:4159 Fehler:0 Verloren:0 Überläufe:0 Fenster:0
TX-Pakete:4159 Fehler:0 Verloren:0 Überläufe:0 Träger:0
Kollisionen:0 Sendewarteschlangenlänge:0
RX-Bytes:280204 (280.2 KB) TX-Bytes:280204 (280.2 KB)
wlp2s0 Link encap:Ethernet Hardware Adresse 34:13:e8:37:91:a5
UP BROADCAST MULTICAST MTU:1500 Metrik:1
RX-Pakete:138 Fehler:0 Verloren:0 Überläufe:0 Fenster:0
TX-Pakete:209 Fehler:0 Verloren:0 Überläufe:0 Träger:0
Kollisionen:0 Sendewarteschlangenlänge:1000
RX-Bytes:24680 (24.6 KB) TX-Bytes:34095 (34.0 KB)
nunatak@zenbook:~$ lspci -nnk | grep 0280 -A2
02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a] (rev 59)
Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:9110]
Kernel driver in use: iwlwifi
nunatak@zenbook:~$ iwconfig
wlp2s0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
nunatak@zenbook:~$ rfkill list
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: asus-wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
3: asus-bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
nunatak@zenbook:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
nunatak@zenbook:/$ dmesg | grep iwl
[ 1.601664] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-15.ucode failed with error -2
[ 1.601682] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-14.ucode failed with error -2
[ 1.608685] iwlwifi 0000:02:00.0: loaded firmware version 25.30.13.0 op_mode iwlmvm
[ 1.639162] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210
[ 1.640538] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 1.640981] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 1.741289] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 1.778071] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0
[ 3.167514] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 3.168108] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 3.228866] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 3.229464] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 6.885733] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 8.099342] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 9.135990] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 10.859563] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 12.114818] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 13.103260] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 15.212138] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 17.292391] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 18.015380] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 21.675385] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 35.347746] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 52.529456] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 63.717210] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 65.371841] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 65.835744] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 70.561798] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 71.247224] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 72.281874] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 73.196575] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 76.857343] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 77.893446] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 78.924999] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 81.128964] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 85.214884] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 85.903202] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 87.039947] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 95.034215] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 104.992122] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 112.852455] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 114.608110] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 256.792691] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 264.331317] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 269.724769] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 274.028032] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 274.717281] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 275.747285] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 276.781386] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 310.986914] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 322.207694] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 392.825547] iwlwifi 0000:02:00.0: No association and the time event is over already...
[ 451.701144] iwlwifi 0000:02:00.0: No association and the time event is over already...
[编辑] 根据要求，ls -al /lib/firmware | grep 7265 的响应：
nunatak@zenbook:~$ ls -al /lib/firmware | grep 7265
-rw-r--r-- 1 root root 736844 Nov 20 17:18 iwlwifi-7265-10.ucode
-rw-r--r-- 1 root root 880604 Mai 13 2015 iwlwifi-7265-12.ucode
-rw-r--r-- 1 root root 885224 Aug 3 16:43 iwlwifi-7265-13.ucode
-rw-r--r-- 1 root root 26989 Jan 27 14:10 iwlwifi-7265-14.ucode
-rw-r--r-- 1 root root 25986 Jan 27 14:10 iwlwifi-7265-15.ucode
-rw-r--r-- 1 root root 690452 Nov 24 2014 iwlwifi-7265-8.ucode
-rw-r--r-- 1 root root 697828 Dez 1 2014 iwlwifi-7265-9.ucode
-rw-r--r-- 1 root root 740436 Nov 20 17:18 iwlwifi-7265D-10.ucode
-rw-r--r-- 1 root root 1002800 Mai 13 2015 iwlwifi-7265D-12.ucode
-rw-r--r-- 1 root root 1008692 Aug 3 16:43 iwlwifi-7265D-13.ucode
-rw-r--r-- 1 root root 27005 Jan 27 14:11 iwlwifi-7265D-14.ucode
-rw-r--r-- 1 root root 27005 Jan 27 14:11 iwlwifi-7265D-15.ucode
我从 github 复制了以下文件：iwlwifi-7265-14.ucode iwlwifi-7265-15.ucode iwlwifi-7265D-14.ucode iwlwifi-7265D-15.ucode
哦，我想你是对的。文件太小了。我从 github 获取了 html，而不是文件。;)
[编辑 2016 年 1 月 28 日] 我家附近还有许多其他 WLAN。路由器显示有 30 个其他 wifi 信号。其中大多数位于信道 11，这也是我们自动设置的。总共有 13 个信道，其中一些信道当时没有被其他人使用。建议切换到这种未使用的信道吗？
答案1
请安装最新的 7265 固件。从终端：
sudo apt-get update
sudo apt-get install git
git clone https://github.com/OpenELEC/iwlwifi-firmware.git
cd iwlwifi-firmware/firmware
sudo cp iwlwifi-7265* /lib/firmware
查看：
ls -al /lib/firmware | grep 7265
重新启动并告诉我们性能是否有所改善。
检查路由器中的设置。首选 WPA2-AES；而不是任何 WPA 和 WPA2 混合模式，当然也不是 TKIP。其次，如果您的路由器支持 N 速度，那么使用 2.4 GHz 频段的 20 MHz 信道宽度（而不是自动 20/40 MHz）可能会获得更好的连接性，尽管它可能会影响 N 速度。使用固定信道（1、6 或 11）比自动信道选择更幸运。此外，请确保路由器未设置为仅使用 N 速度；首选自动 B、G 和 N。进行这些更改后，重新启动路由器。
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
如果您没有文本编辑器 gedit，请使用 nano 或 Kate 或 leafpad。
将最后一行改为：
REGDOMAIN=IS
仔细校对，保存并关闭文本编辑器。
接下来，我在网络管理器中将 IPv6 设置为忽略：http://docs.fedoraproject.org/en-US/Fedora/18/html/Installation_Guide/images/netconfig/network-connections-ipv6-ignore.png 此示例适用于以太网，但您想要无线。
如果这些更改没有帮助，请尝试：
gksudo gedit /etc/modprobe.d/iwlwifi.conf
将添加的行更改options iwlwifi 11n_disable=0为：
options iwlwifi 11n_disable=8
仔细校对，保存并关闭文本编辑器。重新启动。
答案2
对于拥有英特尔 NUC 的人来说，请记住，吞吐量差是由于英特尔 7265 芯片设计不良造成的，如果你打开蓝牙，它会干扰 WiFi 信号，所以很简单，关闭蓝牙。
答案3
遇到了同样的问题，禁用省电功能对我有用：
iw wlan0 set power_save off