Wifi 禁用：Ubuntu 19.10 - Intel Wireless 7265

Question

更新到 Ubuntu 19.10 后：

点击继续使用..得到重置了回不使用..。

尝试从 Microsoft 网站下载驱动程序并将它们放入lib/firmware.

WiFi虽然有效。

确保使用正确的驱动程序的正确解决方法是什么？

---

rfkill list all
0: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

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 [8086:5110]
    Kernel driver in use: iwlwifi

ls -al /lib/firmware | grep 7265
-rw-r--r--  1 root root  736844 Mar 30  2017 iwlwifi-7265-10.ucode
-rw-r--r--  1 root root  880604 Mar 30  2017 iwlwifi-7265-12.ucode
-rw-r--r--  1 root root  885224 Mar 30  2017 iwlwifi-7265-13.ucode
-rw-r--r--  1 root root 1180224 Oct 17 21:10 iwlwifi-7265-14.ucode
-rw-r--r--  1 root root 1180356 Mar 30  2017 iwlwifi-7265-16.ucode
-rw-r--r--  1 root root 1180412 Oct  8 21:54 iwlwifi-7265-17.ucode
-rw-r--r--  1 root root  690452 Mar 30  2017 iwlwifi-7265-8.ucode
-rw-r--r--  1 root root  697828 Mar 30  2017 iwlwifi-7265-9.ucode
lrwxrwxrwx  1 root root      21 Nov 17  2017 iwlwifi-7265D-10.ucode -> iwlwifi-7265-10.ucode
-rw-r--r--  1 root root 1002800 Mar 30  2017 iwlwifi-7265D-12.ucode
-rw-r--r--  1 root root 1008692 Mar 30  2017 iwlwifi-7265D-13.ucode
-rw-r--r--  1 root root 1384256 Oct 17 21:10 iwlwifi-7265D-14.ucode
-rw-r--r--  1 root root 1384500 Mar 30  2017 iwlwifi-7265D-16.ucode
-rw-r--r--  1 root root 1383604 Nov 17  2017 iwlwifi-7265D-17.ucode
-rw-r--r--  1 root root 1385368 Nov 17  2017 iwlwifi-7265D-21.ucode
-rw-r--r--  1 root root 1028376 Apr 24  2018 iwlwifi-7265D-22.ucode
-rw-r--r--  1 root root 1032740 Dec  5  2017 iwlwifi-7265D-27.ucode
-rw-r--r--  1 root root 1036668 Oct  8 21:54 iwlwifi-7265D-29.ucode

Answer 1

更新：在我的情况下，禁用 802.11n 后 WIFI 再次工作。我添加了一些选项11n_disable=1来/etc/modprobe.d/iwlwifi.conf-现在看起来是这样的：

# /etc/modprobe.d/iwlwifi.conf
# iwlwifi will dyamically load either iwldvm or iwlmvm depending on the
# microcode file installed on the system.  When removing iwlwifi, first
# remove the iwl?vm module and then iwlwifi.
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac8021
options iwlwifi 11n_disable=1

另请参阅https://wiki.archlinux.org/index.php/Network_configuration/Wireless#iwlwifi（iwlwifi参数也适用于 Ubuntu，Arch 有很好的文档）

我有完全相同的问题（升级到 Ubuntu MATE 19.10 后没有 WIFI 连接）和完全相同的 WIFI 卡（lspci 的相同输出）。

这个问题也存在于 Ubuntu MATE 的新安装中，与升级无关 - 我在 U 盘上尝试了 Ubuntu Mate 18.10 和 Kubuntu 19.10：相同的行为。所以我会说所有 Ubuntu 19.10 版本都受到影响。

我想详细说明什么不起作用的部分：

• WIFI 处于活动状态，我可以看到可用的网络，例如 iwlist wlp3s0 scan
• 但是，连接到网络（使用 GUI）失败：在输入凭据（对于受密码保护的 WPA2 网络）后，它尝试连接几秒钟，然后再次要求输入密码短语......
• 问题也不是 GUI，完全相同的行为由 nmtui

检查 NetworkManager 中的输出，/var/log/syslog我们可以看到关联是失败的：

sudo cat /var/log/syslog | grep "(wlp3s0)" | sed 's/.*device //'

device (wlp3s0): Activation: starting connection 'MY_WIFI' (c5c790fb-86a8-4905-97b0-75170f5e985c)
device (wlp3s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): Activation: (wifi) access point 'MY_WIFI' has security, but secrets are required.
device (wlp3s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): Activation: (wifi) connection 'MY_WIFI' has security, and secrets exist.  No new secrets needed.
device (wlp3s0): supplicant interface state: ready -> scanning
device (wlp3s0): supplicant interface state: scanning -> authenticating
device (wlp3s0): supplicant interface state: authenticating -> associating
device (wlp3s0): supplicant interface state: associating -> disconnected
device (wlp3s0): supplicant interface state: disconnected -> scanning
device (wlp3s0): supplicant interface state: scanning -> authenticating
device (wlp3s0): supplicant interface state: authenticating -> associating
device (wlp3s0): supplicant interface state: associating -> disconnected
device (wlp3s0): supplicant interface state: disconnected -> scanning
device (wlp3s0): supplicant interface state: scanning -> authenticating
device (wlp3s0): supplicant interface state: authenticating -> associating
device (wlp3s0): supplicant interface state: associating -> disconnected
device (wlp3s0): supplicant interface state: disconnected -> scanning
device (wlp3s0): supplicant interface state: scanning -> authenticating
device (wlp3s0): supplicant interface state: authenticating -> associating
device (wlp3s0): supplicant interface state: associating -> disconnected
device (wlp3s0): supplicant interface state: disconnected -> scanning
device (wlp3s0): supplicant interface state: scanning -> authenticating
device (wlp3s0): supplicant interface state: authenticating -> associating
device (wlp3s0): supplicant interface state: associating -> disconnected
device (wlp3s0): Activation: (wifi) association took too long
device (wlp3s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): Activation: (wifi) asking for new secrets
device (wlp3s0): supplicant interface state: disconnected -> scanning
device (wlp3s0): no secrets: User canceled the secrets request.
device (wlp3s0): state change: need-auth -> failed (reason 'no-secrets', sys-iface-state: 'managed')
device (wlp3s0): Activation: failed for connection 'MY_WIFI'
device (wlp3s0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')

这是使用 Ubuntu MATE 19.04 更新之前日志的样子

device (wlp3s0): Activation: starting connection 'MY_WLAN' (b3dffdda-2b7b-467d-a1f5-2b3077d26eb3)
device (wlp3s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): Activation: (wifi) access point 'MY_WLAN' has security, but secrets are required.
device (wlp3s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed') 
device (wlp3s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): Activation: (wifi) connection 'MY_WLAN' has security, and secrets exist.  No new secrets needed. 
device (wlp3s0): supplicant interface state: ready -> authenticating
device (wlp3s0): supplicant interface state: authenticating -> associating
device (wlp3s0): supplicant interface state: associating -> associated
device (wlp3s0): supplicant interface state: associated -> 4-way handshake
device (wlp3s0): supplicant interface state: 4-way handshake -> completed
device (wlp3s0): Activation: (wifi) Stage 2 of 5 (Device Configure) successful. Connected to wireless network "MY_WLAN"
device (wlp3s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed') 
dhcp4 (wlp3s0): activation: beginning transaction (timeout in 45 seconds)
dhcp4 (wlp3s0): dhclient started with pid 20140
dhcp4 (wlp3s0):   address 192.168.1.161
dhcp4 (wlp3s0):   plen 24 (255.255.255.0)
dhcp4 (wlp3s0):   gateway 192.168.1.1
dhcp4 (wlp3s0):   lease time 43200
dhcp4 (wlp3s0):   hostname 'whakaari'
dhcp4 (wlp3s0):   nameserver '192.168.1.1'
dhcp4 (wlp3s0): state changed unknown -> bound
device (wlp3s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
device (wlp3s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
policy: set 'MY_WLAN' (wlp3s0) as default for IPv4 routing and DNS 
device (wlp3s0): Activation: successful, device activated.

检查日志和日志我找不到任何错误或警告，但我注意到 iwlwifi 似乎激活了调试模式。

sudo journalctl | grep iwlwifi 对于 Ubuntu 19.04：

Sep 10 19:59:56 whakaari kernel: iwlwifi 0000:03:00.0: loaded firmware version 29.1044073957.0 op_mode iwlmvm
Sep 10 19:59:56 whakaari kernel: iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210
Sep 10 19:59:56 whakaari kernel: iwlwifi 0000:03:00.0: base HW address: 5c:e0:c5:63:e2:a5
Sep 10 19:59:57 whakaari kernel: iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0
Sep 10 19:59:57 whakaari sensors[873]: iwlwifi-virtual-0
Sep 10 19:59:58 whakaari NetworkManager[856]: <info>  [1568138398.2497] rfkill3: found Wi-Fi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/ieee80211/phy0/rfkill3) (driver iwlwifi)

sudo journalctl | grep iwlwifi 对于 Ubuntu 19.10：

Oct 19 16:16:30 whakaari kernel: iwlwifi 0000:03:00.0: Found debug destination: EXTERNAL_DRAM
Oct 19 16:16:30 whakaari kernel: iwlwifi 0000:03:00.0: Found debug configuration: 0
Oct 19 16:16:30 whakaari kernel: iwlwifi 0000:03:00.0: loaded firmware version 29.1654887522.0 op_mode iwlmvm
Oct 19 16:16:30 whakaari kernel: iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210
Oct 19 16:16:30 whakaari kernel: iwlwifi 0000:03:00.0: Applying debug destination EXTERNAL_DRAM
Oct 19 16:16:30 whakaari kernel: iwlwifi 0000:03:00.0: Allocated 0x00400000 bytes for firmware monitor.
Oct 19 16:16:30 whakaari kernel: iwlwifi 0000:03:00.0: base HW address: 5c:e0:c5:63:e2:a5
Oct 19 16:16:31 whakaari kernel: iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0
Oct 19 16:16:32 whakaari sensors[941]: iwlwifi-virtual-0

Answer 2

从 Ubuntu 19.04 更新到 19.10 后，我遇到了同样的问题。似乎在更新过程之前，我们可能都手动或自动安装了“backport-iwlwifi-dkms”包。该软件包为您使用的特定版本内核编译了一个驱动程序。尽管它可能在更新后大部分情况下都能正常工作，但附加驱动程序工具发现与新内核的兼容性不匹配。

对我来说，解决方案非常简单：使用以下命令重新安装 backport-iwlwifi-dkms。无需禁用 802.11n 或其他任何东西！

sudo apt install backport-iwlwifi-dkms

安装完成后，关闭“附加驱动程序”窗口并重新打开它。窗口现在应该是这样的。