我已经在 Dell Inc. Precision M6700 上安装了 Ubuntu 22.04，它连接到一个扩展坞和两个外接显示器。在升级到 22.04 之前，我一直在使用 21.10，设置相同，没有任何问题。升级后，我遇到了多个问题，包括时不时无法识别外接显示器，但最令人沮丧的是 wifi 问题。最初，wifi 连接不稳定（可以连接，但切换用户时无法识别 wifi 适配器）。现在它永远无法连接到 wifi。我尝试了网上能找到的所有可能的解决方案，但还是无法解决这个问题。适配器显示为无人认领，我认为这表明没有它的驱动程序，但我不知道该怎么办。如果有人能帮助解决此问题，我将不胜感激。
lshw -c 网络的输出
*-network
description: Ethernet interface
product: 82579LM Gigabit Network Connection (Lewisville)
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eno1
version: 04
serial: f0:1f:af:1f:2b:81
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.15.0-43-generic duplex=full firmware=0.13-3 ip=192.168.1.64 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:33 memory:f7e00000-f7e1ffff memory:f7e39000-f7e39fff ioport:f080(size=32)
*-network UNCLAIMED
description: Network controller
product: Centrino Ultimate-N 6300
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
version: 35
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: memory:f7d00000-f7d01fff
lspci -knn | grep Net -A3; rfkill list 的输出：
00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network Connection (Lewisville) [8086:1502] (rev 04)
DeviceName: Onboard LAN
Subsystem: Dell 82579LM Gigabit Network Connection (Lewisville) [1028:053f]
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1a.0 USB controller [0c03]: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 [8086:1e2d] (rev 04)
--
03:00.0 Network controller [0280]: Intel Corporation Centrino Ultimate-N 6300 [8086:422b] (rev 35)
Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN [8086:1121]
0c:00.0 FireWire (IEEE 1394) [0c00]: O2 Micro, Inc. 1394 OHCI Compliant Host Controller [1217:13f7] (rev 05)
Subsystem: Dell 1394 OHCI Compliant Host Controller [1028:053f]
1: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
2: dell-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
16: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
退出 sudo modprobe iwlwifi && sudo dmesg | grep iwl
[52515.092241] Loading modules backported from iwlwifi
[52515.092246] iwlwifi-stack-public:master:9858:4c7cba27
清除反向端口后，按照您的 (chili555) 建议并重新启动，wifi 在登录屏幕上已连接。但我登录后，它再次显示未找到 wifi 适配器。
sudo lshw -class network 的输出显示已禁用（之前显示未认领）
*-network
description: Ethernet interface
product: 82579LM Gigabit Network Connection (Lewisville)
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eno1
version: 04
serial: f0:1f:af:1f:2b:81
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.15.0-43-generic duplex=full firmware=0.13-3 ip=192.168.1.64 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:27 memory:f7e00000-f7e1ffff memory:f7e39000-f7e39fff ioport:f080(size=32)
*-network DISABLED
description: Wireless interface
product: Centrino Ultimate-N 6300
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 35
serial: 3c:a9:f4:3a:eb:90
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.15.0-43-generic firmware=9.221.4.1 build 25532 6000-4.uc latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:31 memory:f7d00000-f7d01fff
更新：我想发布此更新，以防其他人遇到类似问题。正如 chilli555（谢谢！）在评论部分建议的那样，我检查了其他模块，一旦我在 bios 中禁用了 firewire 模块，我就不再遇到 wifi 问题了。我不知道这两个是如何连接的，但它似乎为我解决了这个问题。