wifi 适配器是 BCM4352，我使用的是 bcmwl-kernel-source 驱动程序。我尝试按照论坛上各种帖子中的建议操作，但两天后还是无法正常工作。
这是 lshw 给出的；
tim@tim-HP-EliteBook-745-G2:~$ sudo lshw -C network
[sudo] password for tim:
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1s0f0
version: 0e
serial: 3c:a8:2a:87:de:28
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:40 ioport:4000(size=256) memory:d5804000-d5804fff memory:d5800000-d5803fff
*-network
description: Wireless interface
product: BCM4352 802.11ac Wireless Network Adapter
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlo1
version: 03
serial: 28:c2:dd:8d:91:a2
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11
resources: irq:47 memory:d0a00000-d0a07fff memory:d0800000-d09fffff
这是 lspci -knn | grep Net -A2; rfkill list 的输出
tim@tim-HP-EliteBook-745-G2:~$ lspci -knn | grep Net -A2; rfkill list
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
Subsystem: Hewlett-Packard Company BCM4352 802.11ac Wireless Network Adapter [103c:2154]
Kernel driver in use: wl
Kernel modules: bcma, wl
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
在网络下拉菜单中，“Wi-Fi 网络”和“断开连接”均显示为灰色。
有人对我如何修复这个问题有什么建议吗？
谢谢
今天我又尝试了一次。
tim@tim-HP-EliteBook-745-G2:~$ rfkill
ID TYPE DEVICE SOFT HARD
0 bluetooth hci0 unblocked unblocked
1 wlan phy0 unblocked unblocked
2 wlan brcmwl-0 unblocked unblocked
因此没有任何东西被阻止，我假设无线网卡名为 brcmwl-0
当我运行扫描时，什么也没发现。
tim@tim-HP-EliteBook-745-G2:~$ iwlist wlo1 scan
wlo1 No scan results
这次设备似乎被称为 wlo1，不确定这是否有任何意义，但我还是尝试扫描 brcmwl-0。
tim@tim-HP-EliteBook-745-G2:~$ iwlist brcmwl-0 scan
brcmwl-0 Interface doesn't support scanning.
接下来我尝试唤醒设备。
tim@tim-HP-EliteBook-745-G2:~$ iwconfig
lo no wireless extensions.
enp0s16f0u2 no wireless extensions.
wlo1 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
enp1s0f0 no wireless extensions.
tim@tim-HP-EliteBook-745-G2:~$ sudo ifconfig wlo1 up
tim@tim-HP-EliteBook-745-G2:~$ service network-manager restart
还是不开心。有人有什么想法吗？
现在我已经尝试过了。
tim@tim-HP-EliteBook-745-G2:~$ lspci -nnk | grep 0280 -A3
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
Subsystem: Hewlett-Packard Company BCM4352 802.11ac Wireless Network Adapter [103c:2154]
Kernel driver in use: wl
Kernel modules: bcma, wl
tim@tim-HP-EliteBook-745-G2:~$ sudo modprobe -r bcma
[sudo] password for tim:
tim@tim-HP-EliteBook-745-G2:~$ sudo modprobe wl
tim@tim-HP-EliteBook-745-G2:~$
还是没有 wifi！
最后，在今晚，我设法通过将其列入黑名单来关闭 bcma 驱动程序，现在只需运行 wl。
tim@tim-HP-EliteBook-745-G2:~$ lspci -vvnn | grep -A 9 Network
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
Subsystem: Hewlett-Packard Company BCM4352 802.11ac Wireless Network Adapter [103c:2154]
Physical Slot: 0
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 46
Region 0: Memory at d0a00000 (64-bit, non-prefetchable) [size=32K]
Region 2: Memory at d0800000 (64-bit, non-prefetchable) [size=2M]
Capabilities: <access denied>
Kernel driver in use: wl
依然没有。
答案1
简单的答案是花 25 英镑买一张新的 WLAN 卡。英特尔 HP7260AC 不到 5 分钟就安装好了，BIOS 毫无问题地接受了，一切工作正常。我重新安装了一次，只是为了保持一切干净。比尝试让驱动程序工作容易多了！