软件和更新中的附加驱动程序选项卡显示“使用来自 bcmwl-kernel-source (专有) 的 Broadcom 802.11 Linux STA 无线驱动程序源”。
以下是输出sudo lspci -vvnn | grep -A 9 Network
06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
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-
Interrupt: pin A routed to IRQ 3
Region 0: Memory at f7200000 (64-bit, non-prefetchable) [disabled] [size=32K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=2 PME-
Capabilities: [58] Vendor Specific Information: Len=78 <?>
输出lspci -knn | grep Net -A3; rfkill list：
06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
Subsystem: Dell Device [1028:0655]
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
输出modinfo wl | egrep 'file|verm'; uname -a：
filename: /lib/modules/4.4.0-116-generic/updates/dkms/wl.ko
vermagic: 4.4.0-116-generic SMP mod_unload modversions
Linux username-Inspiron-3543 4.4.0-116-generic #140~14.04.1-Ubuntu SMP Fri Feb 16 09:25:20 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
运行sudo modprobe wl && dmesg | grep wl出现如下错误：
modprobe: ERROR: could not insert 'wl': Exec format error
输出dpkg -l | grep gcc-5：
ii gcc-5 5.4.1-2ubuntu1~14.04 amd64 GNU C compiler
ii gcc-5-base:amd64 5.4.1-2ubuntu1~14.04 amd64 GCC, the GNU Compiler Collection (base package)
ii libgcc-5-dev:amd64 5.4.1-2ubuntu1~14.04 amd64 GCC support library (development files)
输出modinfo cfg80211
filename: /lib/modules/4.4.0-116-generic/kernel/net/wireless/cfg80211.ko
alias: net-pf-16-proto-16-family-nl80211
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: D2A8E57424453F0D1BE1DBE
depends:
intree: Y
vermagic: 4.4.0-116-generic SMP mod_unload modversions retpoline
parm: bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
答案1
已知这是由于 gcc-5 版本不匹配造成的，我们可以尝试
sudo apt-get install --reinstall gcc-5 bcmwl-kernel-source