I've run rfkill list all and it is hard blocked now.  I've run lspci and get network controller as Broadcom and Ethernet as Qualcommm Atheros Please help, thanks  lspci -knn | grep Net -A3; rfkill list 02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n [14e4:4365] (rev 01)     Subsystem: Lenovo BCM43142 802.11b/g/n [17aa:0611]     Kernel modules: wl 03:00.0 Ethernet controller [0200]: Qualcomm Atheros QCA8172 Fast Ethernet [1969:10a0] (rev 10) 0: hci0: Bluetooth     Soft blocked: no     Hard blocked: no
3130
I'm having serious problems installing the Broadcom drivers for Ubuntu. It worked perfectly on my previous version, but now, it is impossible.   What are the steps to install Broadcom wireless drivers for a BCM43xx card?  I'm a user with no advance knowledge in Linux, so I would need clear explanations on how to make, compile, etc.    lspci -vnn | grep Network showed:   Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b]      iwconfig showed:  lo        no wireless extensions. eth0      no wireless extensions.   NOTE: Answer below is updated every time new information is added and confirmed working.
34615
I think I may have found the cause of my problems with connecting to wifi in Ubuntu 11.10.  I type this in Terminal:  $ rfkill list all 0: phy0: Wireless LAN     Soft blocked: no     Hard blocked: yes 1: acer-wireless: Wireless LAN     Soft blocked: yes     Hard blocked: no $ rfkill unblock all $    If I am correct I must unblock all of those "yes", right? But nothing happens when I try to unblock. Am I typing the wrong command?    Typing sudo modprobe -r acer_wmi seem to have added another problem, now I can't even try to click on the "Enable wireless"-button as it has been grayed out and 1: acer-wireless: Wireless LAN does not show anymore in the rfkill list. Does anyone have any idea how to fix that?  EDIT: I rebooted and now it is not grayed out anymore and the rfkill list all shows as:  0: phy0: Wireless LAN     Soft blocked: no     Hard blocked: no 1: acer-wireless: Wireless LAN     Soft blocked: yes     Hard blocked: no   The 0 is not Hard blocked anymore, but I guess 1: acer-wireless needs to be put off soft blocked somehow.
84504
--Edit-- (in case I need to see this again)  After a clean install this worked: Your device uses the driver b43 and proprietary firmware. The Broadcom STA driver which provides wl is not appropriate. Please get a temporary wired ethernet connection and do:  sudo apt-get remove --purge bcmwl-kernel-source   If it isn't installed, just proceed.  sudo apt-get install linux-firmware-nonfree sudo modprobe -r b43 &amp;&amp; sudo modprobe b43   You should be all set.  --  Thank you guys!!   Tried using the Additional Drivers gui and that didn't work. Tried using jockey-text --list  kmod:wl - Broadcom STA proprietary wireless driver (Proprietary, Disabled, Not in use) [auto-install]   Tried using jockey-text --enable=kmod:wl this was the response  Sorry, the installation of this driver failed. Please have a look at the log file for details: /var/log/jockey.log   From the log file:  2013-02-09 00:49:57,904 DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: enabled, b43legacy: enabled 2013-02-09 00:50:05,572 WARNING: modinfo for module wl failed: ERROR: modinfo: could not find module wl 2013-02-09 00:50:05,572 WARNING: /sys/module/wl/drivers does not exist, cannot rebind wl driver 2013-02-09 00:50:05,600 DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: enabled, b43legacy: enabled    Now it looks and feels like I'm doing everything right and the similar searchs seemed to suggest doing what I've done, so what am I doing wrong and how does one enable this driver? second to last line of the log suggests the file or directory is missing, is there somewhere I can get a linux broadcom driver from to put in that directory? If it's missing why is it in the list?  Please help, while the graphics driver is only partially supported it has given me the right resolution, and everything runs without crashing (but the system information says it's an unknown graphics card, I can live with that) but without the wireless card working I have sit really close to the router thanks to a very short cable...  Hopefully I've given enough information, please send Linux.Ninjas to help.  --  OK, used.  lspci|grep Network    not sure if that would give differentt results but I got   01:00.0 Network Controller: Broadcom Corporation BCM4311 802.11b/g (rev 01)    so then used   iwconfig    and got   lo no wireless extensions.  wlan0 IEEE 802.11bg ESSID:off/any  mode:managed access point not-associated tx-power=0 dbm  Retry long limit:7 RTS thr:off Fragment thr:off power management:on   eth0 no wireless extensions   --  After @Chili555 advice I did   sudo apt-get remove --purge bcmwl-kernel-source   But got   E: dpkg was interupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.   When I do it runs ok, but then crashes and freezes. Halway through it says that it's fixing recurrent problems but needs rebooting, then gets to a line "End of trace" and thats where it halts.
117156
The built-in wifi card in my laptop (Dell XPS M1330) is crap, pretty much. I have an Asus USB wifi card which is significantly better, and it works fine. What I'd like to do is disable the built-in wifi card. Is there a way to do this (without having to boot into BIOS each time I want to disable/enable the built-in wireless)?  @mikewhatever: Here are those outputs  matt@sbod:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 0b05:179d ASUSTek Computer, Inc.  Bus 002 Device 004: ID 05a9:2640 OmniVision Technologies, Inc. OV2640 Webcam Bus 007 Device 002: ID 0483:2016 SGS Thomson Microelectronics Fingerprint Reader matt@sbod:~$ lspci -nnk | grep -iA2 net 09:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express [14e4:1713] (rev 02)     Subsystem: Dell XPS M1330 [1028:0209]     Kernel driver in use: tg3 -- 0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)     Subsystem: Dell Wireless 1395 WLAN Mini-Card [1028:000b]     Kernel driver in use: wl
56966
I have an old Compaq desktop that my children use to access the internet. The kids have repeatedly managed to severely infect the computer with viruses, and this latest round has been a doozy. A friend recently sold me on Ubuntu as a great windows replacement since it is not prone to viruses, so I decided to to give it a go.  I completely overwrote windows with Ubuntu 12.04 to get rid of the viruses, but I can not figure out how to make the wireless network dongle work. I have Googled the topic and tried to go through some of the solutions, but I don't know what I'm doing and I think I may be making things worse. Can someone help me with this? I know NOTHING about Linux and most of the instructions aren't written for someone like me.  Thanks,  lsusb gives the following:  Bus 001 Device 004: ID 050d:615a Belkin Components F7D4101 / F9L1101 802.11abgn Wireless Adapter [Broadcom BCM4323] Bus 005 Device 002: ID 045e:0040 Microsoft Corp. Wheel Mouse Optical Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub   Thanks for helping me with this chili!
19968
I installed Ubuntu on my Dell laptop, but the wifi isn't working! I tried to solve the problem using different commands suggested by people on this forum, but none of them worked for me!  When I ran rfkill list all I get the following:  $ rfkill unblock all $ rfkill list all 0 : dell-wifi: Wireless LAN         Soft blocked: no         Hard blocked: yes 0 : phy0: Wireless LAN         Soft blocked: no         Hard blocked: no $ sudo rfkill unblock wifi       $ rfkill list all 0 : dell-wifi: Wireless LAN         Soft blocked: no         Hard blocked: yes 0 : phy0: Wireless LAN         Soft blocked: no         Hard blocked: no   When I saw that there is a problem with the hardware, I checked the BIOS and everything was set correctly!
117729
I have a problem with my network adapter after upgrading from 13.04 to 13.10. The adapter works for literally several seconds after I establish the connection but then it looks as if it got clogged somehow.  This is what I see amongst my devices:  ~$ lspci | grep -i wireless 02:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01) ~$ uname -a Linux bubek 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:12:00 UTC 2013 i686 i686 i686 GNU/Linux ~$ lsmod | grep 80211 lib80211_crypt_tkip    17387  0  lib80211               14040  2 wl,lib80211_crypt_tkip cfg80211              401436  1 wl   Now, how does is behave. Let's assume I connect to my wireless network and straight after I get connected I ping the default gw:  ~$ ping 10.1.0.1 PING 10.1.0.1 (10.1.0.1) 56(84) bytes of data. 64 bytes from 10.1.0.1: icmp_seq=1 ttl=64 time=226 ms 64 bytes from 10.1.0.1: icmp_seq=4 ttl=64 time=222 ms 64 bytes from 10.1.0.1: icmp_seq=7 ttl=64 time=260 ms 64 bytes from 10.1.0.1: icmp_seq=11 ttl=64 time=265 ms 64 bytes from 10.1.0.1: icmp_seq=16 ttl=64 time=117 ms From 10.1.0.16 icmp_seq=45 Destination Host Unreachable From 10.1.0.16 icmp_seq=46 Destination Host Unreachable   What has happened over here? Is there any possibility I can get it working? The only way I could write that post was that I used my phone and USB tethering :)  Thanks for any tips in advance!
74437
I purchased an HP laptop with the Qualcomm Atheros AR9565 (QCWB335) wireless adapter. I understand that this adapter is currently not supported on Ubuntu 12.04 and there is no way to get wireless access.  I installed compat-wireless-3.6.6-1 ath9k driver and it didn't work, lshw -C network still showed *-network UNCLAIMED after reset.  How can I figure out when Ubuntu will have driver for AR9565? Is there a workaround to get wireless working somehow?
32785
#iwconfig  usb0      no wireless extensions.  eth0      no wireless extensions.  lo        no wireless extensions.  #ifconfig eth0: flags=4099&lt;UP,BROADCAST,MULTICAST&gt;  mtu 1500         ether ec:f4:bb:74:5f:f9  txqueuelen 1000  (Ethernet)         RX packets 0  bytes 0 (0.0 B)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 0  bytes 0 (0.0 B)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0  lo: flags=73&lt;UP,LOOPBACK,RUNNING&gt;  mtu 65536         inet 127.0.0.1  netmask 255.0.0.0         inet6 ::1  prefixlen 128  scopeid 0x10&lt;host&gt;         loop  txqueuelen 1000  (Local Loopback)         RX packets 28  bytes 1596 (1.5 KiB)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 28  bytes 1596 (1.5 KiB)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0  usb0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt;  mtu 1500         inet 192.168.42.169  netmask 255.255.255.0  broadcast 192.168.42.255         inet6 fe80::f076:3aff:fe0d:f215  prefixlen 64  scopeid 0x20&lt;link&gt;         ether f2:76:3a:0d:f2:15  txqueuelen 1000  (Ethernet)         RX packets 10723  bytes 9294838 (8.8 MiB)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 9929  bytes 1471536 (1.4 MiB)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0  #rfkill Usage:  rfkill [options] command Options:     --version   show version (0.5-1+b1 (Debian)) Commands:     help     event     list [IDENTIFIER]     block IDENTIFIER     unblock IDENTIFIER where IDENTIFIER is the index no. of an rfkill switch or one of:     &lt;idx&gt; all wifi wlan bluetooth uwb ultrawideband wimax wwan gps fm nfc   #lspci -knn | grep Net -A202:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)     Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]     Kernel modules: bcma   I have read a lot and still I can not get anywhere with this. I can not even see wireless option in my network connections. I never had such trouble with linux and wifi in the past and just installed kali where parrot os was working well on this machine. What am I missing and why isn't it working?
121751
I have a Broadcom BCM2046, it appears as connected in the bluetooth widget over the panel, and the hcitools drops me data, but it doesn't work at all, I've tried to connect from another device and it's inexistent and viceversa from PC to the device  hcitool dev and lsusb  hci0:   Type: BR/EDR  Bus: USB BD Address: 89:21:09:79:B5:1B  ACL MTU: 1017:8  SCO MTU: 64:0 UP RUNNING PSCAN ISCAN  RX bytes:779 acl:0 sco:0 events:27 errors:0 TX bytes:376 acl:0 sco:0 commands:27 errors:0  Bus 001 Device 007: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of       BCM2046 Bluetooth) Bus 001 Device 008: ID 0a5c:2100 Broadcom Corp. Bluetooth 2.0+eDR dongle
65875
I have a problem with my WiFi card on Kubuntu. Sometimes the system doesn't recognise it, but what is strange is that it doesn't happen everytime, but just about one boot on four, and I can't understand why. If I run lshw -C network I get: *-network UNCLAIMED               description: Network controller        product: Wireless 8265 / 8275        vendor: Intel Corporation        physical id: 0        bus info: pci@0000:03:00.0        version: 78        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress cap_list        configuration: latency=0        resources: memory:ef200000-ef201fff   *-network        description: Ethernet interface        product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller        vendor: Realtek Semiconductor Co., Ltd.        physical id: 0        bus info: pci@0000:04:00.0        logical name: enp4s0        version: 15        serial: 4c:ed:fb:07:64:b1        size: 100Mbit/s        capacity: 1Gbit/s        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation        configuration: autonegotiation=on broadcast=yes driver=r8169 duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.2.131 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s        resources: irq:19 ioport:d000(size=256) memory:ef104000-ef104fff memory:ef100000-ef103fff  Do anyone know how to make it work steadly?
24486
I just installed Ubuntu 14.04.3 LTS after installing windows 10 in my new VN7-571G and the wireless is not working. It never had: even during the installation it was not recognized. I run a script to gather the data , which is . lspci -knn | grep Net -A2 output 03:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:003e] (rev 20)         Subsystem: Lite-On Communications Inc Device [11ad:0804]  The OS behaves like it has no wifi card. I do not see wifi settings in network settings I'm not a linux power user, so I do not know what to do to solve the issue. What should I do to make it work?
115130
I update my Toshiba PORTÉGÉ from Precise(12.04) to Quantal (12.10). After update to Precise wireless device works fine. But after update wireless device is not detect on network manager.  The lspci command says:  02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN      Controller [14e4:4727] (rev 01)             Subsystem: Askey Computer Corp. Device [144f:7175]             Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-             Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast &gt;TAbort- &lt;TAbort- &lt;MAbort- &gt;SERR- &lt;PERR- INTx-             Latency: 0, Cache Line Size: 64 bytes             Interrupt: pin A routed to IRQ 3             Region 0: Memory at d4500000 (64-bit, non-prefetchable) [size=16K]             Capabilities: &lt;access denied&gt;             Kernel modules: bcma   The ethernet connection works fine. I try to install firmware-b43-installer but it says:  $ sudo apt-get install firmware-b43-installer ... Unsuported device(s) found: PCI id 14e4:4727 Aborting   More info related gived by lshw:      root@caprica:~# sudo lshw -class network   *-network                       descripción: Ethernet interface        producto: 82577LC Gigabit Network Connection        fabricante: Intel Corporation        id físico: 19        información del bus: pci@0000:00:19.0        nombre lógico: eth0        versión: 06        serie: e8:9d:87:ed:f4:2a        tamaño: 1Gbit/s        capacidad: 1Gbit/s        anchura: 32 bits        reloj: 33MHz        capacidades: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation        configuración: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.0.0-k duplex=full firmware=0.12-6 ip=192.168.1.5 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s        recursos: irq:41 memoria:d4700000-d471ffff memoria:d472a000-d472afff ioport:3020(size=32)   *-network NO RECLAMADO        descripción: Network controller        producto: BCM4313 802.11b/g/n Wireless LAN Controller        fabricante: Broadcom Corporation        id físico: 0        información del bus: pci@0000:02:00.0        versión: 01        anchura: 64 bits        reloj: 33MHz        capacidades: pm msi pciexpress bus_master cap_list        configuración: latency=0        recursos: memoria:d4500000-d4503fff   I execute this too and this is the output:  root@caprica:~# rfkill list all 0: Toshiba Bluetooth: Bluetooth     Soft blocked: no     Hard blocked: no 1: hci0: Bluetooth     Soft blocked: no     Hard blocked: no   I have checking the model in :  BCM4313 - chipset uses unsupported LCN PHY, we work on it   I had configured privated drivers in the visual enviroment, Broadcom 802.11 Linux STA wireless driver source from bcmwl-kernel-source but don't work either.
62254
After Installing Ubuntu 16.04 in Acer laptop with Qualcom Atheros , it does not work. I tried ,   sudo rfkill list all 0: hci0: Bluetooth     Soft blocked: no     Hard blocked: no 1: acer-wireless: Wireless LAN     Soft blocked: no     Hard blocked: no   Then , checked  uname -r 4.4.0-21-generic   and , as suggested I tried ,   lspci -nnk | grep -iA2 net; dmesg | grep ath10k 02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)     Subsystem: Acer Incorporated [ALI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1025:0987]     Kernel driver in use: r8169     Kernel modules: r8169 03:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0042] (rev 30)     Subsystem: Foxconn International, Inc. Device [105b:e09a]     Kernel driver in use: ath10k_pci [    7.100283] ath10k_pci 0000:03:00.0: pci irq msi interrupts 1 irq_mode 0 reset_mode 0 [    7.390307] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/cal-pci-0000:03:00.0.bin failed with error -2 [    7.390332] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-5.bin failed with error -2 [    7.390336] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-5.bin': -2 [    7.390350] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-4.bin failed with error -2 [    7.390353] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-4.bin': -2 [    7.390365] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-3.bin failed with error -2 [    7.390369] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-3.bin': -2 [    7.390381] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-2.bin failed with error -2 [    7.390384] ath10k_pci 0000:03:00.0: could not fetch firmware file 'ath10k/QCA9377/hw1.0/firmware-2.bin': -2 [    7.390396] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware.bin failed with error -2 [    7.390398] ath10k_pci 0000:03:00.0: could not fetch firmware (-2) [    7.390401] ath10k_pci 0000:03:00.0: could not fetch firmware files (-2) [    7.390404] ath10k_pci 0000:03:00.0: could not probe fw (-2)   Now what should I do ??
113652
I have Intel Centrino N 2230 WiFi card and I tried to download iwlwifi tar from Ubuntu wireless drivers and then I copied its .ucode to firmware folder and then I ran modprobe -r lawgn and modprobe lawgn. It didn't run, even after restart. Then I updated the compat-drivers but still didn't work.  I tried rfkill unblock all, checked the button, etc. but it didn't show up in airmon-ng and iwconfig.  Can anyone kindly help?  This is the output of mine:  lshw -C network   *-network                   description: Ethernet interface    product: RTL8111/8168B PCI Express Gigabit Ethernet controller    vendor: Realtek Semiconductor Co., Ltd.    physical id: 0.2    bus info: pci@0000:07:00.2    logical name: eth0    version: 0a    serial: 28:92:4a:1d:af:a1    size: 100MB/s    capacity: 1GB/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=full ip=192.168.1.3 latency=0 link=yes multicast=yes port=MII speed=100MB/s    resources: irq:41 ioport:2000(size=256) memory:61404000-61404fff memory:61400000-61403fff *-network UNCLAIMED    description: Network controller    product: Intel Corporation    vendor: Intel Corporation    physical id: 0    bus info: pci@0000:08:00.0    version: c4    width: 64 bits    clock: 33MHz    capabilities: pm msi pciexpress bus_master cap_list    configuration: latency=0    resources: memory:61500000-61501fff  iwconfig   lo        no wireless extensions. eth0      no wireless extensions.  airmon-ng    Interface   Chipset     Driver  lsb_release -a; uname -a   No LSB modules are available. Distributor ID: Ubuntu Description:    Ubuntu 10.04.2 LTS Release:    10.04 Codename:   lucid Linux bt 2.6.38 #1 SMP Thu Mar 17 20:52:18 EDT 2011 i686 GNU/Linux
26826
I have Ubuntu 16.04 installed on my laptop. It was working fine until one day an update was there. After the update, I am on kernel 4.15.0-13-generic and there it is. My Broadcom Wifi drivers were nowhere to be detected. On Notification panel, there is no option to switch ON/OFF wifi.  result of lspci -nnk | grep 0280 -A3:  02:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)     Subsystem: Foxconn International, Inc. BCM43142 802.11b/g/n [105b:e071] 03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)     Subsystem: Sony Corporation RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [104d:90be]   I tried different kernels on the present in the grub and they are working fine. Currently, I have to switch to kernel 4.4.0-119.143 to use my wifi.  Here is the error output of command sudo apt-get install bcmwl-kernel-source:  Reading package lists... Done Building dependency tree        Reading state information... Done The following NEW packages will be installed:   bcmwl-kernel-source 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 1,544 kB of archives. After this operation, 8,064 kB of additional disk space will be used. Get:1 http://in.archive.ubuntu.com/ubuntu xenial-updates/restricted amd64 bcmwl-kernel-source amd64 6.30.223.271+bdcom-0ubuntu1~1.2 [1,544 kB] Fetched 1,544 kB in 5s (295 kB/s)                 Selecting previously unselected package bcmwl-kernel-source. (Reading database ... 290899 files and directories currently installed.) Preparing to unpack .../bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu1~1.2_amd64.deb ... Unpacking bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu1~1.2) ... Setting up bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu1~1.2) ... Loading new bcmwl-6.30.223.271+bdcom DKMS files... First Installation: checking all kernels... Building only for 4.15.0-20-generic Building for architecture x86_64 Building initial module for 4.15.0-20-generic ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/bcmwl-kernel-source.0.crash' Error! Bad return status for module build on kernel: 4.15.0-20-generic (x86_64) Consult /var/lib/dkms/bcmwl/6.30.223.271+bdcom/build/make.log for more information. modprobe: FATAL: Module wl not found in directory /lib/modules/4.15.0-20-generic update-initramfs: deferring update (trigger activated) Processing triggers for initramfs-tools (0.122ubuntu8.11) ... update-initramfs: Generating /boot/initrd.img-4.15.0-20-generic   Also, tell me if I update my ubuntu 16.04 to ubuntu 18.04 will help to solve this problem.
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I have got a laptop on ubuntu 16.04 and I can't configure the ethernet card ... I don't have wifi and ethernet connexion... I believe that it is a atheros e2600 but I am not sure.  when I type modinfo alx I have this :      filename:       /lib/modules/4.4.0-31-generic/kernel/drivers/net/ethernet/atheros/alx/alx.ko license:        GPL description:    Qualcomm Atheros(R) AR816x/AR817x PCI-E Ethernet Network Driver author:         Qualcomm Corporation, &lt;nic-devel@qualcomm.com&gt; author:         Johannes Berg &lt;johannes@sipsolutions.net&gt; srcversion:     25B6ABE36E6CB50C1A7E6DF alias:          pci:v00001969d000010A0sv*sd*bc*sc*i* alias:          pci:v00001969d000010A1sv*sd*bc*sc*i* alias:          pci:v00001969d00001090sv*sd*bc*sc*i* alias:          pci:v00001969d0000E0A1sv*sd*bc*sc*i* alias:          pci:v00001969d0000E091sv*sd*bc*sc*i* alias:          pci:v00001969d00001091sv*sd*bc*sc*i* depends:        mdio intree:         Y vermagic:       4.4.0-31-generic SMP mod_unload modversions'   If I do lspci -nn I have this:  02:00.0 Network controller [0280]: Inter Corporation Device [8086:24fb] (rev 10) 03:00.0 Ethernet controller [0200]: Qualcomm Atheros Device [1969:e0b1] (rev 10)   I have download linux-firmware_1.127.22_all.deb and installed doing: sudo dpkg -i  linux-firmware____.deb  I have tried this solution as weel: [  without success either.  I added :  enter code #define ALX_DEV_ID_E2600                0xe0b1 in reg.h and :  { PCI_VDEVICE(ATTANSIC, ALX_DEV_ID_E2600),  .driver_data = ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG },   in main.c  but when I do   `make -C /lib/modules/$(uname -r)/build M=$(pwd) modules   (when I am in /ubuntu-xenial/drivers/net/ethernet/atheros/alx, is that where I should do it ?) I don't have any error. (make entering directory /usr/src/linux-headers-4.4.0-31-generic etc ... and then make leaving directory same one)  but when I do :  sudo make -C /lib/modules/$(uname -r)/build M=$(pwd) modules_install   I have an error: "no such file: bss_file.c:178 sign-file: certs/signing_key.pem no such file or directory".  any Idea ?  Regards,