WiFi suddenly stopped working (SOLVED)

[amlc]

Hello! I've been experiencing some problems with my WiFI since yesterday. I've already reseted my router and rebooted my PC. If I boot to a Live PeppermintOS USB, WiFi works pretty well.

Here are some outputs from commands you might find useful:

Code: [Select]

lspci | grep Network → 12:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)


ifconfig
enp0s29u1u2 Link encap:Ethernet  direcciónHW 52:e0:04:04:81:21  
          Direc. inet:192.168.42.118  Difus.:192.168.42.255  Másc:255.255.255.0
          Dirección inet6: fe80::52da:aa8c:84ac:6afa/64 Alcance:Enlace
          ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST  MTU:1500  Métrica:1
          Paquetes RX:28473 errores:1 perdidos:0 overruns:0 frame:1
          Paquetes TX:23557 errores:0 perdidos:0 overruns:0 carrier:0
          colisiones:0 long.colaTX:1000 
          Bytes RX:25188987 (25.1 MB)  TX bytes:4512250 (4.5 MB)

enp19s0   Link encap:Ethernet  direcciónHW 78:2b:cb:ee:0e:cd  
          ACTIVO DIFUSIÓN MULTICAST  MTU:1500  Métrica:1
          Paquetes RX:0 errores:0 perdidos:0 overruns:0 frame:0
          Paquetes TX:0 errores:0 perdidos:0 overruns:0 carrier:0
          colisiones:0 long.colaTX:1000 
          Bytes RX:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Bucle local  
          Direc. inet:127.0.0.1  Másc:255.0.0.0
          Dirección inet6: ::1/128 Alcance:Anfitrión
          ACTIVO BUCLE FUNCIONANDO  MTU:65536  Métrica:1
          Paquetes RX:6477 errores:0 perdidos:0 overruns:0 frame:0
          Paquetes TX:6477 errores:0 perdidos:0 overruns:0 carrier:0
          colisiones:0 long.colaTX:1000 
          Bytes RX:464247 (464.2 KB)  TX bytes:464247 (464.2 KB)

linux-firmware is installed, my kernel is 4.15.0-29-generic

I remember my Wireless interface was wlp18s0, but now it's gone.

Thanks for your help 

[amlc]

I've seen the sticky post, so here's the outputs:

Code: [Select]

sudo lshw -C network

*-network NO RECLAMADO  (It means "Not Claimed" in spanish)
       descripción: Network controller
       producto: BCM4313 802.11bgn Wireless Network Adapter
       fabricante: Broadcom Corporation
       id físico: 0
       información del bus: pci@0000:12:00.0
       versión: 01
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress bus_master cap_list
       configuración: latency=0
       recursos: memoria:fbc00000-fbc03fff
  *-network
       descripción: Ethernet interface
       producto: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       fabricante: Realtek Semiconductor Co., Ltd.
       id físico: 0
       información del bus: pci@0000:13:00.0
       nombre lógico: enp19s0
       versión: 02
       serie: 78:2b:cb:ee:0e:cd
       tamaño: 10Mbit/s
       capacidad: 100Mbit/s
       anchura: 64 bits
       reloj: 33MHz
       capacidades: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuración: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       recursos: irq:18 ioport:e000(size=256) memoria:d0b10000-d0b10fff memoria:d0b00000-d0b0ffff memoria:fb200000-fb21ffff
  *-network
       descripción: Ethernet interface
       id físico: 2
       nombre lógico: enp0s29u1u2
       serie: 52:e0:04:04:81:21
       capacidades: ethernet physical
       configuración: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.118 link=yes multicast=yes


iwconfig

enp19s0   no wireless extensions.
enp0s29u1u2  no wireless extensions.
lo        no wireless extensions.


ifconfig

enp0s29u1u2 Link encap:Ethernet  direcciónHW 52:e0:04:04:81:21  
          Direc. inet:192.168.42.118  Difus.:192.168.42.255  Másc:255.255.255.0
          Dirección inet6: fe80::52da:aa8c:84ac:6afa/64 Alcance:Enlace
          ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST  MTU:1500  Métrica:1
          Paquetes RX:31679 errores:1 perdidos:0 overruns:0 frame:1
          Paquetes TX:26622 errores:0 perdidos:0 overruns:0 carrier:0
          colisiones:0 long.colaTX:1000 
          Bytes RX:27060784 (27.0 MB)  TX bytes:5546386 (5.5 MB)

enp19s0   Link encap:Ethernet  direcciónHW 78:2b:cb:ee:0e:cd  
          ACTIVO DIFUSIÓN MULTICAST  MTU:1500  Métrica:1
          Paquetes RX:0 errores:0 perdidos:0 overruns:0 frame:0
          Paquetes TX:0 errores:0 perdidos:0 overruns:0 carrier:0
          colisiones:0 long.colaTX:1000 
          Bytes RX:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Bucle local  
          Direc. inet:127.0.0.1  Másc:255.0.0.0
          Dirección inet6: ::1/128 Alcance:Anfitrión
          ACTIVO BUCLE FUNCIONANDO  MTU:65536  Métrica:1
          Paquetes RX:6847 errores:0 perdidos:0 overruns:0 frame:0
          Paquetes TX:6847 errores:0 perdidos:0 overruns:0 carrier:0
          colisiones:0 long.colaTX:1000 
          Bytes RX:495802 (495.8 KB)  TX bytes:495802 (495.8 KB)


sudo iwlist scan

enp19s0   Interface doesn't support scanning.
enp0s29u1u2  Interface doesn't support scanning.
lo        Interface doesn't support scanning.


rfkill list

0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

[zebedeeboss]

Hi amic,

was it working before an update- could it be a kernel problem

have you tried going back to the 4.15.0-23 kernel

Regards Zeb...

[TonyBronze]

could you post the result from

Code: [Select]

dmesg | grep -i "error\|warn\|fail"

Which driver are you using?  If you click on settings, additional drivers, does the driver appear there?

[amlc]

could you post the result from
Code: [Select]

dmesg | grep -i "error\|warn\|fail"


Which driver are you using?  If you click on settings, additional drivers, does the driver appear there?

Code: [Select]

[    1.593366] RAS: Correctable Errors collector initialized.
[   15.622289] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro
[   16.878136] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x0000000000000549 (\_SB.PCI0.SBRG.GPI1) (20170831/utaddress-247)
[   16.878145] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x0000000000000549 (\_SB.PCI0.SBRG.GPI1) (20170831/utaddress-247)
[   16.878151] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x0000000000000549 (\_SB.PCI0.SBRG.GPI1) (20170831/utaddress-247)

The driver is: bcmwl-kernel-source

[amlc]

Hi amic,

was it working before an update- could it be a kernel problem

have you tried going back to the 4.15.0-23 kernel

Regards Zeb...

Hello Zeb. I've just rebooted using 4.13.0 and my Wifi is working again. Thanks for your help. Do you have any idea why 4.15.0-29 has that problem?

Best regards, Mateo.

[zebedeeboss]

It can happen at any time, it is just a driver regression.

Keep chatting with TonyBronze. He will probably get you working on the latest kernel.

Regards Zeb...

[TonyBronze]

Can you open synaptic package manager (menu>system>synaptic package manager.)

Click on settings then repositories, click on the other software tab and make sure there is a tick in the box next to "Canonical Partners"

Then type in the search box "broadcom" , right click on b43-fwcutter and click on mark to install (if it asks to install other drivers as well, select okay)

Then click on apply

When done, exit Synaptic Package Manager, reboot and see if it is working.

[PCNetSpec]

Post the output from:

Code: [Select]

lspci -vnn | grep -i net

and

Code: [Select]

lsusb

and if neccessary (to install the right wireless drivers) are you able to connect via an ethernet cable ?

[spence]

FWIW... the  4.15.0-29 kernel broke my desktop's WiFi too... I elected to purge that kernel and wait for the next... hasn't bothered the laptop's WiFI though 

Code: [Select]

System:    Host: toshiba Kernel: 4.15.0-29-generic x86_64 bits: 64 Desktop: N/A Distro: Peppermint Nine
Network:   Card: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) driver: ath9k
           IF: wlp4s0 state: up mac: <filter>

[amlc]

Hey TonyBronze, b43-fwcutter is already installed, the repository is checked as well.

PCNetSpec, thanks for replying, here's the output:

Code: [Select]

lspci -vnn | grep -i net
12:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
13:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 02)
	Subsystem: Dell RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [1028:0447]
mateo@dell ~ $ lsusb 
Bus 002 Device 006: ID 413c:8160 Dell Computer Corp. Wireless 365 Bluetooth
Bus 002 Device 005: ID 413c:8162 Dell Computer Corp. Integrated Touchpad [Synaptics]
Bus 002 Device 004: ID 413c:8161 Dell Computer Corp. Integrated Keyboard
Bus 002 Device 003: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0c45:6480 Microdia Sonix 1.3 MP Laptop Integrated Webcam
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

[TonyBronze]

Now try

Code: [Select]

sudo apt install firmware-b43-installer

It should remove the bcwml-kernel-source so if asked say yes.

Reboot and see if that works

[PCNetSpec]

bcmwl-kernel-source is actually the correct driver for 14e4:4727 .. but because it's a source package it'd need recompiling (so purging and reinstalling) after a kernel update.

There is a way around this, use the dkms version

Connect to your router via an ethernet cable, then run:

Code: [Select]

sudo apt-get remove --purge bcmwl-kernel-source

then

Code: [Select]

sudo apt-get install dkms build-essential broadcom-sta-dkms

if that driver works, it should automagically recompile when you receive kernel updates

[TonyBronze]

bcmwl-kernel-source rarely works for me even on new installs.  I always remove it and install fwcutter and B43 firmware.  I have 5 dell laptops with Broadcom wi-fi and bcmwl-kernel-source doesn't work on any of them 

[PCNetSpec]

Depends on which  broadcom chip you have .. You pretty much can't go wrong in you get the IDvendor:IDdevice string, then compare it to the chart here:
https://askubuntu.com/questions/55868/installing-broadcom-wireless-drivers
for the correct driver.

Though any that suggest you use bcmwl-kernel-source, ignore it and use broadcom-sta-dkms instead .. same driver (wl) but rebuilds automatically at kernel updates.