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Wifi stopped working without apparent reason
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I'm using Linux Mint 17.3 Rosa in a Dell Inspiron 1525 laptop. Wireless connection has been working for years in this laptop in different linux distros with proprietary Broadcom driver. I formated my computer 14 days ago, and wireless was working fine after that. I have been alternating between cabled and wireless connection. Yesterday, after disconnecting my cable connection, suddenly I could not use wireless anymore. The wifi networks are listed, but I cannot connect to them. I have confirmed (with other computer) that the network is working properly. I checked the packages that were installed or updated since last time wifi was working, and there were none.
My kernel version is
$ uname -a
Linux mycomputer 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:37:25 UTC 2015 i686 i686 i686 GNU/Linux
Here is my wireless card:
$ lspci -knn | grep Net -A2
0b: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
Here is my dmesg output:
$ dmesg | grep wl
[ 11.216767] wl: module license 'MIXED/Proprietary' taints kernel.
[ 11.225409] wl: module verification failed: signature and/or required key missing - tainting kernel
[ 11.476882] wlan0: Broadcom BCM4315 802.11 Hybrid Wireless Controller 6.30.223.248 (r487574)
Here is the output of iwconfig:
$ iwconfig
wlan0 IEEE 802.11abg ESSID:"housenet"
Mode:Managed Frequency:2.462 GHz Access Point: 20:CF:30:C6:32:A5
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
eth0 no wireless extensions.
Here is ip output (I don't know why it has state DORMANT and mode DORMANT):
$ ip link show wlan0
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT mode DORMANT group default qlen 1000
link/ether 00:23:4d:a8:e4:77 brd ff:ff:ff:ff:ff:ff
Also, rfkill seems to show no problem.
$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
I've tried changing the driver from bcmwl-kernel-source to firmware-b43-installer, reboot the computer, but the problem persists. Strangely, the same problem is now happening in the USB-live version of LM 17.3.
wifi broadcom
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
migrated from askubuntu.com Jun 25 '16 at 14:31
This question came from our site for Ubuntu users and developers.
|
show 5 more comments
I'm using Linux Mint 17.3 Rosa in a Dell Inspiron 1525 laptop. Wireless connection has been working for years in this laptop in different linux distros with proprietary Broadcom driver. I formated my computer 14 days ago, and wireless was working fine after that. I have been alternating between cabled and wireless connection. Yesterday, after disconnecting my cable connection, suddenly I could not use wireless anymore. The wifi networks are listed, but I cannot connect to them. I have confirmed (with other computer) that the network is working properly. I checked the packages that were installed or updated since last time wifi was working, and there were none.
My kernel version is
$ uname -a
Linux mycomputer 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:37:25 UTC 2015 i686 i686 i686 GNU/Linux
Here is my wireless card:
$ lspci -knn | grep Net -A2
0b: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
Here is my dmesg output:
$ dmesg | grep wl
[ 11.216767] wl: module license 'MIXED/Proprietary' taints kernel.
[ 11.225409] wl: module verification failed: signature and/or required key missing - tainting kernel
[ 11.476882] wlan0: Broadcom BCM4315 802.11 Hybrid Wireless Controller 6.30.223.248 (r487574)
Here is the output of iwconfig:
$ iwconfig
wlan0 IEEE 802.11abg ESSID:"housenet"
Mode:Managed Frequency:2.462 GHz Access Point: 20:CF:30:C6:32:A5
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
eth0 no wireless extensions.
Here is ip output (I don't know why it has state DORMANT and mode DORMANT):
$ ip link show wlan0
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT mode DORMANT group default qlen 1000
link/ether 00:23:4d:a8:e4:77 brd ff:ff:ff:ff:ff:ff
Also, rfkill seems to show no problem.
$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
I've tried changing the driver from bcmwl-kernel-source to firmware-b43-installer, reboot the computer, but the problem persists. Strangely, the same problem is now happening in the USB-live version of LM 17.3.
wifi broadcom
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
migrated from askubuntu.com Jun 25 '16 at 14:31
This question came from our site for Ubuntu users and developers.
Check what I posted half an hour ago: askubuntu.com/questions/791287/… Can you connect to any network with another distro?
– Digital Dracula
Jun 25 '16 at 14:09
I don't have another distro on this machine, only Windows.
– Jack Antares
Jun 25 '16 at 14:18
But does it work there? Because if it does that would indicate a non-hardware problem - if you read my own thread, I've tried using other distros, including a completely fresh, live USB and it still failed. For the life of me, I can't imagine how a non-hardware issue can appear like that in different distros, including one booting from a live USB
– Digital Dracula
Jun 25 '16 at 14:24
@DigitalDracula it could also be a driver issue, not necessarily hardware.
– nixpower
Jun 25 '16 at 14:26
@DigitalDracula I've tried in the live-USB of LM 17.3 and the problem is also happening there.
– Jack Antares
Jun 25 '16 at 14:43
|
show 5 more comments
I'm using Linux Mint 17.3 Rosa in a Dell Inspiron 1525 laptop. Wireless connection has been working for years in this laptop in different linux distros with proprietary Broadcom driver. I formated my computer 14 days ago, and wireless was working fine after that. I have been alternating between cabled and wireless connection. Yesterday, after disconnecting my cable connection, suddenly I could not use wireless anymore. The wifi networks are listed, but I cannot connect to them. I have confirmed (with other computer) that the network is working properly. I checked the packages that were installed or updated since last time wifi was working, and there were none.
My kernel version is
$ uname -a
Linux mycomputer 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:37:25 UTC 2015 i686 i686 i686 GNU/Linux
Here is my wireless card:
$ lspci -knn | grep Net -A2
0b: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
Here is my dmesg output:
$ dmesg | grep wl
[ 11.216767] wl: module license 'MIXED/Proprietary' taints kernel.
[ 11.225409] wl: module verification failed: signature and/or required key missing - tainting kernel
[ 11.476882] wlan0: Broadcom BCM4315 802.11 Hybrid Wireless Controller 6.30.223.248 (r487574)
Here is the output of iwconfig:
$ iwconfig
wlan0 IEEE 802.11abg ESSID:"housenet"
Mode:Managed Frequency:2.462 GHz Access Point: 20:CF:30:C6:32:A5
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
eth0 no wireless extensions.
Here is ip output (I don't know why it has state DORMANT and mode DORMANT):
$ ip link show wlan0
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT mode DORMANT group default qlen 1000
link/ether 00:23:4d:a8:e4:77 brd ff:ff:ff:ff:ff:ff
Also, rfkill seems to show no problem.
$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
I've tried changing the driver from bcmwl-kernel-source to firmware-b43-installer, reboot the computer, but the problem persists. Strangely, the same problem is now happening in the USB-live version of LM 17.3.
wifi broadcom
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
I'm using Linux Mint 17.3 Rosa in a Dell Inspiron 1525 laptop. Wireless connection has been working for years in this laptop in different linux distros with proprietary Broadcom driver. I formated my computer 14 days ago, and wireless was working fine after that. I have been alternating between cabled and wireless connection. Yesterday, after disconnecting my cable connection, suddenly I could not use wireless anymore. The wifi networks are listed, but I cannot connect to them. I have confirmed (with other computer) that the network is working properly. I checked the packages that were installed or updated since last time wifi was working, and there were none.
My kernel version is
$ uname -a
Linux mycomputer 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:37:25 UTC 2015 i686 i686 i686 GNU/Linux
Here is my wireless card:
$ lspci -knn | grep Net -A2
0b: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
Here is my dmesg output:
$ dmesg | grep wl
[ 11.216767] wl: module license 'MIXED/Proprietary' taints kernel.
[ 11.225409] wl: module verification failed: signature and/or required key missing - tainting kernel
[ 11.476882] wlan0: Broadcom BCM4315 802.11 Hybrid Wireless Controller 6.30.223.248 (r487574)
Here is the output of iwconfig:
$ iwconfig
wlan0 IEEE 802.11abg ESSID:"housenet"
Mode:Managed Frequency:2.462 GHz Access Point: 20:CF:30:C6:32:A5
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.
eth0 no wireless extensions.
Here is ip output (I don't know why it has state DORMANT and mode DORMANT):
$ ip link show wlan0
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT mode DORMANT group default qlen 1000
link/ether 00:23:4d:a8:e4:77 brd ff:ff:ff:ff:ff:ff
Also, rfkill seems to show no problem.
$ rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
I've tried changing the driver from bcmwl-kernel-source to firmware-b43-installer, reboot the computer, but the problem persists. Strangely, the same problem is now happening in the USB-live version of LM 17.3.
wifi broadcom
wifi broadcom
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
edited Jun 25 '16 at 14:42
Jack Antares
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
asked Jun 25 '16 at 14:05
Jack AntaresJack Antares
92
92
migrated from askubuntu.com Jun 25 '16 at 14:31
This question came from our site for Ubuntu users and developers.
migrated from askubuntu.com Jun 25 '16 at 14:31
This question came from our site for Ubuntu users and developers.
Check what I posted half an hour ago: askubuntu.com/questions/791287/… Can you connect to any network with another distro?
– Digital Dracula
Jun 25 '16 at 14:09
I don't have another distro on this machine, only Windows.
– Jack Antares
Jun 25 '16 at 14:18
But does it work there? Because if it does that would indicate a non-hardware problem - if you read my own thread, I've tried using other distros, including a completely fresh, live USB and it still failed. For the life of me, I can't imagine how a non-hardware issue can appear like that in different distros, including one booting from a live USB
– Digital Dracula
Jun 25 '16 at 14:24
@DigitalDracula it could also be a driver issue, not necessarily hardware.
– nixpower
Jun 25 '16 at 14:26
@DigitalDracula I've tried in the live-USB of LM 17.3 and the problem is also happening there.
– Jack Antares
Jun 25 '16 at 14:43
|
show 5 more comments
Check what I posted half an hour ago: askubuntu.com/questions/791287/… Can you connect to any network with another distro?
– Digital Dracula
Jun 25 '16 at 14:09
I don't have another distro on this machine, only Windows.
– Jack Antares
Jun 25 '16 at 14:18
But does it work there? Because if it does that would indicate a non-hardware problem - if you read my own thread, I've tried using other distros, including a completely fresh, live USB and it still failed. For the life of me, I can't imagine how a non-hardware issue can appear like that in different distros, including one booting from a live USB
– Digital Dracula
Jun 25 '16 at 14:24
@DigitalDracula it could also be a driver issue, not necessarily hardware.
– nixpower
Jun 25 '16 at 14:26
@DigitalDracula I've tried in the live-USB of LM 17.3 and the problem is also happening there.
– Jack Antares
Jun 25 '16 at 14:43
Check what I posted half an hour ago: askubuntu.com/questions/791287/… Can you connect to any network with another distro?
– Digital Dracula
Jun 25 '16 at 14:09
Check what I posted half an hour ago: askubuntu.com/questions/791287/… Can you connect to any network with another distro?
– Digital Dracula
Jun 25 '16 at 14:09
I don't have another distro on this machine, only Windows.
– Jack Antares
Jun 25 '16 at 14:18
I don't have another distro on this machine, only Windows.
– Jack Antares
Jun 25 '16 at 14:18
But does it work there? Because if it does that would indicate a non-hardware problem - if you read my own thread, I've tried using other distros, including a completely fresh, live USB and it still failed. For the life of me, I can't imagine how a non-hardware issue can appear like that in different distros, including one booting from a live USB
– Digital Dracula
Jun 25 '16 at 14:24
But does it work there? Because if it does that would indicate a non-hardware problem - if you read my own thread, I've tried using other distros, including a completely fresh, live USB and it still failed. For the life of me, I can't imagine how a non-hardware issue can appear like that in different distros, including one booting from a live USB
– Digital Dracula
Jun 25 '16 at 14:24
@DigitalDracula it could also be a driver issue, not necessarily hardware.
– nixpower
Jun 25 '16 at 14:26
@DigitalDracula it could also be a driver issue, not necessarily hardware.
– nixpower
Jun 25 '16 at 14:26
@DigitalDracula I've tried in the live-USB of LM 17.3 and the problem is also happening there.
– Jack Antares
Jun 25 '16 at 14:43
@DigitalDracula I've tried in the live-USB of LM 17.3 and the problem is also happening there.
– Jack Antares
Jun 25 '16 at 14:43
|
show 5 more comments
1 Answer
1
active
oldest
votes
I solved my similar issue, maybe this applies to you too.
It appears I had accidentally pressed Fn + F2, which in this Fujitsu Siemens turns off the wifi. And, surprise-surprise, it remembers the choice even after a shutdown.
Check to make sure there isn't a physical button or shortcut combo like mine which deactivates your wifi. Apparently this persists between reboots.
edited yesterday
Rui F Ribeiro
42k1483142
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
But in this case you shouldn't be seeing the networks, right?
– Jack Antares
Jul 1 '16 at 16:40
Good question. Apparently you can. Maybe the shortcut blocks the card from connecting, but allows scanning.
– Digital Dracula
Jul 2 '16 at 14:27
On my version (v30 in Ubuntu 16.04)iwconfigalso shows the TxPower. It saysoffwhen in airplane mode, and13dBmwhen enabled.
– xenoid
Apr 8 '18 at 20:59
It is usually a physical cut-off switch, so persisting across reboots is expected behaviour.
– Rui F Ribeiro
yesterday
add a comment |
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I solved my similar issue, maybe this applies to you too.
It appears I had accidentally pressed Fn + F2, which in this Fujitsu Siemens turns off the wifi. And, surprise-surprise, it remembers the choice even after a shutdown.
Check to make sure there isn't a physical button or shortcut combo like mine which deactivates your wifi. Apparently this persists between reboots.
edited yesterday
Rui F Ribeiro
42k1483142
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
But in this case you shouldn't be seeing the networks, right?
– Jack Antares
Jul 1 '16 at 16:40
Good question. Apparently you can. Maybe the shortcut blocks the card from connecting, but allows scanning.
– Digital Dracula
Jul 2 '16 at 14:27
On my version (v30 in Ubuntu 16.04)iwconfigalso shows the TxPower. It saysoffwhen in airplane mode, and13dBmwhen enabled.
– xenoid
Apr 8 '18 at 20:59
It is usually a physical cut-off switch, so persisting across reboots is expected behaviour.
– Rui F Ribeiro
yesterday
add a comment |
I solved my similar issue, maybe this applies to you too.
It appears I had accidentally pressed Fn + F2, which in this Fujitsu Siemens turns off the wifi. And, surprise-surprise, it remembers the choice even after a shutdown.
Check to make sure there isn't a physical button or shortcut combo like mine which deactivates your wifi. Apparently this persists between reboots.
edited yesterday
Rui F Ribeiro
42k1483142
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
But in this case you shouldn't be seeing the networks, right?
– Jack Antares
Jul 1 '16 at 16:40
Good question. Apparently you can. Maybe the shortcut blocks the card from connecting, but allows scanning.
– Digital Dracula
Jul 2 '16 at 14:27
On my version (v30 in Ubuntu 16.04)iwconfigalso shows the TxPower. It saysoffwhen in airplane mode, and13dBmwhen enabled.
– xenoid
Apr 8 '18 at 20:59
It is usually a physical cut-off switch, so persisting across reboots is expected behaviour.
– Rui F Ribeiro
yesterday
add a comment |
I solved my similar issue, maybe this applies to you too.
It appears I had accidentally pressed Fn + F2, which in this Fujitsu Siemens turns off the wifi. And, surprise-surprise, it remembers the choice even after a shutdown.
Check to make sure there isn't a physical button or shortcut combo like mine which deactivates your wifi. Apparently this persists between reboots.
edited yesterday
Rui F Ribeiro
42k1483142
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
I solved my similar issue, maybe this applies to you too.
It appears I had accidentally pressed Fn + F2, which in this Fujitsu Siemens turns off the wifi. And, surprise-surprise, it remembers the choice even after a shutdown.
Check to make sure there isn't a physical button or shortcut combo like mine which deactivates your wifi. Apparently this persists between reboots.
edited yesterday
Rui F Ribeiro
42k1483142
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
edited yesterday
Rui F Ribeiro
42k1483142
edited yesterday
Rui F Ribeiro
42k1483142
edited yesterday
Rui F Ribeiro
42k1483142
42k1483142
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
answered Jun 26 '16 at 12:16
Digital DraculaDigital Dracula
14516
14516
But in this case you shouldn't be seeing the networks, right?
– Jack Antares
Jul 1 '16 at 16:40
Good question. Apparently you can. Maybe the shortcut blocks the card from connecting, but allows scanning.
– Digital Dracula
Jul 2 '16 at 14:27
On my version (v30 in Ubuntu 16.04)iwconfigalso shows the TxPower. It saysoffwhen in airplane mode, and13dBmwhen enabled.
– xenoid
Apr 8 '18 at 20:59
It is usually a physical cut-off switch, so persisting across reboots is expected behaviour.
– Rui F Ribeiro
yesterday
add a comment |
But in this case you shouldn't be seeing the networks, right?
– Jack Antares
Jul 1 '16 at 16:40
Good question. Apparently you can. Maybe the shortcut blocks the card from connecting, but allows scanning.
– Digital Dracula
Jul 2 '16 at 14:27
On my version (v30 in Ubuntu 16.04)iwconfigalso shows the TxPower. It saysoffwhen in airplane mode, and13dBmwhen enabled.
– xenoid
Apr 8 '18 at 20:59
It is usually a physical cut-off switch, so persisting across reboots is expected behaviour.
– Rui F Ribeiro
yesterday
But in this case you shouldn't be seeing the networks, right?
– Jack Antares
Jul 1 '16 at 16:40
But in this case you shouldn't be seeing the networks, right?
– Jack Antares
Jul 1 '16 at 16:40
Good question. Apparently you can. Maybe the shortcut blocks the card from connecting, but allows scanning.
– Digital Dracula
Jul 2 '16 at 14:27
Good question. Apparently you can. Maybe the shortcut blocks the card from connecting, but allows scanning.
– Digital Dracula
Jul 2 '16 at 14:27
On my version (v30 in Ubuntu 16.04)
iwconfig also shows the TxPower. It says off when in airplane mode, and 13dBm when enabled.– xenoid
Apr 8 '18 at 20:59
On my version (v30 in Ubuntu 16.04)
iwconfig also shows the TxPower. It says off when in airplane mode, and 13dBm when enabled.– xenoid
Apr 8 '18 at 20:59
It is usually a physical cut-off switch, so persisting across reboots is expected behaviour.
– Rui F Ribeiro
yesterday
It is usually a physical cut-off switch, so persisting across reboots is expected behaviour.
– Rui F Ribeiro
yesterday
add a comment |
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Check what I posted half an hour ago: askubuntu.com/questions/791287/… Can you connect to any network with another distro?
– Digital Dracula
Jun 25 '16 at 14:09
I don't have another distro on this machine, only Windows.
– Jack Antares
Jun 25 '16 at 14:18
But does it work there? Because if it does that would indicate a non-hardware problem - if you read my own thread, I've tried using other distros, including a completely fresh, live USB and it still failed. For the life of me, I can't imagine how a non-hardware issue can appear like that in different distros, including one booting from a live USB
– Digital Dracula
Jun 25 '16 at 14:24
@DigitalDracula it could also be a driver issue, not necessarily hardware.
– nixpower
Jun 25 '16 at 14:26
@DigitalDracula I've tried in the live-USB of LM 17.3 and the problem is also happening there.
– Jack Antares
Jun 25 '16 at 14:43