Score:1

Wifi network disabled

ni flag

enter image description hereIam using Ubuntu 20.4v on my Dell Inspiron laptop for the past 2 years. Everything was fine until 2 days ago, my wireless connectivity was disabled. I had used the wifi just a day before perfectly. I am unable to enable the wifi, I googled & tried many ways to enable the wifi network thru' the terminal but failed. On the contrary, when I plugged in a USB wifi receiver, I was able to see the available wifi networks & connect to my wifi. Kindly help...

Regards Bharath

in flag
Without knowing any details about your hardware, this will be very difficult to answer. Could you [edit] your question to include: (0) the Terminal output of `lspci | egrep -i --color 'network|ethernet|wireless|wi-fi` (1) the Terminal output of `sudo lshw -c network` (2) what might have happened two days ago to affect your network (updates, modifying files, etc.)
waltinator avatar
it flag
Read https://askubuntu.com/help/how-to-ask and https://askubuntu.com/help/formatting
Bharath avatar
ni flag
@matigo - I'm sorry, I'm unable to follow your instructions, I did not get any response in the terminal with the above mentioned command in the terminal. Pls help further
in flag
If the two Terminal commands returned nothing — not even an error — then you are not running Ubuntu
Bharath avatar
ni flag
@matigo - I did get a response only for the second command as mentioned by you.
Bharath avatar
ni flag
@matigo - how do i attach the screen shot of the response in the coment section ??
in flag
Copy/Paste is usually better. Select the text, [Ctrl]+[Shift]+[C] to copy (unless you've changed the key combination, then [edit] your question to include that output
Bharath avatar
ni flag
@matigo - i have attached the pic for your ref, pls help further.
Bharath avatar
ni flag
*-network description: Ethernet interface product: AR8152 v1.1 Fast Ethernet vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:03:00.0 logical name: enp3s0 version: c1 serial: b8:ac:6f:5f:c6:fb capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
Bharath avatar
ni flag
configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.1-NAPI latency=0 link=no multicast=yes port=twisted pair resources: irq:28 memory:f0400000-f043ffff ioport:2000(size=128)
in flag
Based on your screenshot (and comments), there is no WiFi device found by the OS. This can mean either the device has been disabled (a hardware switch?), removed, or broken. `sudo lspci` and/or `sudo lsusb` would let you know whether the device is seen at all but, if you are unable to get any results, then it will be difficult to offer next steps.
Someone avatar
my flag
Please [edit] to include the output of `lspci -nnk | grep 0280 -A3`. Welcome to Ask Ubuntu!
Bharath avatar
ni flag
@matigo - 00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12) 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12) 00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06) 00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
Bharath avatar
ni flag
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06) 00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 06) 00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6) 00:1f.0 ISA bridge: Intel Corporation HM57 Chipset LPC Interface Controller (rev 06) 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06)
Bharath avatar
ni flag
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06) 00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06) 03:00.0 Ethernet controller: Qualcomm Atheros AR8152 v1.1 Fast Ethernet (rev c1) ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02) ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02) ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
Bharath avatar
ni flag
ff:02.1 Host bridge: Intel Corporation 1st Generation Core i3/5/7 Processor QPI Physical 0 (rev 02) ff:02.2 Host bridge: Intel Corporation 1st Generation Core i3/5/7 Processor Reserved (rev 02) ff:02.3 Host bridge: Intel Corporation 1st Generation Core i3/5/7 Processor Reserved (rev 02)
Bharath avatar
ni flag
@matigo Bus 002 Device 003: ID 2357:0109 TP-Link TL WN823N RTL8192EU 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 004: ID 0bda:0138 Realtek Semiconductor Corp. RTS5138 Card Reader Controller Bus 001 Device 003: ID 0c45:6461 Microdia 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 The above response is for lsusb - i am currently using a TP Link USB wifi reciever
Score:0
bv flag

Enable wireless via a function key on your keyboard. On my Dell Inspiron the key combination to enable wireless is Fn+F2 and I can see a little wireless symbol printed on the F2 key.

I was having the same exact situation as you. I must have toggled that key combination and forgot about it. I see that when the Fn+F2 is toggled to 'disable' status, the KDE networks wireless interface is disabled and non-responsive. In other words, the keyboard switch is the master switch relative to the KDE network interface.

Bharath avatar
ni flag
i have tried that combination right in the begining & every other combination of keypad keys but in vain.
hoatzin avatar
bv flag
Rats. Have you ran lspci yet in your terminal? You might try it without the grep option.You should see an entry for 'Network Controller' which should describe your wireless adapter.
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