no wifi adapter found

cathola

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I just installed version 19.10 of Ubuntu, and after rebooting, the wifi symbol is not visible in the settings anymore. When I search for it, it says there is no wifi adapter found. I am very new to Ubuntu, and nothing I have tried seems to work. What can I do?
 


arochester

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What is the output from a Terminal of
Code:
lspci |grep Network
and
Code:
lsusb
 

cathola

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the output of lspci |grep Network is
02:00.0 Network controller: Intel Corporation Device 2723 (rev 1a)
and the output of lsusb is
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0029 Intel Corp.
Bus 001 Device 002: ID 0c45:6723 Microdia Integrated_Webcam_HD
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 

smooth_buddha

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I just installed version 19.10 of Ubuntu, and after rebooting, the wifi symbol is not visible in the settings anymore. When I search for it, it says there is no wifi adapter found. I am very new to Ubuntu, and nothing I have tried seems to work. What can I do?
Try both commands:

Iwconfig
Ifconfig

Iwconfig is for wireless connections
Ifconfig should show all connections ( ethos or enps0 will be wired, lo is loop back don’t worry about that one, and wlp3s0 would be a wireless connection)


What’s the output of them both
 

jglen490

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lspci is good, but
Code:
inxi -Nn
portrays the hardware better, and gives you info you can use to chase down the driver that you need.
 

cathola

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Try both commands:

Iwconfig
Ifconfig

Iwconfig is for wireless connections
Ifconfig should show all connections ( ethos or enps0 will be wired, lo is loop back don’t worry about that one, and wlp3s0 would be a wireless connection)


What’s the output of them both
the output of iwconfig is
lo no wireless extensions.

bnep0 no wireless extensions.

and the output of ifconfig is
bnep0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.44.194 netmask 255.255.255.0 broadcast 192.168.44.255
inet6 fe80::da89:e8e5:5b97:4e57 prefixlen 64 scopeid 0x20<link>
ether 60:f2:62:a7:ea:49 txqueuelen 1000 (Ethernet)
RX packets 7736 bytes 6016388 (6.0 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7403 bytes 915059 (915.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 771 bytes 68103 (68.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 771 bytes 68103 (68.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
 

jglen490

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And that's exactly what inxi does, it gives you clues. It shows you the same info as lpci or lshw do, but in a better presentation. Whoever wrote inxi deserves a medal, it's a great and flexible tool, and for a command line program has a great presentation layer.
 

cathola

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well, inxi gives me
Network:
Device-1: Intel driver: N/A
IF-ID-1: bnep0 state: unknown speed: N/A duplex: N/A
mac: 60:f2:62:a7:ea:49
 

Vrai

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well, inxi gives me
Network:
Device-1: Intel driver: N/A
IF-ID-1: bnep0 state: unknown speed: N/A duplex: N/A
mac: 60:f2:62:a7:ea:49
What "flags" did you use?
Please share the actual exact command used.
Try
Code:
inxi -F
 

cathola

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ok, I used inxi -Nn, whcih gave me
Network:
Device-1: Intel driver: N/A
IF-ID-1: bnep0 state: unknown speed: N/A duplex: N/A
mac: 60:f2:62:a7:ea:49

and inxi -F
System:
Host: sara-computer Kernel: 4.15.0-1076-oem x86_64 bits: 64
Desktop: Gnome 3.34.3 Distro: Ubuntu 19.10 (Eoan Ermine)
Machine:
Type: Laptop System: Dell product: XPS 13 7390 v: N/A
serial: <root required>
Mobo: Dell model: 0G2D0W v: A00 serial: <root required> UEFI: Dell
v: 1.4.0 date: 11/25/2019
Battery:
ID-1: BAT0 charge: 20.1 Wh condition: 48.5/52.0 Wh (93%)
CPU:
Topology: Quad Core model: Intel Core i7-10510U bits: 64 type: MT MCP
L2 cache: 8192 KiB
Speed: 1903 MHz min/max: 400/4900 MHz Core speeds (MHz): 1: 798 2: 864
3: 809 4: 804 5: 808 6: 809 7: 796 8: 802
Graphics:
Device-1: Intel driver: i915 v: kernel
Display: x11 server: X.Org 1.20.5 driver: modesetting unloaded: fbdev,vesa
resolution: 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel UHD Graphics (Comet Lake 3x8 GT2)
v: 4.5 Mesa 19.2.8
Audio:
Device-1: Intel driver: snd_hda_intel
Sound Server: ALSA v: k4.15.0-1076-oem
Network:
Device-1: Intel driver: N/A
IF-ID-1: bnep0 state: unknown speed: N/A duplex: N/A
mac: 60:f2:62:a7:ea:49
Drives:
Local Storage: total: 476.94 GiB used: 46.12 GiB (9.7%)
ID-1: /dev/nvme0n1 vendor: Micron model: 2200S NVMe 512GB size: 476.94 GiB
Partition:
ID-1: / size: 462.78 GiB used: 46.09 GiB (10.0%) fs: ext4
dev: /dev/nvme0n1p3
Sensors:
System Temperatures: cpu: 40.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info:
Processes: 279 Uptime: 3m Memory: 15.36 GiB used: 1.45 GiB (9.4%)
Shell: bash inxi: 3.0.36
 

smooth_buddha

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the output of iwconfig is
lo no wireless extensions.

bnep0 no wireless extensions.

and the output of ifconfig is
bnep0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.44.194 netmask 255.255.255.0 broadcast 192.168.44.255
inet6 fe80::da89:e8e5:5b97:4e57 prefixlen 64 scopeid 0x20<link>
ether 60:f2:62:a7:ea:49 txqueuelen 1000 (Ethernet)
RX packets 7736 bytes 6016388 (6.0 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7403 bytes 915059 (915.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 771 bytes 68103 (68.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 771 bytes 68103 (68.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
it appears that the output of ifconfig is showing your bluetooth interface bnep0. its alllcoated an ip and appears to be up and running but sadly no wireless interface is picked up.

i think it could be a driver issue
 


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