My network connections have disappeared

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benza435
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Posts: 6
Joined: Wed Feb 03, 2021 1:14 pm

My network connections have disappeared

Post by benza435 »

This morning I could not connect to the internet. This is the first time it has happened on this machine.
The network icon on the taskbar says 'no connection' when I hover over it, and there were no connections listed in network connections.

ifconfig did not show my wired or wireless connections, only the 'lo' connection and docker.

lshw -class network showed my network connections as 'disabled' which seemed to be resolved with ifconfig enp7s0 up and ifconfig wlp8s0 up, they now show up in ifconfig and network connections, but I can't get any traffic over them.

I have tried configuring a wifi connection unsuccessfully, and a wired connection to the router doesn't even show link lights.

Attached are some hopefully useful outputs. Please let me know if I need to provide anything else.

What should me next step be in getting this machine back online?

Thanks

Output from inixi -Fxxxrz

Code: Select all

System:    Kernel: 5.4.0-66-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 4.8.6 wm: muffin 4.8.1 
           dm: LightDM 1.30.0 Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal 
Machine:   Type: Laptop System: Acer product: Predator PH317-53 v: V1.05 serial: <filter> Chassis: type: 10 serial: <filter> 
           Mobo: CFL model: Alphard_CFS v: V1.05 serial: <filter> UEFI: Insyde v: 1.05 date: 07/04/2019 
Battery:   ID-1: BAT0 charge: 46.6 Wh condition: 49.6/49.6 Wh (100%) volts: 17.0/15.4 model: SMP KT00407009 AP18E7M 
           type: Li-ion serial: <filter> status: Charging 
CPU:       Topology: 6-Core model: Intel Core i7-9750H bits: 64 type: MT MCP arch: Kaby Lake rev: A L2 cache: 12.0 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 62399 
           Speed: 856 MHz min/max: 800/4500 MHz Core speeds (MHz): 1: 804 2: 808 3: 841 4: 842 5: 841 6: 836 7: 843 8: 806 
           9: 811 10: 875 11: 841 12: 841 
Graphics:  Device-1: Intel UHD Graphics 630 vendor: Acer Incorporated ALI driver: i915 v: kernel bus ID: 00:02.0 
           chip ID: 8086:3e9b 
           Device-2: NVIDIA TU116M [GeForce GTX 1660 Ti Mobile] vendor: Acer Incorporated ALI driver: nvidia v: 460.39 
           bus ID: 01:00.0 chip ID: 10de:2191 
           Display: x11 server: X.Org 1.20.9 driver: modesetting,nvidia unloaded: fbdev,nouveau,vesa 
           resolution: 1920x1080~144Hz 
           OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.6 compat-v: 3.1 direct render: Yes 
Audio:     Device-1: Intel Cannon Lake PCH cAVS vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
           chip ID: 8086:a348 
           Device-2: NVIDIA TU116 High Definition Audio vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel 
           bus ID: 01:00.1 chip ID: 10de:1aeb 
           Sound Server: ALSA v: k5.4.0-66-generic 
Network:   Device-1: Qualcomm Atheros Killer E2500 Gigabit Ethernet vendor: Acer Incorporated ALI driver: alx v: kernel 
           port: 3000 bus ID: 07:00.0 chip ID: 1969:e0b1 
           IF: enp7s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
           Device-2: Intel Wi-Fi 6 AX200 vendor: Bigfoot Networks driver: iwlwifi v: kernel port: 3000 bus ID: 08:00.0 
           chip ID: 8086:2723 
           IF: wlp8s0 state: down mac: <filter> 
           IF-ID-1: docker0 state: down mac: <filter> 
Drives:    Local Storage: total: 1.14 TiB used: 46.38 GiB (4.0%) 
           ID-1: /dev/nvme0n1 vendor: Western Digital model: PC SN720 SDAPNTW-256G-1014 size: 238.47 GiB speed: 31.6 Gb/s 
           lanes: 4 serial: <filter> rev: 10121000 scheme: GPT 
           ID-2: /dev/sda vendor: Seagate model: ST1000LM049-2GH172 size: 931.51 GiB speed: 6.0 Gb/s rotation: 7200 rpm 
           serial: <filter> rev: ACM1 temp: 35 C scheme: MBR 
Partition: ID-1: / size: 233.24 GiB used: 46.37 GiB (19.9%) fs: ext4 dev: /dev/nvme0n1p2 
Sensors:   System Temperatures: cpu: 38.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/google-chrome.list 
           1: deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http://packages.linuxmint.com ulyssa main upstream import backport #id:linuxmint_main
           2: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
           3: deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
           4: deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
           5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
           6: deb http://archive.canonical.com/ubuntu/ focal partner
Info:      Processes: 353 Uptime: 2d 5h 41m Memory: 15.49 GiB used: 1.84 GiB (11.9%) Init: systemd v: 245 runlevel: 5 
           Compilers: gcc: 9.3.0 alt: 8/9 Shell: bash v: 5.0.17 running in: gnome-terminal inxi: 3.0.38
Output from lshw -class network

Code: Select all

  *-network
       description: Ethernet interface
       product: Killer E2500 Gigabit Ethernet Controller
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: enp7s0
       version: 10
       serial: 7c:d3:0a:81:ff:81
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=alx duplex=full ip=255.255.255.0 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:16 memory:b4400000-b443ffff ioport:3000(size=128)
  *-network
       description: Wireless interface
       product: Wi-Fi 6 AX200
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: wlp8s0
       version: 1a
       serial: 38:00:25:83:60:a8
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.4.0-66-generic firmware=48.4fa0041f.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:17 memory:b4300000-b4303fff
Ooutput from ifconfig -a

Code: Select all

docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 02:42:61:e2:41:6d  txqueuelen 0  (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

enp7s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 255.255.255.0  netmask 255.255.255.255  broadcast 0.0.0.0
        inet6 fe80::7ed3:aff:fe81:ff81  prefixlen 64  scopeid 0x20<link>
        ether 7c:d3:0a:81:ff:81  txqueuelen 1000  (Ethernet)
        RX packets 614  bytes 56940 (56.9 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 59  bytes 9035 (9.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  

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 101606  bytes 12027530 (12.0 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 101606  bytes 12027530 (12.0 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp8s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 38:00:25:83:60:a8  txqueuelen 1000  (Ethernet)
        RX packets 6624916  bytes 5040674880 (5.0 GB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2966721  bytes 1403117219 (1.4 GB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
Attachments
lshw_network.txt
(1.29 KiB) Downloaded 28 times
inxi.txt
(4.07 KiB) Downloaded 17 times
ifconfig.txt
(1.53 KiB) Downloaded 32 times
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
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sleeper12
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Posts: 14609
Joined: Thu May 25, 2017 3:22 pm

Re: My network connections have disappeared

Post by sleeper12 »

Let's see:

Code: Select all

 rfkill list && iwconfig && mokutil --sb-state
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benza435
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Posts: 6
Joined: Wed Feb 03, 2021 1:14 pm

Re: My network connections have disappeared

Post by benza435 »

Code: Select all

ben@acer:~$ rfkill list && iwconfig && mokutil --sb-state
0: acer-wireless: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: acer-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
6: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
lo        no wireless extensions.

enp7s0    no wireless extensions.

wlp8s0    IEEE 802.11  ESSID:"vodafoneA4B157"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 20:B0:01:A4:B1:57   
          Bit Rate=130 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=70/70  Signal level=-34 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:40   Missed beacon:0

docker0   no wireless extensions.

SecureBoot disabled
Platform is in Setup Mode
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benza435
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Posts: 6
Joined: Wed Feb 03, 2021 1:14 pm

Re: My network connections have disappeared

Post by benza435 »

a minute or so before I ran this, I tried

Code: Select all

sudo service network-manager restart
.

I've just started getting internet notifications again, so I'm not sure which one brought it back?
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sleeper12
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Posts: 14609
Joined: Thu May 25, 2017 3:22 pm

Re: My network connections have disappeared

Post by sleeper12 »

So, ethernet & wifi are both working now?
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benza435
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Joined: Wed Feb 03, 2021 1:14 pm

Re: My network connections have disappeared

Post by benza435 »

Yes!
I had already ran service network-manager restart earlier today, with no effect, so not sure why it worked this time...
Im also comfused about why this happened in the first place but i guess thats a big job.
Thanks for jumping in, sorry if i wasted your time :cry:
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sleeper12
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Level 21
Posts: 14609
Joined: Thu May 25, 2017 3:22 pm

Re: My network connections have disappeared

Post by sleeper12 »

No problem, glad you got it going. One thing you can do is turn power management off so it won't cause wifi problems:

Code: Select all

 sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
Reboot
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