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Wireless card no longer detected
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bunchily
n00b
n00b


Joined: 18 Jan 2022
Posts: 6

PostPosted: Thu Feb 03, 2022 9:40 am    Post subject: Wireless card no longer detected Reply with quote

Hello there,

Possibly this message may belong better in 'Networking & Security' - it's a bit of both and wasn't too sure. Anyway . . .

Some time in 2021, my Gentoo-powered laptop decided to stop recognising the wireless network card. I looked into this and all the recent updates done, but was unable to get to the bottom of it, so resorted to using an ancient, clunky, but still working backup Gentoo laptop.

I've now decided to return to the faulty laptop and try and work out what on earth is going on (using an ethernet cable). The thing is, the wireless card is detected at boot and works for a few minutes absolutely fine. But then, after a while, it just seems to disappear, as far as the kernel is concerned anyway.

Here's the output when I try to run /etc/init.d/net.wlp1s0 start:

Code:
 * Bringing up interface wlp1s0
 *   ERROR: interface wlp1s0 does not exist
 *   Ensure that you have loaded the correct kernel module for your hardware
 * ERROR: net.wlp1s0 failed to start


The correct kernel WAS loaded for this network card, as it had been working previously, so what's happened?!

This might be useful - this is the output from lsmod:

Code:

Module                  Size  Used by
btusb                  49152  0
btrtl                  16384  1 btusb
btbcm                  16384  1 btusb
btintel                20480  1 btusb
bluetooth             425984  27 btrtl,btintel,btbcm,btusb
ecdh_generic           16384  2 bluetooth
ecc                    28672  1 ecdh_generic
vboxnetflt             32768  0
vboxnetadp             28672  0
vboxdrv               425984  2 vboxnetadp,vboxnetflt
iwlmvm                339968  0
mac80211              700416  1 iwlmvm
iwlwifi               319488  1 iwlmvm
x86_pkg_temp_thermal    20480  0
cfg80211              688128  3 iwlmvm,iwlwifi,mac80211


So I'm a bit baffled. Is it time to say goodbye to this laptop? Could it be a hardware fault? I was thinking about booting up with some other distro using an .iso image on a USB drive, just to see if the network card is detected and remains that way. Would that be a useful exercise?! It is getting on for 6 years old but, apart from a few dodgy keys on the keyboard, is otherwise working absolutely fine.

Many thanks in advance.

jonath
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DawgG
l33t
l33t


Joined: 17 Sep 2003
Posts: 874

PostPosted: Thu Feb 03, 2022 1:05 pm    Post subject: Reply with quote

i think your hardware should be well-supported (by now).
  • check bios-settings ("exotic" wireless/network-settings) and "hotkeys"
  • check that you did not accidentally switch wireless of with a hotkey or hardware-switch
  • check dmesg for anything related to wireless and the interface name
  • check for any programs/services that might automagically (re)configure your network, rename interfaces etc
  • find out the exact harware revision (lspci) and check your kernel/module-settings and maybe get the latest/correct firmware

maybe the hardware is broken, so booting with a live-distro might be a good idea. if it works, you can find out wich softare/settings are needed.
GOOD LUCK!
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DUMM KLICKT GUT.
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