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aahnik
Asked: 2020-10-13 10:29:10 +0800 CST

no Wifi Adapter found , earlier everything was working, not working suddenly wireless lan hard-blocked

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I am using Dell Inspiron 15, 3537 ( approx 7 yrs old )

I am having Ubuntu 20 lts. Every thing was fine.

My laptop hanged while uploading some large files, in bulky resource eating CHROME.

I tried every thing to stop the process.

But in vain.. No method known to human worked.

It was just froozen.

Now , with anger, I hit the Power button. Even that hanged.

After holding the power button for some time, finally it shut down.

After booting, every thing was quite the same. Except

image

my wifi , which was earlier working, had now stopped working.

You are reading me because I had a wire which you call ethernet cable

But now, leave every thing else, and please help me..

I am in deep agony..

Look at the results of some terminal commands

❯ sudo lshw -C network
[sudo] password for aahnik: 
  *-network                 
       description: Ethernet interface
       product: RTL810xE PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: enp1s0
       version: 07
       serial: 74:86:7a:37:59:7b
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 duplex=full firmware=rtl8106e-1_0.0.1 06/29/12 ip=192.168.1.7 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:18 ioport:3000(size=256) memory:b0600000-b0600fff memory:b0400000-b0403fff
  *-network DISABLED
       description: Wireless interface
       product: QCA9565 / AR9565 Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 01
       serial: 0c:84:dc:01:29:93
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=5.4.0-48-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:19 memory:b0500000-b057ffff memory:b0580000-b058ffff

hmm

❯ tail -f /var/log/messages
tail: cannot open '/var/log/messages' for reading: No such file or directory
tail: no files remaining

> iwconfig
lo      no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
enp1s0    no wireless extensions.

HELP !!

Dont worry about my date, its safely backed up.

Give me a solution other than re installing ubuntu

networking wireless 20.04 rfkill lshw

1 Answers

  1. hula lall la a

    I am overflowing with joy..

    BECOS I FOUND THE SOLUTION

    in my question I said, I forced shutdown.

    i earlier tried ctrl + alt + f1 to restart the display manager.

    image

    I read somewhere about this ctrl + alt + f1, but don't remember

    While pressing and throwing my impulse on the keys, I accidentally had pressed fn + f2 which unfortunately was the physical switch for hard blocking the wifi adapter.

    So my wireless plan got hard blocked.

    I read this

    image

    and then saw this

    IMG_20201013_111226

    Then I pressed Fn + F2. And heavens showered flowers upon me ...

    rfkill kills your misery

    so earlier

    0: dell-rbtn: Wireless LAN
    Soft blocked: yes
    Hard blocked: yes

    and now

    0: dell-rbtn: Wireless LAN
    Soft blocked: no
    Hard blocked: no

    do you know what is different bw my question and answer ?

    I had asked the question with my ethernet, and answering it with my wifi

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