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Thread: Persistent unclaimed Realtek controller

  1. #11
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    24,889
    Distro
    Ubuntu 19.04 Disco Dingo

    Re: Persistent unclaimed Realtek controller

    [ 21.334847] usb 2-2: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
    [ 29.404262] RTW: ERROR rtl8821c_fw_dl Download Firmware from array failed
    Ah, haaaa!

    Do you actually have the firmware file and with the right permissions?
    Code:
    ls -al /lib/firmware/rtlwifi | grep 8712
    Ideally, we'd like to see:
    Code:
    -rw-r--r--  1 root  root  122328 Mar 29  2017 rtl8712u.bin
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  2. #12
    Join Date
    Feb 2011
    Beans
    446
    Distro
    Ubuntu 18.04 Bionic Beaver

    Re: Persistent unclaimed Realtek controller

    Yes, it looks the same except for the date

    Code:
    ls -al /lib/firmware/rtlwifi | grep 8712
    -rw-r--r--  1 root root 122328 Mar 30  2017 rtl8712u.bin
    Edit: The USB wi-fi adapter wouldn't be making a mess of things would it? I'm just wondering with the right driver being there, and with the correct permissions etc, if that might be having some unintended effect.
    Last edited by MibunoOokami; 4 Weeks Ago at 09:39 PM.

  3. #13
    Join Date
    Feb 2011
    Beans
    446
    Distro
    Ubuntu 18.04 Bionic Beaver

    Re: Persistent unclaimed Realtek controller

    This is totally bizarre, the internet connection randomly dropped today and was unable to connect for several minutes, then the notice appeared saying there are wifi networks available and to select one. Checked it out and there was a double up of all available networks due to the internal wifi adapter suddenly working.


    I wasn’t doing anything on the PC at the time, just happened look up and see the disconnected internet connection, then the notification, so I’m completely clueless as to how the internal Realtek controller has started to work, especially after so many days since following your instructions. Saved me having to spend time moving the machine within reach of an ethernet cable to try re-installing the driver so that’s a bonus.


    Thanks for your help in solving this, it’s much appreciated.

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