Home / ubuntu / Questions / 1077753
Accepted
Kar19
Asked: 2018-09-24 06:42:13 +0800 CST

Accidentally installed wrong network drivers on Ubuntu Desktop - How to set to default settings?

  • 772

I had a problem with the Bluetooth on my old Lenovo G500 and tried to install proper drivers for it.

I got to a point where I cannot connect to the wifi, I might have been too "adventurous" while trying too fix the Bluetooth issue.

Is there a way to restore wifi settings to the default ones as it was at the beginning?

Edit:

  potato@potato-Lenovo-G500:~$ dkms status
  bcmwl, 6.30.223.271+bdcom, 4.13.0-43-generic, x86_64: installed
  bcmwl, 6.30.223.271+bdcom, 4.13.0-45-generic, x86_64: installed
  btusb, 4.0, 4.13.0-45-generic, x86_64: installed
  rtlwifi-new, 0.10: added


  potato@potato-Lenovo-G500:~$ sudo lshw -class network
    *-network               
         description: Ethernet interface
         product: AR8162 Fast Ethernet
         vendor: Qualcomm Atheros
         physical id: 0
         bus info: pci@0000:01:00.0
         logical name: enp1s0
         version: 10
         serial: 20:1a:06:1f:9f:29
         capacity: 100Mbit/s
         width: 64 bits
         clock: 33MHz
         capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
         configuration: autonegotiation=on broadcast=yes driver=alx latency=0 link=no multicast=yes port=twisted pair
         resources: irq:16 memory:e0500000-e053ffff ioport:2000(size=128)
    *-network UNCLAIMED
         description: Network controller
         product: BCM43142 802.11b/g/n
         vendor: Broadcom Corporation
         physical id: 0
         bus info: pci@0000:02:00.0
         version: 01
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list
         configuration: latency=0
         resources: memory:e0400000-e0407fff
networking wireless drivers bluetooth

1 Answers

  1. Best Answer

    Regarding the wi-fi drivers...

    sudo dkms remove bcmwl/6.30.223.271+bdcom --all # remove this dkms driver
sudo dkms remove rtlwifi-new/0.10 --all         # remove this dkms driver

See `man dkms` for command assistance, if need be.

sudo apt-get update                             # update the software database
sudo apt-get install broadcom-sta-dkms          # install this dkms driver

dkms status                                     # review current dkms status

    Regarding the bluetooth drivers/problem...

    Please describe if your bluetooth problem got resolved with the installation of the btusb driver. What were you trying to fix?

    btusb, 4.0, 4.13.0-45-generic, x86_64: installed

    Update #1:

    btusb is not installed on your current kernel. You need to sudo dkms remove btusb/4.0 --all to get this old driver out of your system. Then find a current dkms driver and reinstall it on your current kernel.

    Also, check this out here.

    Update #2:

    The user is now booting to the 4.13 kernel, but still has kernel drivers that are not needed, or are not fully installed.

    The bcmwl driver needs replacement with the broadcom-sta-dkms driver, as per my previous instructions.

    If you're using a Realtek USB wireless dongle, then rtlwifi-new driver needs to have its install completed, with...

    sudo dkms install rtlwifi-new/0.10

    otherwise, you should remove it, as per my previous instructions.

    • 1