No Wi-Fi Adapter found Ubuntu 18.04.3 LTS

Question

I have tried every solution that I found on internet, but none of them worked. I am using 5.0.0-37-generic kernel and running Ubuntu from my HP Notebook 15-db1103nm Laptop Here is my wireless info:

    ########## wireless info START ##########
    Report from: 06 Dec 2019 22:30 CET +0100
    Booted last: 06 Dec 2019 00:00 CET +0100
    Script from: 22 Oct 2018 03:34 UTC +0000
    ##### release ###########################

    Distributor ID: Ubuntu
    Description:    Ubuntu 18.04.3 LTS
    Release:    18.04
    Codename:   bionic

    ##### kernel ############################

    Linux 5.0.0-37-generic #40~18.04.1-Ubuntu SMP Thu Nov 14 12:06:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

    Parameters: ro, quiet, splash, vt.handoff=1

    ##### desktop ###########################

    Ubuntu

    ##### lspci #############################

    02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
        Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:85ea]
        Kernel driver in use: r8169

    03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
        Subsystem: Hewlett-Packard Company RTL8821CE 802.11ac PCIe Wireless Network Adapter [103c:831a]

    04:00.0 Non-Volatile memory controller [0108]: Toshiba America Info Systems Device [1179:0113] (rev 01)

    ##### lsusb #############################

    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 004: ID 0bda:b00a Realtek Semiconductor Corp. 
    Bus 003 Device 003: ID 0408:5365 Quanta Computer, Inc. 
    Bus 003 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 002: ID 04f3:0235 Elan Microelectronics Corp. 
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    ##### PCMCIA card info ##################

    ##### rfkill ############################

    0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no

    ##### secure boot #######################

    'mokutil' is not installed (package "mokutil").

    ##### lsmod #############################

    cfg80211              679936  0
    compat                 16384  1 cfg80211
    hp_wmi                 16384  0
    sparse_keymap          16384  1 hp_wmi
    wmi_bmof               16384  0
    wmi                    28672  2 hp_wmi,wmi_bmof

    ##### interfaces ########################

    [/etc/network/interfaces]
    auto lo
    iface lo inet loopback

    ##### ifconfig ##########################

    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
        link/loopback <MAC address> brd <MAC address>
        inet 127.0.0.1/8 scope host lo
           valid_lft forever preferred_lft forever
        inet6 ::1/128 scope host 
           valid_lft forever preferred_lft forever
    2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
        link/ether <MAC 'eno1' [IF1]> brd <MAC address>
        inet 192.168.0.21/24 brd 192.168.0.255 scope global dynamic noprefixroute eno1
           valid_lft 3053sec preferred_lft 3053sec
        inet6 fe80::58ef:6375:63c1:8351/64 scope link noprefixroute 
           valid_lft forever preferred_lft forever

    ##### iwconfig ##########################

    lo        no wireless extensions.

    eno1      no wireless extensions.

    ##### route #############################

    default via 192.168.0.1 dev eno1 proto dhcp metric 100 
    169.254.0.0/16 dev eno1 scope link metric 1000 
    192.168.0.0/24 dev eno1 proto kernel scope link src 192.168.0.21 metric 100 

    ##### resolv.conf #######################

    [777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']

    nameserver 127.0.0.53
    options edns0

    ##### network managers ##################

    Installed:

        NetworkManager

    Running:

    root       783     1  0 22:11 ?        00:00:00 /usr/sbin/NetworkManager --no-daemon

    ##### NetworkManager info ###############

    GENERAL.DEVICE:                         eno1
    GENERAL.TYPE:                           ethernet
    GENERAL.NM-TYPE:                        NMDeviceEthernet
    GENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.
    GENERAL.PRODUCT:                        RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
    GENERAL.DRIVER:                         r8169
    GENERAL.DRIVER-VERSION:                 --
    GENERAL.FIRMWARE-VERSION:               --
    GENERAL.HWADDR:                         <MAC 'eno1' [IF1]>
    GENERAL.MTU:                            1500
    GENERAL.STATE:                          100 (connected)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:01.2/0000:02:00.0/net/eno1
    GENERAL.IP-IFACE:                       eno1
    GENERAL.IS-SOFTWARE:                    no
    GENERAL.NM-MANAGED:                     yes
    GENERAL.AUTOCONNECT:                    yes
    GENERAL.FIRMWARE-MISSING:               no
    GENERAL.NM-PLUGIN-MISSING:              no
    GENERAL.PHYS-PORT-ID:                   --
    GENERAL.CONNECTION:                     Wired connection 1
    GENERAL.CON-UUID:                       c83eb0c8-2e39-3bc8-9301-b6ec6bce12c4
    GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/4
    GENERAL.METERED:                        no (guessed)
    CAPABILITIES.CARRIER-DETECT:            yes
    CAPABILITIES.SPEED:                     1000 Mb/s
    CAPABILITIES.IS-SOFTWARE:               no
    CAPABILITIES.SRIOV:                     no
    WIRED-PROPERTIES.CARRIER:               on
    IP4.ADDRESS[1]:                         192.168.0.21/24
    IP4.GATEWAY:                            192.168.0.1
    IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 192.168.0.1, mt = 100
    IP4.ROUTE[2]:                           dst = 192.168.0.0/24, nh = 0.0.0.0, mt = 100
    IP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
    IP4.DNS[1]:                             89.216.1.40
    IP4.DNS[2]:                             89.216.1.50
    DHCP4.OPTION[1]:                        requested_subnet_mask = 1
    DHCP4.OPTION[2]:                        requested_rfc3442_classless_static_routes = 1
    DHCP4.OPTION[3]:                        subnet_mask = 255.255.255.0
    DHCP4.OPTION[4]:                        domain_name_servers = 89.216.1.40 89.216.1.50
    DHCP4.OPTION[5]:                        ip_address = 192.168.0.21
    DHCP4.OPTION[6]:                        requested_static_routes = 1
    DHCP4.OPTION[7]:                        dhcp_server_identifier = 192.168.0.1
    DHCP4.OPTION[8]:                        default_ip_ttl = 64
    DHCP4.OPTION[9]:                        requested_time_offset = 1
    DHCP4.OPTION[10]:                       time_offset = 0
    DHCP4.OPTION[11]:                       broadcast_address = 192.168.0.255
    DHCP4.OPTION[12]:                       requested_interface_mtu = 1
    DHCP4.OPTION[13]:                       requested_domain_name_servers = 1
    DHCP4.OPTION[14]:                       dhcp_message_type = 5
    DHCP4.OPTION[15]:                       dhcp_rebinding_time = 3150
    DHCP4.OPTION[16]:                       requested_broadcast_address = 1
    DHCP4.OPTION[17]:                       routers = 192.168.0.1
    DHCP4.OPTION[18]:                       dhcp_renewal_time = 1800
    DHCP4.OPTION[19]:                       requested_domain_name = 1
    DHCP4.OPTION[20]:                       requested_routers = 1
    DHCP4.OPTION[21]:                       expiry = 1575670888
    DHCP4.OPTION[22]:                       requested_wpad = 1
    DHCP4.OPTION[23]:                       requested_netbios_scope = 1
    DHCP4.OPTION[24]:                       requested_ms_classless_static_routes = 1
    DHCP4.OPTION[25]:                       requested_netbios_name_servers = 1
    DHCP4.OPTION[26]:                       network_number = 192.168.0.0
    DHCP4.OPTION[27]:                       requested_domain_search = 1
    DHCP4.OPTION[28]:                       next_server = 192.168.0.1
    DHCP4.OPTION[29]:                       requested_ntp_servers = 1
    DHCP4.OPTION[30]:                       dhcp_lease_time = 3600
    DHCP4.OPTION[31]:                       requested_host_name = 1
    IP6.ADDRESS[1]:                         fe80::58ef:6375:63c1:8351/64
    IP6.GATEWAY:                            --
    IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
    IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256
    IP6.ROUTE[3]:                           dst = fe80::/64, nh = ::, mt = 100
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{1}
    CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   c83eb0c8-2e39-3bc8-9301-b6ec6bce12c4 | Wired connection 1

    ##### NetworkManager.state ##############

    [main]
    NetworkingEnabled=true
    WirelessEnabled=true
    WWANEnabled=true

    ##### NetworkManager config #############

    [[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
    [connection]
    wifi.powersave = 3

    [[/etc/NetworkManager/NetworkManager.conf]]
    [main]
    plugins=ifupdown,keyfile
    [ifupdown]
    managed=false
    [device]
    wifi.scan-rand-mac-address=no

    [[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
    [main]
    dns=systemd-resolved

    [[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
    [keyfile]
    unmanaged-devices=*,except:type:wifi,except:type:wwan

    [[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
    [connectivity]
    uri=http://connectivity-check.ubuntu.com/

    [[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
    [device-mac-addr-change-wifi]
    match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl
    wifi.scan-rand-mac-address=no
    wifi.cloned-mac-address=preserve
    ethernet.cloned-mac-address=preserve

    ##### NetworkManager profiles ###########

    ##### Netplan config ####################

    [/etc/netplan/01-network-manager-all.yaml]
    network:
      version: 2
      renderer: NetworkManager

    ##### iw reg get ########################

    Region: Europe/Belgrade (based on set time zone)

    global
    country 00: DFS-UNSET
        (2402 - 2472 @ 40), (N/A, 20), (N/A)
        (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

    ##### iwlist channels ###################

    lo        no frequency information.

    eno1      no frequency information.

    ##### iwlist scan #######################

    lo        Interface doesn't support scanning.

    eno1      Interface doesn't support scanning.

    ##### module infos ######################

    [cfg80211]
    filename:       /lib/modules/5.0.0-37-generic/updates/net/wireless/cfg80211.ko
    version:        iwlwifi-stack-public:master:8042:654c426c
    description:    wireless configuration support
    license:        GPL
    author:         Johannes Berg
    srcversion:     BCF157A5337A326CC2937B9
    depends:        compat
    retpoline:      Y
    name:           cfg80211
    vermagic:       5.0.0-37-generic SMP mod_unload 
    parm:           bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
    parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
    parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)

    ##### module parameters #################

    [cfg80211]
    bss_entries_limit: 1000
    cfg80211_disable_40mhz_24ghz: N
    ieee80211_regdom: 00

    ##### /etc/modules ######################

    ##### modprobe options ##################

    [/etc/modprobe.d/amd64-microcode-blacklist.conf]
    blacklist microcode

    [/etc/modprobe.d/blacklist-ath_pci.conf]
    blacklist ath_pci

    [/etc/modprobe.d/blacklist.conf]
    blacklist evbug
    blacklist usbmouse
    blacklist usbkbd
    blacklist eepro100
    blacklist de4x5
    blacklist eth1394
    blacklist snd_intel8x0m
    blacklist snd_aw2
    blacklist i2c_i801
    blacklist prism54
    blacklist bcm43xx
    blacklist garmin_gps
    blacklist asus_acpi
    blacklist snd_pcsp
    blacklist pcspkr
    blacklist amd76x_edac

    [/etc/modprobe.d/blacklist-rare-network.conf]
    alias net-pf-3 off
    alias net-pf-6 off
    alias net-pf-9 off
    alias net-pf-11 off
    alias net-pf-12 off
    alias net-pf-19 off
    alias net-pf-21 off
    alias net-pf-36 off

    [/etc/modprobe.d/intel-microcode-blacklist.conf]
    blacklist microcode

    [/etc/modprobe.d/iwlwifi.conf]
    remove iwlwifi \
    (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
    && /sbin/modprobe -r mac80211

    ##### rc.local ##########################

    grep: /etc/rc.local: No such file or directory

    ##### pm-utils ##########################

    ##### udev rules ########################

    ##### dmesg #############################

    [    3.463133] r8169 0000:02:00.0 eno1: Link is Down
    [    7.742859] r8169 0000:02:00.0 eno1: Link is Up - 1Gbps/Full - flow control rx/tx
    [    7.742879] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready
    [  517.970390] r8169 0000:02:00.0 eno1: Link is Down
    [  550.225866] r8169 0000:02:00.0 eno1: Link is Up - 100Mbps/Full - flow control rx/tx
    [  610.574063] r8169 0000:02:00.0 eno1: Link is Down
    [  619.678173] r8169 0000:02:00.0 eno1: Link is Up - 1Gbps/Full - flow control rx/tx
    [ 1058.568937] iwlwifi-stack-public:master:8enter code here042:654c426c

    ########## wireless info END ############

can you please format your post? See the formatting guide https://askubuntu.com/editing-help#comment-formatting — stratus, Dec 06 '19 at 23:46

score 1 · Answer 1 · answered Dec 07 '19 at 00:29

1

Here, this is what I have used for my RTL8821. It works perfectly.

Make sure that you have git and dkms installed (sudo apt install dkms git).

mkdir -p ~/build - create a dir to build in.

cd ~/build- cd into that dir

git clone https://github.com/tomaspinho/rtl8821ce.git- clone the repo that we need

cd rtl8821CU- cd into the new dir that we just cloned

sudo ./dkms-install.sh $USER - now build the package.

This may take a few minutes, depending on your hardware. When its done, you're wifi should be working. If not, comment and I'll continue to help. Cheers

answered Dec 07 '19 at 00:29

DPS

348

Ah, I just noticed you said CE, not CU. Ill update my answer with the proper git clone. – DPS Dec 07 '19 at 00:33
I would like to point out (if its not obvious by the name of the github) that this is not an official realtek driver. You can read more about it (which i suggest that you do, and not just trust strangers on the web) by copying and pasting that url into your web browser. cheers – DPS Dec 07 '19 at 00:36
Do I need to reboot after I have done all those operations or should it work right away? – Aleksandar Stojanovic Dec 07 '19 at 00:37
In my experience, i have to just unplug it then replug it if its a dongle. You may need to reboot since its PCIe. – DPS Dec 07 '19 at 00:38
also, after you reboot, go check the software and updates program, and look under the additional drivers tab. see if you see anything for the wifi adapter then. Had you checked that previously? Sometimes on new systems i have to manually install the drivers from that tab, by inserting a wifi dongle to get wifi access, and then going to that tab and selecting the driver and installing it. – DPS Dec 07 '19 at 00:40
Unfortunately, I rebooted and checked software and updates in additional drivers tab and it says "No additional drivers available". – Aleksandar Stojanovic Dec 07 '19 at 00:51
hmm, try doing this real quick sudo modprobe 8821ce. also, i guess that with this solution, it is required to have secure boot disabled in your bios – DPS Dec 07 '19 at 00:53
you may actually need to turn the secure boot off before you use the modprobe command – DPS Dec 07 '19 at 00:54
yeah, i guess that dkms modules will not work on systems with secure boot enabled. according to here: https://wiki.ubuntu.com/UEFI/SecureBoot/DKMS – DPS Dec 07 '19 at 00:55
In my BIOS menu I don't have secure boot option. Does it mean it is enabled/disabled or non of the above? – Aleksandar Stojanovic Dec 07 '19 at 01:15

No Wi-Fi Adapter found Ubuntu 18.04.3 LTS

1 Answers1