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Thread: No Wifi Adapter Found in Ubuntu 18.04?

  1. #1

    No Wifi Adapter Found in Ubuntu 18.04?

    Hello, I am running ubuntu 18.04, kernel 5.4.0-42-generic. Last week, the internet randomly stopped working. Turns out the network manager somehow disappeared, so I downloaded the debians on another computer, transferred via USB, and then installed. Now my ethernet works, but my wifi is still not working. When I go to settings and click on wifi, it lists "no wifi adapter found". I figure this must be a software issue, because the wifi was working two weeks ago. I have tried updating the computer, both from command line and software center, but this has not solved the problem.

    Code:
    sudo lshw -C network
    produces:
    Code:
    *-network UNCLAIMED       
           description: Network controller
           product: Wireless 8265 / 8275
           vendor: Intel Corporation
           physical id: 0
           bus info: pci@0000:6c:00.0
           version: 78
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress cap_list
           configuration: latency=0
           resources: memory:dc500000-dc501fff
      *-network
           description: Ethernet interface
           physical id: 2
           logical name: enx106530d24185
           serial: 10:65:30:d2:41:85
           size: 1Gbit/s
           capacity: 1Gbit/s
           capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
           configuration: autonegotiation=on broadcast=yes driver=r8152  driverversion=v1.10.11 duplex=full ip=192.168.1.113 link=yes  multicast=yes port=MII speed=1Gbit/s
    Based on that output, I found this driver here: https://linux-hardware.org/index.php...24fd-8086-9010 that I think is the right one for my wifi adapter. Unfortunately, I'm not sure how to install it. I downloaded the file, and went into software and updates-->additional drivers. Here, I can see listed:

    Code:
    Intel Corporation: Wireless 8265/8275
    This device is not working.
    (option 1) Using iwlwifi driver backport in DKMS format from backport-iwlwifi-dkms (open source)
    (option 2) Continue using a manually installed driver
    (option 3) Do not use the device
    Option 3 is selected, and the other two are greyed out. The "revert" and "apply changes" buttons at the bottom are also greyed out.

    Code:
    sudo modprobe iwlwifi
    produces:
    Code:
    modprobe: ERROR: could not insert 'iwlwifi': Operation not permitted
    I tried running in su prompt as well, with the same result.

    Code:
    uname -r
    produces:
    Code:
    5.4.0-42-generic
    Code:
    modinfo iwlwifi | grep filename
    produces:
    Code:
    filename:       /lib/modules/5.4.0-42-generic/updates/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko
    Finally, I tried booting from the previous kernel, but encountered the same problem there as well--"no wifi adapter found".dr

    Any suggestions? Help would be greatly appreciated!

  2. #2
    Join Date
    Feb 2020
    Beans
    104

    Re: No Wifi Adapter Found in Ubuntu 18.04?

    Some laptops have a switch that will turn wifi off. Have you checked that?

  3. #3
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,644
    Distro
    Ubuntu Development Release

    Re: No Wifi Adapter Found in Ubuntu 18.04?

    Please try:

    Code:
    sudo apt purge backport-iwlwifi-dkms
    Reboot and show us:

    Code:
    sudo modprobe iwlwifi
    dmesg | grep iwl
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  4. #4

    Re: No Wifi Adapter Found in Ubuntu 18.04?

    Code:
    sudo apt purge backport-iwlwifi-dkms
    produces:
    Code:
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    Package 'backport-iwlwifi-dkms' is not installed, so not removed
    The following packages were automatically installed and are no longer required:
      libllvm9 libpkcs11-helper1 linux-hwe-5.4-headers-5.4.0-42 linux-hwe-5.4-headers-5.4.0-45
      linux-hwe-5.4-headers-5.4.0-47 linux-hwe-5.4-headers-5.4.0-48 openvpn
    Use 'sudo apt autoremove' to remove them.
    0 upgraded, 0 newly installed, 0 to remove and 215 not upgraded.
    After reboot,
    Code:
    sudo modprobe iwlwifi
    still returns:
    Code:
    modprobe: ERROR: could not insert 'iwlwifi': Operation not permitted
    (even when I try it within su)

    Finally,
    Code:
    dmesg | grep iwl
    returns nothing

  5. #5
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,644
    Distro
    Ubuntu Development Release

    Re: No Wifi Adapter Found in Ubuntu 18.04?

    Will you please try again with Secure Boot disabled in the BIOS/EFI and try again?
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  6. #6

    Re: No Wifi Adapter Found in Ubuntu 18.04?

    Ah, awesome! Got a response now:

    Code:
    sudo modprobe iwlwifi
    then
    Code:
    dmesg | grep iwl
    produces:
    Code:
    [    3.312635] Loading modules backported from iwlwifi
    [    3.312636] iwlwifi-stack-public:master:8613:3ae69204
    [    3.382165] iwlwifi 0000:6c:00.0: enabling device (0000 -> 0002)
    [    3.399383] iwlwifi 0000:6c:00.0: loaded firmware version 36.9f0a2d68.0 8265-36.ucode op_mode iwlmvm
    [    3.589837] iwlwifi 0000:6c:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230
    [    3.596193] iwlwifi 0000:6c:00.0: reporting RF_KILL (radio disabled)
    [    3.660939] iwlwifi 0000:6c:00.0: base HW address: 7c:2a:31:11:03:46
    [    3.674861] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [    3.918748] iwlwifi 0000:6c:00.0 wlp108s0: renamed from wlan0
    [    4.121710] iwlwifi 0000:6c:00.0: RF_KILL bit toggled to enable radio.
    [    4.121711] iwlwifi 0000:6c:00.0: reporting RF_KILL (radio enabled)
    [    6.646626] iwlwifi 0000:6c:00.0: RF_KILL bit toggled to disable radio.
    [    6.646627] iwlwifi 0000:6c:00.0: reporting RF_KILL (radio disabled)
    [    6.925963] WARNING: CPU: 7 PID: 128 at /var/lib/dkms/backport-iwlwifi/git/build/drivers/net/wireless/intel/iwlwifi/pcie/trans.c:2111 iwl_trans_pcie_grab_nic_access+0x14a/0x1e0 [iwlwifi]
    [    6.925964] Modules linked in: aufs overlay ftdi_sio usbserial wacom binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi snd_usb_audio snd_usbmidi_lib snd_hda_codec_realtek snd_hda_codec_generic mei_hdcp cdc_ether usbnet r8152 mii dell_rbtn intel_rapl_msr dell_laptop ledtrig_audio dell_smm_hwmon snd_hda_intel snd_intel_dspcfg x86_pkg_temp_thermal snd_hda_codec intel_powerclamp snd_hda_core coretemp snd_hwdep snd_pcm kvm_intel snd_seq_midi snd_seq_midi_event kvm crct10dif_pclmul iwlmvm(OE) crc32_pclmul joydev snd_rawmidi ghash_clmulni_intel mac80211(OE) aesni_intel snd_seq libarc4 crypto_simd cryptd glue_helper dell_wmi dell_smbios snd_seq_device snd_timer dcdbas rapl intel_cstate snd iwlwifi(OE) input_leds serio_raw rtsx_pci_ms soundcore wmi_bmof intel_wmi_thunderbolt dell_wmi_descriptor cfg80211(OE) memstick hid_multitouch hid_sensor_gyro_3d hid_sensor_accel_3d hid_sensor_magn_3d hid_sensor_als compat(OE) hid_sensor_rotation hid_sensor_incl_3d hid_sensor_trigger industrialio_triggered_buffer
    [    6.926024] RIP: 0010:iwl_trans_pcie_grab_nic_access+0x14a/0x1e0 [iwlwifi]
    [    6.926038]  iwl_write_prph+0x3d/0x90 [iwlwifi]
    [    6.926044]  iwl_fw_dbg_stop_restart_recording+0x150/0x240 [iwlwifi]
    [    6.926054]  ? iwl_mvm_rm_sta_common+0x54/0xb0 [iwlmvm]
    [    6.926059]  iwl_fw_dbg_stop_sync+0x3a/0x40 [iwlwifi]
    [    6.926064]  ? iwl_fw_dbg_stop_sync+0x3a/0x40 [iwlwifi]
    [    6.926069]  __iwl_mvm_mac_stop+0x83/0x160 [iwlmvm]
    [    6.926073]  iwl_mvm_mac_stop+0x6e/0x90 [iwlmvm]
    [    6.926166] iwlwifi 0000:6c:00.0: iwlwifi transaction failed, dumping registers
    [    6.926168] iwlwifi 0000:6c:00.0: iwlwifi device config registers:
    [    6.926634] iwlwifi 0000:6c:00.0: 00000000: 24fd8086 00100406 02800078 00000000 dc500004 00000000 00000000 00000000
    [    6.926636] iwlwifi 0000:6c:00.0: 00000020: 00000000 00000000 00000000 01508086 00000000 000000c8 00000000 000001ff
    [    6.926637] iwlwifi 0000:6c:00.0: 00000040: 00020010 10008ec0 00190c10 0045e811 10110142 00000000 00000000 00000000
    [    6.926639] iwlwifi 0000:6c:00.0: 00000060: 00000000 00080812 00000405 00000000 00010001 00000000 00000000 00000000
    [    6.926640] iwlwifi 0000:6c:00.0: 00000080: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.926641] iwlwifi 0000:6c:00.0: 000000a0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.926642] iwlwifi 0000:6c:00.0: 000000c0: 00000000 00000000 c823d001 0d000000 00814005 fee00478 00000000 00000000
    [    6.926643] iwlwifi 0000:6c:00.0: 000000e0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.926644] iwlwifi 0000:6c:00.0: 00000100: 14010001 00000000 00000000 00462031 00000000 00002000 00000000 00000000
    [    6.926645] iwlwifi 0000:6c:00.0: 00000120: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.926647] iwlwifi 0000:6c:00.0: 00000140: 14c10003 ff110346 7c2a31ff 15410018 10031003 0001001e 00481e1f 40a0000f
    [    6.926648] iwlwifi 0000:6c:00.0: iwlwifi device memory mapped registers:
    [    6.926963] iwlwifi 0000:6c:00.0: 00000000: 00080000 00000000 00000000 00000000 00000000 00000000 00000010 00000000
    [    6.926964] iwlwifi 0000:6c:00.0: 00000020: 00000011 00000008 00000230 d55555d5 d55555d5 d55555d5 80008040 001f0042
    [    6.927016] iwlwifi 0000:6c:00.0: iwlwifi device AER capability structure:
    [    6.927039] iwlwifi 0000:6c:00.0: 00000000: 14010001 00000000 00000000 00462031 00000000 00002000 00000000 00000000
    [    6.927040] iwlwifi 0000:6c:00.0: 00000020: 00000000 00000000 00000000
    [    6.927041] iwlwifi 0000:6c:00.0: iwlwifi parent port (0000:00:1c.7) config registers:
    [    6.927145] iwlwifi 0000:00:1c.7: 00000000: 9d178086 00100407 060400f1 00810000 00000000 00000000 006c6c00 200000f0
    [    6.927147] iwlwifi 0000:00:1c.7: 00000020: dc50dc50 0001fff1 00000000 00000000 00000000 00000040 00000000 001204ff
    [    6.927148] iwlwifi 0000:00:1c.7: 00000040: 01428010 00008001 00100000 08724813 70110042 005cb200 01480000 00000000
    [    6.927150] iwlwifi 0000:00:1c.7: 00000060: 00000000 00000837 00000400 0000000e 00010003 00000000 00000000 00000000
    [    6.927151] iwlwifi 0000:00:1c.7: 00000080: 00019005 fee00298 00000000 00000000 0000a00d 081d1028 00000000 00000000
    [    6.927152] iwlwifi 0000:00:1c.7: 000000a0: c8030001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927154] iwlwifi 0000:00:1c.7: 000000c0: 00000000 00000000 00000000 00000000 07001001 00001842 899e0008 00000000
    [    6.927155] iwlwifi 0000:00:1c.7: 000000e0: 00630300 00000000 00100016 00000000 00000150 4c000000 08410fb3 04000004
    [    6.927157] iwlwifi 0000:00:1c.7: 00000100: 14010001 00000000 00010000 00060011 00000000 00002000 00000000 00000000
    [    6.927158] iwlwifi 0000:00:1c.7: 00000120: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927160] iwlwifi 0000:00:1c.7: 00000140: 2001000d 0000000f 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927161] iwlwifi 0000:00:1c.7: 00000160: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927162] iwlwifi 0000:00:1c.7: 00000180: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927164] iwlwifi 0000:00:1c.7: 000001a0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927165] iwlwifi 0000:00:1c.7: 000001c0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927166] iwlwifi 0000:00:1c.7: 000001e0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [    6.927167] iwlwifi 0000:00:1c.7: 00000200: 2201001e 00b0281f 40a0280f
    [    6.927171] iwlwifi 0000:6c:00.0: iwlwifi root port (0000:00:1c.7) AER cap structure:
    [    6.927180] iwlwifi 0000:00:1c.7: 00000000: 14010001 00000000 00010000 00060011 00000000 00002000 00000000 00000000
    [    6.927181] iwlwifi 0000:00:1c.7: 00000020: 00000000 00000000 00000000 00000000 00000000 00000000
    [    7.219542] WARNING: CPU: 7 PID: 128 at /var/lib/dkms/backport-iwlwifi/git/build/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c:1331 __iwl_mvm_mac_stop+0x15b/0x160 [iwlmvm]
    [    7.219542] Modules linked in: aufs overlay ftdi_sio usbserial wacom binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi snd_usb_audio snd_usbmidi_lib snd_hda_codec_realtek snd_hda_codec_generic mei_hdcp cdc_ether usbnet r8152 mii dell_rbtn intel_rapl_msr dell_laptop ledtrig_audio dell_smm_hwmon snd_hda_intel snd_intel_dspcfg x86_pkg_temp_thermal snd_hda_codec intel_powerclamp snd_hda_core coretemp snd_hwdep snd_pcm kvm_intel snd_seq_midi snd_seq_midi_event kvm crct10dif_pclmul iwlmvm(OE) crc32_pclmul joydev snd_rawmidi ghash_clmulni_intel mac80211(OE) aesni_intel snd_seq libarc4 crypto_simd cryptd glue_helper dell_wmi dell_smbios snd_seq_device snd_timer dcdbas rapl intel_cstate snd iwlwifi(OE) input_leds serio_raw rtsx_pci_ms soundcore wmi_bmof intel_wmi_thunderbolt dell_wmi_descriptor cfg80211(OE) memstick hid_multitouch hid_sensor_gyro_3d hid_sensor_accel_3d hid_sensor_magn_3d hid_sensor_als compat(OE) hid_sensor_rotation hid_sensor_incl_3d hid_sensor_trigger industrialio_triggered_buffer
    [    7.219631] RIP: 0010:__iwl_mvm_mac_stop+0x15b/0x160 [iwlmvm]
    [    7.219648]  iwl_mvm_mac_stop+0x6e/0x90 [iwlmvm]

  7. #7

    Re: No Wifi Adapter Found in Ubuntu 18.04?

    I'm sorry, morrownr, I didn't see your response at first. There is an airplane mode switch on my laptop. It was off, but I tried turning it on, and then off, and that appears to have fixed the problem! My wifi is working now!

    Thank you both for your help!

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