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Thread: Unable to enable Wireless on Lenovo L340

  1. #1
    Join Date
    Dec 2019
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    Unable to enable Wireless on Lenovo L340

    Hi,
    I have a Lenovo L340-15IWL laptop running Ubuntu 18.04.03.
    Code:
    Distributor ID:    Ubuntu
    Description:    Ubuntu 18.04.3 LTS
    Release:    18.04
    Codename:    bionic
    Some days ago, my trackpad magically stopped working. It just refused to recognise the track-pad. So I googled around a bit and found a post saying upgrading the kernel will help. So I upgraded my kernel to
    Code:
    4.19.15-041915-generic
    .

    But after this, although my trackpad started working, the wireless module completely stopped working. It started showing "No Wi-Fi adapter Found" in the wireless tab in settings.
    Since I already had Windows sideloaded on this, I fired that up and confirmed that wireless works fine. The device manager there shows "Intel 9462" is the wireless module.

    lshw -C network shows this as a description for wireless.
    Code:
      *-network UNCLAIMED       
           description: Network controller
           product: Intel Corporation
           vendor: Intel Corporation
           physical id: 14.3
           bus info: pci@0000:00:14.3
           version: 30
           width: 64 bits
           clock: 33MHz
           capabilities: cap_list
           configuration: latency=0
           resources: memory:a1218000-a121bfff
    I tried copying firmware from intel's website https://www.intel.com/content/www/us...etworking.html and pasting it to
    Code:
    /lib/firmware/
    but that only made the wireless adapter constantly switch on and off. As of now, I have removed all files with iwl*.ucode from the /lib/firmware/ folder and moved them elsewhere. So the wireless adapter switching on/off has stopped and my system now says that I have no wireless adapter.

    Could anyone help me with finding the right driver for this wireless adapter and the procedure to fix the issue please?

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,022
    Distro
    Ubuntu 19.10 Eoan Ermine

    Re: Unable to enable Wireless on Lenovo L340

    The driver will not ever work without proper firmware. Please move the firmware back and reboot. Next, run and post:
    Code:
    sudo modprobe iwlwifi
    dmesg | grep iwl
    lspci -nnk | grep 0280 -A3
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  3. #3
    Join Date
    Dec 2019
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    Re: Unable to enable Wireless on Lenovo L340

    Quote Originally Posted by chili555 View Post
    The driver will not ever work without proper firmware. Please move the firmware back and reboot. Next, run and post:
    Code:
    sudo modprobe iwlwifi
    dmesg | grep iwl
    lspci -nnk | grep 0280 -A3
    This is the list of firmware I have in my /lib/firmware location
    Code:
    -Lenovo-IdeaPad-L340-15IWL:/lib/firmware$ ls iwl*.ucode
    iwlwifi-1000-5.ucode   iwlwifi-3168-29.ucode    iwlwifi-7260-9.ucode    iwlwifi-8000C-13.ucode             iwlwifi-9000-pu-b0-jf-b0-41.ucode
    iwlwifi-100-5.ucode    iwlwifi-3945-2.ucode     iwlwifi-7265-10.ucode   iwlwifi-8000C-16.ucode             iwlwifi-9000-pu-b0-jf-b0-43.ucode
    iwlwifi-105-6.ucode    iwlwifi-4965-2.ucode     iwlwifi-7265-12.ucode   iwlwifi-8000C-21.ucode             iwlwifi-9260-th-b0-jf-b0-33.ucode
    iwlwifi-135-6.ucode    iwlwifi-5000-5.ucode     iwlwifi-7265-13.ucode   iwlwifi-8000C-22.ucode             iwlwifi-9260-th-b0-jf-b0-34.ucode
    iwlwifi-2000-6.ucode   iwlwifi-5150-2.ucode     iwlwifi-7265-16.ucode   iwlwifi-8000C-27.ucode             iwlwifi-9260-th-b0-jf-b0-38.ucode
    iwlwifi-2030-6.ucode   iwlwifi-6000-4.ucode     iwlwifi-7265-17.ucode   iwlwifi-8000C-31.ucode             iwlwifi-9260-th-b0-jf-b0-41.ucode
    iwlwifi-3160-10.ucode  iwlwifi-6000g2a-5.ucode  iwlwifi-7265-8.ucode    iwlwifi-8000C-34.ucode             iwlwifi-9260-th-b0-jf-b0-43.ucode
    iwlwifi-3160-12.ucode  iwlwifi-6000g2a-6.ucode  iwlwifi-7265-9.ucode    iwlwifi-8000C-36.ucode             iwlwifi-9260-th-b0-jf-b0-46.ucode
    iwlwifi-3160-13.ucode  iwlwifi-6000g2b-6.ucode  iwlwifi-7265D-10.ucode  iwlwifi-8265-21.ucode              iwlwifi-cc-a0-46.ucode
    iwlwifi-3160-16.ucode  iwlwifi-6050-5.ucode     iwlwifi-7265D-12.ucode  iwlwifi-8265-22.ucode              iwlwifi-cc-a0-48.ucode
    iwlwifi-3160-17.ucode  iwlwifi-7260-10.ucode    iwlwifi-7265D-13.ucode  iwlwifi-8265-27.ucode              iwlwifi-Qu-b0-hr-b0-48.ucode
    iwlwifi-3160-7.ucode   iwlwifi-7260-12.ucode    iwlwifi-7265D-16.ucode  iwlwifi-8265-31.ucode              iwlwifi-Qu-b0-jf-b0-48.ucode
    iwlwifi-3160-8.ucode   iwlwifi-7260-13.ucode    iwlwifi-7265D-17.ucode  iwlwifi-8265-34.ucode              iwlwifi-Qu-c0-hr-b0-48.ucode
    iwlwifi-3160-9.ucode   iwlwifi-7260-16.ucode    iwlwifi-7265D-21.ucode  iwlwifi-8265-36.ucode              iwlwifi-Qu-c0-jf-b0-48.ucode
    iwlwifi-3168-21.ucode  iwlwifi-7260-17.ucode    iwlwifi-7265D-22.ucode  iwlwifi-9000-pu-b0-jf-b0-33.ucode  iwlwifi-QuZ-a0-hr-b0-48.ucode
    iwlwifi-3168-22.ucode  iwlwifi-7260-7.ucode     iwlwifi-7265D-27.ucode  iwlwifi-9000-pu-b0-jf-b0-34.ucode  iwlwifi-QuZ-a0-jf-b0-48.ucode
    iwlwifi-3168-27.ucode  iwlwifi-7260-8.ucode     iwlwifi-7265D-29.ucode  iwlwifi-9000-pu-b0-jf-b0-38.ucode
    Output of grep iwl I have attached in the text file.


    Code:
    lspci -nnk | grep 0280 -A300:14.3 Network controller [0280]: Intel Corporation Device [8086:9df0] (rev 30)
        Subsystem: Intel Corporation Device [8086:02a4]
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi
    Attached Files Attached Files

  4. #4
    Join Date
    Aug 2005
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    25,022
    Distro
    Ubuntu 19.10 Eoan Ermine

    Re: Unable to enable Wireless on Lenovo L340

    This will be a little bit of a long shot because your device is so new, detailed information, bug reports, forum posts, etc. are sparse.

    With a working internet connection by ethernet, tethered or whatever means possible, please do:

    Code:
    wget http://mirrors.kernel.org/ubuntu/pool/main/l/linux-firmware/linux-firmware_1.183_all.deb
    sudo dpkg -i linux*.deb
    sudo apt update
    sudo apt install linux-oem-osp1
    Reboot and show us:
    Code:
    dmesg | grep iwl
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  5. #5
    Join Date
    Dec 2019
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    Re: Unable to enable Wireless on Lenovo L340

    Quote Originally Posted by chili555 View Post
    Reboot and show us:
    Code:
    dmesg | grep iwl
    It worked!

    uname -r shows kernel version
    Code:
    5.0.0-1030-oem-osp1
    Output as below:
    Code:
    Lenovo-IdeaPad-L340-15IWL:~$ dmesg | grep iwl
    [   11.780046] iwlwifi 0000:00:14.3: Found debug destination: EXTERNAL_DRAM
    [   11.780048] iwlwifi 0000:00:14.3: Found debug configuration: 0
    [   11.780457] iwlwifi 0000:00:14.3: loaded firmware version 46.6bf1df06.0 op_mode iwlmvm
    [   12.185189] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9462, REV=0x318
    [   12.192645] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
    [   12.192987] iwlwifi 0000:00:14.3: Allocated 0x00400000 bytes for firmware monitor.
    [   12.234147] iwlwifi 0000:00:14.3: base HW address: XX:XX:XX:XX:XX:XX
    [   12.410448] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [   12.581222] iwlwifi 0000:00:14.3 wlp0s20f3: renamed from wlan0
    [   41.924305] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
    [   42.016713] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
    [   42.082485] iwlwifi 0000:00:14.3: FW already configured (0) - re-configuring
    [   42.093149] iwlwifi 0000:00:14.3: Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)
    [   42.100163] iwlwifi 0000:00:14.3: BIOS contains WGDS but no WRDS
    [   46.696206] iwlwifi 0000:00:14.3 wlp0s20f3: disabling HT as WMM/QoS is not supported by the AP
    [   46.696210] iwlwifi 0000:00:14.3 wlp0s20f3: disabling VHT as WMM/QoS is not supported by the AP
    [  507.070454] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
    [  507.167279] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
    [  507.232672] iwlwifi 0000:00:14.3: FW already configured (0) - re-configuring
    [  507.242867] iwlwifi 0000:00:14.3: Conflict between TLV & NVM regarding enabling LAR (TLV = enabled NVM =disabled)
    [  507.250280] iwlwifi 0000:00:14.3: BIOS contains WGDS but no WRDS
    [  510.769539] iwlwifi 0000:00:14.3 wlp0s20f3: disabling HT as WMM/QoS is not supported by the AP
    [  510.769541] iwlwifi 0000:00:14.3 wlp0s20f3: disabling VHT as WMM/QoS is not supported by the AP
    [  511.135488] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
    [  512.056075] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
    [  518.917891] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
    [  519.122302] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
    [  519.839906] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
    [  520.248019] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
    Wireless is up, can detect and connect to networks, trackpad is working too.

    Thank you!

  6. #6
    Join Date
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    Ubuntu 19.10 Eoan Ermine

    Re: Unable to enable Wireless on Lenovo L340

    Awesome! Glad it’s working. The searchers will appreciate your report.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  7. #7
    Join Date
    Aug 2005
    Location
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    Distro
    Ubuntu 19.10 Eoan Ermine

    Re: Unable to enable Wireless on Lenovo L340

    Please note in your dmesg:

    [ 510.769539] iwlwifi 0000:00:14.3 wlp0s20f3: disabling HT as WMM/QoS is not supported by the AP
    [ 510.769541] iwlwifi 0000:00:14.3 wlp0s20f3: disabling VHT as WMM/QoS is not supported by the AP
    HT is high throughput and VHT is very high throughput; that is, high speeds are disabled.

    I suggest that you check in the configuration settings of the router and enable WMM (WiFi Multimedia) and/or QOS (Quality of Service). Reboot the router by power-cycling and enjoy better speeds.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

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