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Thread: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

  1. #1
    Join Date
    Mar 2020
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    Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    What's crazy to me is that everything worked fine with the LiveCD, but now that it's installed it doesn't. I tested with both Ubuntu 19.04 and Ubuntu 18.04LTS. The network card is Intel(R) Wireless-AC 9560. I've tried installing sudo apt install backport-iwlwifi-dkms and it doesn't work either.
    Code:
    cat wireless-info.txt 
    
    ########## wireless info START ##########
    
    Report from: 02 Mar 2020 17:11 EST -0500
    
    Booted last: 02 Mar 2020 00:00 EST -0500
    
    Script from: 22 Oct 2018 03:34 UTC +0000
    
    ##### release ###########################
    
    Distributor ID:    Ubuntu
    Description:    Ubuntu 18.04.4 LTS
    Release:    18.04
    Codename:    bionic
    
    ##### kernel ############################
    
    Linux 5.3.0-40-generic #32~18.04.1-Ubuntu SMP Mon Feb 3 14:05:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
    
    Parameters: ro, quiet, splash, vt.handoff=1
    
    ##### desktop ###########################
    
    Ubuntu
    
    ##### lspci #############################
    
    00:14.3 Network controller [0280]: Intel Corporation Device [8086:02f0]
        Subsystem: Intel Corporation Device [8086:0034]
        Kernel driver in use: iwlwifi
    
    ##### lsusb #############################
    
    Bus 002 Device 005: ID 0bda:8153 Realtek Semiconductor Corp. 
    Bus 002 Device 004: ID 2109:0812 VIA Labs, Inc. VL812 Hub
    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 003: ID 13d3:56b2 IMC Networks 
    Bus 001 Device 002: ID 06cb:00be Synaptics, Inc. 
    Bus 001 Device 004: ID 8087:0aaa Intel Corp. 
    Bus 001 Device 006: ID 2109:2812 VIA Labs, Inc. VL812 Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    
    ##### PCMCIA card info ##################
    
    ##### rfkill ############################
    
    0: hci0: Bluetooth
        Soft blocked: yes
        Hard blocked: no
    1: ideapad_wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    2: ideapad_bluetooth: Bluetooth
        Soft blocked: yes
        Hard blocked: no
    
    ##### secure boot #######################
    
    SecureBoot disabled
    
    ##### lsmod #############################
    
    intel_wmi_thunderbolt    20480  0
    wmi_bmof               16384  0
    iwlmvm                397312  0
    mac80211              847872  1 iwlmvm
    libarc4                16384  1 mac80211
    ideapad_laptop         20480  0
    sparse_keymap          16384  1 ideapad_laptop
    iwlwifi               348160  1 iwlmvm
    cfg80211              704512  3 iwlmvm,iwlwifi,mac80211
    wmi                    32768  3 intel_wmi_thunderbolt,wmi_bmof,ideapad_laptop
    video                  49152  2 ideapad_laptop,i915
    
    ##### 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
    3: enx<IF from MAC [IF1]>: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
        link/ether <MAC 'enx<IF from MAC [IF1]>' [IF1]> brd <MAC address>
        inet 192.168.0.22/24 brd 192.168.0.255 scope global dynamic noprefixroute enx<IF from MAC [IF1]>
           valid_lft 3501sec preferred_lft 3501sec
        inet6 2601:140:8300:c9d0::12/128 scope global dynamic noprefixroute 
           valid_lft 3505sec preferred_lft 1705sec
        inet6 2601:140:8300:c9d0:aca3:88c:a474:4deb/64 scope global temporary dynamic 
           valid_lft 345597sec preferred_lft 86203sec
        inet6 2601:140:8300:c9d0:8a09:9254:805b:3088/64 scope global dynamic mngtmpaddr noprefixroute 
           valid_lft 345597sec preferred_lft 345597sec
        inet6 fe80::38ca:38b1:5a5:eb6a/64 scope link noprefixroute 
           valid_lft forever preferred_lft forever
    
    ##### iwconfig ##########################
    
    lo        no wireless extensions.
    
    enx<IF from MAC [IF1]>  no wireless extensions.
    
    ##### route #############################
    
    default via 192.168.0.1 dev enx<IF from MAC [IF1]> proto dhcp metric 100 
    169.254.0.0/16 dev enx<IF from MAC [IF1]> scope link metric 1000 
    192.168.0.0/24 dev enx<IF from MAC [IF1]> proto kernel scope link src 192.168.0.22 metric 100 
    
    ##### resolv.conf #######################
    
    [777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']
    
    nameserver 127.0.0.53
    options edns0
    search hsd1.va.comcast.net
    
    ##### network managers ##################
    
    Installed:
    
        NetworkManager
    
    Running:
    
    root       784     1  0 Mar01 ?        00:00:00 /usr/sbin/NetworkManager --no-daemon
    
    ##### NetworkManager info ###############
    
    GENERAL.DEVICE:                         enx<IF from MAC [IF1]>
    GENERAL.TYPE:                           ethernet
    GENERAL.NM-TYPE:                        NMDeviceEthernet
    GENERAL.VENDOR:                         Realtek
    GENERAL.PRODUCT:                        USB 10/100/1000 LAN
    GENERAL.DRIVER:                         r8152
    GENERAL.DRIVER-VERSION:                 v1.09.10
    GENERAL.FIRMWARE-VERSION:               --
    GENERAL.HWADDR:                         <MAC 'enx<IF from MAC [IF1]>' [IF1]>
    GENERAL.MTU:                            1500
    GENERAL.STATE:                          100 (connected)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4.3/2-4.3:1.0/net/enx<IF from MAC [IF1]>
    GENERAL.IP-IFACE:                       enx<IF from MAC [IF1]>
    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:                       992d69c4-3767-3067-a9df-2d95ae5a4e58
    GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/2
    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]:                         192.168.0.22/24
    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]:                             75.75.75.75
    IP4.DNS[2]:                             75.75.76.76
    IP4.DOMAIN[1]:                          hsd1.va.comcast.net
    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 = 75.75.75.75 75.75.76.76
    DHCP4.OPTION[5]:                        ip_address = 192.168.0.22
    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]:                       dhcp_rebinding_time = 3150
    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]:                       broadcast_address = 192.168.0.255
    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]:                       domain_name = hsd1.va.comcast.net.
    DHCP4.OPTION[21]:                       requested_routers = 1
    DHCP4.OPTION[22]:                       expiry = 1583190572
    DHCP4.OPTION[23]:                       requested_wpad = 1
    DHCP4.OPTION[24]:                       requested_netbios_scope = 1
    DHCP4.OPTION[25]:                       requested_ms_classless_static_routes = 1
    DHCP4.OPTION[26]:                       requested_netbios_name_servers = 1
    DHCP4.OPTION[27]:                       network_number = 192.168.0.0
    DHCP4.OPTION[28]:                       requested_domain_search = 1
    DHCP4.OPTION[29]:                       next_server = 192.168.0.1
    DHCP4.OPTION[30]:                       requested_ntp_servers = 1
    DHCP4.OPTION[31]:                       requested_host_name = 1
    DHCP4.OPTION[32]:                       dhcp_lease_time = 3600
    IP6.ADDRESS[1]:                         2601:140:8300:c9d0::12/128
    IP6.ADDRESS[2]:                         2601:140:8300:c9d0:aca3:88c:a474:4deb/64
    IP6.ADDRESS[3]:                         2601:140:8300:c9d0:8a09:9254:805b:3088/64
    IP6.ADDRESS[4]:                         fe80::38ca:38b1:5a5:eb6a/64
    IP6.GATEWAY:                            fe80::be2e:48ff:fe00:75c3
    IP6.ROUTE[1]:                           dst = 2601:140:8300:c9d0::/60, nh = fe80::be2e:48ff:fe00:75c3, mt = 100
    IP6.ROUTE[2]:                           dst = 2601:140:8300:c9d0::/64, nh = ::, mt = 100
    IP6.ROUTE[3]:                           dst = ::/0, nh = fe80::be2e:48ff:fe00:75c3, mt = 100
    IP6.ROUTE[4]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
    IP6.ROUTE[5]:                           dst = fe80::/64, nh = ::, mt = 256
    IP6.ROUTE[6]:                           dst = fe80::/64, nh = ::, mt = 100
    IP6.ROUTE[7]:                           dst = 2601:140:8300:c9d0::12/128, nh = ::, mt = 100
    IP6.DNS[1]:                             2001:558:feed::1
    IP6.DNS[2]:                             2001:558:feed::2
    DHCP6.OPTION[1]:                        dhcp6_client_id = 0:4:4e:4c:ba:c2:45:a6:e0:82:ae:da:b1:a7:f:92:c2:5b
    DHCP6.OPTION[2]:                        dhcp6_name_servers = 2001:558:feed::1 2001:558:feed::2
    DHCP6.OPTION[3]:                        requested_dhcp6_name_servers = 1
    DHCP6.OPTION[4]:                        rebind = 1350
    DHCP6.OPTION[5]:                        max_life = 3600
    DHCP6.OPTION[6]:                        preferred_life = 1800
    DHCP6.OPTION[7]:                        requested_dhcp6_domain_search = 1
    DHCP6.OPTION[8]:                        requested_dhcp6_client_id = 1
    DHCP6.OPTION[9]:                        life_starts = 1583186975
    DHCP6.OPTION[10]:                       ip6_address = 2601:140:8300:c9d0::12
    DHCP6.OPTION[11]:                       ip6_prefixlen = 64
    DHCP6.OPTION[12]:                       renew = 900
    DHCP6.OPTION[13]:                       dhcp6_server_id = 0:3:0:1:bc:2e:48:0:75:c3
    DHCP6.OPTION[14]:                       iaid = 1e:70:0c:e9
    DHCP6.OPTION[15]:                       starts = 1583186975
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{3}
    CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   992d69c4-3767-3067-a9df-2d95ae5a4e58 | Wired connection 1
    
    ##### NetworkManager.state ##############
    
    cat: /var/lib/NetworkManager/NetworkManager.state: No such file or directory
    
    ##### 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 ###########
    
    [[/etc/NetworkManager/system-connections/Tothnet]] (600 root)
    [connection] id=Tothnet | type=wifi | permissions=
    [wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=Tothnet
    [ipv4] method=auto
    [ipv6] method=auto
    
    ##### Netplan config ####################
    
    [/etc/netplan/01-network-manager-all.yaml]
    network:
      version: 2
      renderer: NetworkManager
    
    ##### iw reg get ########################
    
    Region: America/New_York (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.
    
    enx<IF from MAC [IF1]>  no frequency information.
    
    ##### iwlist scan #######################
    
    lo        Interface doesn't support scanning.
    
    enx<IF from MAC [IF1]>  Interface doesn't support scanning.
    
    ##### module infos ######################
    
    [iwlmvm]
    filename:       /lib/modules/5.3.0-40-generic/kernel/drivers/net/wireless/intel/iwlwifi/mvm/iwlmvm.ko
    license:        GPL
    author:         Copyright(c) 2003- 2015 Intel Corporation <linuxwifi@intel.com>
    description:    The new Intel(R) wireless AGN driver for Linux
    srcversion:     2C84FD44C3B5F1C7E065DBC
    depends:        iwlwifi,mac80211,cfg80211
    retpoline:      Y
    intree:         Y
    name:           iwlmvm
    vermagic:       5.3.0-40-generic SMP mod_unload 
    signat:         PKCS#7
    signer:         
    sig_key:        
    sig_hashalgo:   md4
    parm:           init_dbg:set to true to debug an ASSERT in INIT fw (default: false (bool)
    parm:           power_scheme:power management scheme: 1-active, 2-balanced, 3-low power, default: 2 (int)
    parm:           tfd_q_hang_detect:TFD queues hang detection (default: true (bool)
    
    [mac80211]
    filename:       /lib/modules/5.3.0-40-generic/kernel/net/mac80211/mac80211.ko
    license:        GPL
    description:    IEEE 802.11 subsystem
    srcversion:     B74C319077A9D20B0ECE3D6
    depends:        cfg80211,libarc4
    retpoline:      Y
    intree:         Y
    name:           mac80211
    vermagic:       5.3.0-40-generic SMP mod_unload 
    signat:         PKCS#7
    signer:         
    sig_key:        
    sig_hashalgo:   md4
    parm:           minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
    parm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
    parm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
    parm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
    parm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
    parm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
    
    [iwlwifi]
    filename:       /lib/modules/5.3.0-40-generic/kernel/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko
    license:        GPL
    author:         Copyright(c) 2003- 2015 Intel Corporation <linuxwifi@intel.com>
    description:    Intel(R) Wireless WiFi driver for Linux
    firmware:       iwlwifi-100-5.ucode
    firmware:       iwlwifi-1000-5.ucode
    firmware:       iwlwifi-135-6.ucode
    firmware:       iwlwifi-105-6.ucode
    firmware:       iwlwifi-2030-6.ucode
    firmware:       iwlwifi-2000-6.ucode
    firmware:       iwlwifi-5150-2.ucode
    firmware:       iwlwifi-5000-5.ucode
    firmware:       iwlwifi-6000g2b-6.ucode
    firmware:       iwlwifi-6000g2a-6.ucode
    firmware:       iwlwifi-6050-5.ucode
    firmware:       iwlwifi-6000-6.ucode
    firmware:       iwlwifi-7265D-29.ucode
    firmware:       iwlwifi-7265-17.ucode
    firmware:       iwlwifi-3168-29.ucode
    firmware:       iwlwifi-3160-17.ucode
    firmware:       iwlwifi-7260-17.ucode
    firmware:       iwlwifi-8265-36.ucode
    firmware:       iwlwifi-8000C-36.ucode
    firmware:       iwlwifi-9260-th-b0-jf-b0-46.ucode
    firmware:       iwlwifi-9000-pu-b0-jf-b0-46.ucode
    firmware:       iwlwifi-ty-a0-gf-a0-48.ucode
    firmware:       iwlwifi-so-a0-gf-a0-48.ucode
    firmware:       iwlwifi-so-a0-hr-b0-48.ucode
    firmware:       iwlwifi-so-a0-jf-b0-48.ucode
    firmware:       iwlwifi-cc-a0-48.ucode
    firmware:       iwlwifi-QuQnj-b0-jf-b0-48.ucode
    firmware:       iwlwifi-QuZ-a0-jf-b0-48.ucode
    firmware:       iwlwifi-QuZ-a0-hr-b0-48.ucode
    firmware:       iwlwifi-Qu-b0-jf-b0-48.ucode
    firmware:       iwlwifi-Qu-c0-hr-b0-48.ucode
    firmware:       iwlwifi-QuQnj-a0-hr-a0-48.ucode
    firmware:       iwlwifi-QuQnj-b0-hr-b0-48.ucode
    firmware:       iwlwifi-Qu-b0-hr-b0-48.ucode
    firmware:       iwlwifi-QuQnj-f0-hr-a0-48.ucode
    firmware:       iwlwifi-Qu-a0-jf-b0-48.ucode
    firmware:       iwlwifi-Qu-a0-hr-a0-48.ucode
    srcversion:     263DD85C748F2F7EFAE8CF0
    depends:        cfg80211
    retpoline:      Y
    intree:         Y
    name:           iwlwifi
    vermagic:       5.3.0-40-generic SMP mod_unload 
    signat:         PKCS#7
    signer:         
    sig_key:        
    sig_hashalgo:   md4
    parm:           swcrypto:using crypto in software (default 0 [hardware]) (int)
    parm:           11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
    parm:           amsdu_size:amsdu size 0: 12K for multi Rx queue devices, 2K for 22560 devices, 4K for other devices 1:4K 2:8K 3:12K 4: 2K (default 0) (int)
    parm:           fw_restart:restart firmware in case of error (default true) (bool)
    parm:           antenna_coupling:specify antenna coupling in dB (default: 0 dB) (int)
    parm:           nvm_file:NVM file name (charp)
    parm:           d0i3_disable:disable d0i3 functionality (default: Y) (bool)
    parm:           lar_disable:disable LAR functionality (default: N) (bool)
    parm:           uapsd_disable:disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3) (uint)
    parm:           enable_ini:Enable debug INI TLV FW debug infrastructure (default: 0 (bool)
    parm:           bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
    parm:           led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
    parm:           power_save:enable WiFi power management (default: disable) (bool)
    parm:           power_level:default power save level (range from 1 - 5, default: 1) (int)
    parm:           fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
    parm:           d0i3_timeout:Timeout to D0i3 entry when idle (ms) (uint)
    parm:           disable_11ac:Disable VHT capabilities (default: false) (bool)
    parm:           remove_when_gone:Remove dev from PCIe bus if it is deemed inaccessible (default: false) (bool)
    parm:           disable_11ax:Disable HE capabilities (default: false) (bool)
    
    [cfg80211]
    filename:       /lib/modules/5.3.0-40-generic/kernel/net/wireless/cfg80211.ko
    description:    wireless configuration support
    license:        GPL
    author:         Johannes Berg
    srcversion:     7A4BDDDDFBDE4DDDB63AAE3
    depends:        
    retpoline:      Y
    intree:         Y
    name:           cfg80211
    vermagic:       5.3.0-40-generic SMP mod_unload 
    signat:         PKCS#7
    signer:         
    sig_key:        
    sig_hashalgo:   md4
    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 #################
    
    [iwlmvm]
    init_dbg: N
    power_scheme: 2
    tfd_q_hang_detect: Y
    
    [mac80211]
    beacon_loss_count: 7
    ieee80211_default_rc_algo: minstrel_ht
    max_nullfunc_tries: 2
    max_probe_tries: 5
    minstrel_vht_only: Y
    probe_wait_ms: 500
    
    [iwlwifi]
    11n_disable: 0
    amsdu_size: 0
    antenna_coupling: 0
    bt_coex_active: Y
    d0i3_disable: Y
    d0i3_timeout: 1000
    disable_11ac: N
    disable_11ax: N
    enable_ini: N
    fw_monitor: N
    fw_restart: Y
    lar_disable: N
    led_mode: 0
    nvm_file: (null)
    power_level: 0
    power_save: N
    remove_when_gone: N
    swcrypto: 0
    uapsd_disable: 3
    
    [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
    
    [/etc/modprobe.d/libopenni-sensor-pointclouds0.conf]
    blacklist gspca_kinect
    
    ##### rc.local ##########################
    
    grep: /etc/rc.local: No such file or directory
    
    ##### pm-utils ##########################
    
    ##### udev rules ########################
    
    ##### dmesg #############################
    
    [   96.111858] r8152 2-4.3:1.0 eth0: v1.09.10
    [   96.116441] r8152 2-4.3:1.0 enx<IF from MAC [IF1]>: renamed from eth0
    [   99.020135] IPv6: ADDRCONF(NETDEV_CHANGE): enx<IF from MAC [IF1]>: link becomes ready
    [   99.021605] r8152 2-4.3:1.0 enx<IF from MAC [IF1]>: carrier on
    [85844.376587] r8152 2-4.3:1.0 eth0: v1.09.10
    [85844.393419] r8152 2-4.3:1.0 enx<IF from MAC [IF1]>: renamed from eth0
    [85847.314713] IPv6: ADDRCONF(NETDEV_CHANGE): enx<IF from MAC [IF1]>: link becomes ready
    [85847.315298] r8152 2-4.3:1.0 enx<IF from MAC [IF1]>: carrier on
    
    ########## wireless info END ############
    I'm currently running Ubuntu 18.04 and intend to continue because of support for ROS Melodic.
    Last edited by jeremy31; March 3rd, 2020 at 12:00 PM. Reason: code tags

  2. #2
    Join Date
    Mar 2020
    Beans
    7

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    Extra info that I would imagine is much more useful is the output of dmesg:

    Code:
    dmesg | grep iwlwifi
    [    5.160816] iwlwifi 0000:00:14.3: TLV_FW_FSEQ_VERSION: FSEQ Version: 43.2.23.17
    [    5.160822] iwlwifi 0000:00:14.3: Found debug destination: EXTERNAL_DRAM
    [    5.160825] iwlwifi 0000:00:14.3: Found debug configuration: 0
    [    5.161227] iwlwifi 0000:00:14.3: loaded firmware version 48.13675109.0 op_mode iwlmvm
    [    5.225396] iwlwifi 0000:00:14.3: Detected Intel(R) Wireless-AC 9560, REV=0x354
    [    5.233405] iwlwifi 0000:00:14.3: Applying debug destination EXTERNAL_DRAM
    [    5.235025] iwlwifi 0000:00:14.3: Allocated 0x00400000 bytes for firmware monitor.
    [    6.251270] iwlwifi 0000:00:14.3: Collecting data: trigger 15 fired.
    [    6.251354] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
    [    6.251358] iwlwifi 0000:00:14.3: Status: 0x00000000, count: -1236499254
    [    6.251360] iwlwifi 0000:00:14.3: Loaded firmware version: 48.13675109.0
    [    6.251363] iwlwifi 0000:00:14.3: 0x5FC03815 | ADVANCED_SYSASSERT          
    [    6.251365] iwlwifi 0000:00:14.3: 0x56003899 | trm_hw_status0
    [    6.251367] iwlwifi 0000:00:14.3: 0x01E423B8 | trm_hw_status1
    [    6.251369] iwlwifi 0000:00:14.3: 0xA6B756A9 | branchlink2
    [    6.251370] iwlwifi 0000:00:14.3: 0xE328D71C | interruptlink1
    [    6.251372] iwlwifi 0000:00:14.3: 0x30FAE5C9 | interruptlink2
    [    6.251374] iwlwifi 0000:00:14.3: 0x5C8EB565 | data1
    [    6.251375] iwlwifi 0000:00:14.3: 0x3D2FDD0B | data2
    [    6.251377] iwlwifi 0000:00:14.3: 0x4ECFDDAF | data3
    [    6.251379] iwlwifi 0000:00:14.3: 0xE0689EE8 | beacon time
    [    6.251380] iwlwifi 0000:00:14.3: 0x06191069 | tsf low
    [    6.251382] iwlwifi 0000:00:14.3: 0x7DBBFEDD | tsf hi
    [    6.251384] iwlwifi 0000:00:14.3: 0x1BEA870A | time gp1
    [    6.251385] iwlwifi 0000:00:14.3: 0x32EF9E49 | time gp2
    [    6.251387] iwlwifi 0000:00:14.3: 0xB4E8CFB0 | uCode revision type
    [    6.251389] iwlwifi 0000:00:14.3: 0xFC1576D9 | uCode version major
    [    6.251391] iwlwifi 0000:00:14.3: 0xB26D9E2B | uCode version minor
    [    6.251392] iwlwifi 0000:00:14.3: 0x70242BE0 | hw version
    [    6.251394] iwlwifi 0000:00:14.3: 0x406545E2 | board version
    [    6.251396] iwlwifi 0000:00:14.3: 0xFE4691FB | hcmd
    [    6.251397] iwlwifi 0000:00:14.3: 0x27E6FF4D | isr0
    [    6.251399] iwlwifi 0000:00:14.3: 0x4777F7D9 | isr1
    [    6.251401] iwlwifi 0000:00:14.3: 0xAB80A9A1 | isr2
    [    6.251402] iwlwifi 0000:00:14.3: 0xB89EE9B0 | isr3
    [    6.251404] iwlwifi 0000:00:14.3: 0xD7C7DFFA | isr4
    [    6.251406] iwlwifi 0000:00:14.3: 0xFD91FF76 | last cmd Id
    [    6.251407] iwlwifi 0000:00:14.3: 0x963C88E0 | wait_event
    [    6.251409] iwlwifi 0000:00:14.3: 0x96B0CCE2 | l2p_control
    [    6.251411] iwlwifi 0000:00:14.3: 0xEEFF6CB9 | l2p_duration
    [    6.251412] iwlwifi 0000:00:14.3: 0x5E8664CE | l2p_mhvalid
    [    6.251414] iwlwifi 0000:00:14.3: 0x12D1399E | l2p_addr_match
    [    6.251416] iwlwifi 0000:00:14.3: 0x7C02F17C | lmpm_pmg_sel
    [    6.251417] iwlwifi 0000:00:14.3: 0xDAA5E8C3 | timestamp
    [    6.251419] iwlwifi 0000:00:14.3: 0xF9074764 | flow_handler
    [    6.251454] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
    [    6.251456] iwlwifi 0000:00:14.3: Status: 0x00000000, count: 7
    [    6.251458] iwlwifi 0000:00:14.3: 0x201013F1 | ADVANCED_SYSASSERT
    [    6.251460] iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
    [    6.251462] iwlwifi 0000:00:14.3: 0xC008CF5C | umac branchlink2
    [    6.251464] iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink1
    [    6.251465] iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink2
    [    6.251467] iwlwifi 0000:00:14.3: 0x00000003 | umac data1
    [    6.251469] iwlwifi 0000:00:14.3: 0x20000302 | umac data2
    [    6.251470] iwlwifi 0000:00:14.3: 0x01300202 | umac data3
    [    6.251472] iwlwifi 0000:00:14.3: 0x00000030 | umac major
    [    6.251474] iwlwifi 0000:00:14.3: 0x13675109 | umac minor
    [    6.251475] iwlwifi 0000:00:14.3: 0x00005CD8 | frame pointer
    [    6.251477] iwlwifi 0000:00:14.3: 0xC0887F58 | stack pointer
    [    6.251479] iwlwifi 0000:00:14.3: 0x00000000 | last host cmd
    [    6.251481] iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
    [    6.251498] iwlwifi 0000:00:14.3: Fseq Registers:
    [    6.251501] iwlwifi 0000:00:14.3: 0x00000003 | FSEQ_ERROR_CODE
    [    6.251522] iwlwifi 0000:00:14.3: 0x00000000 | FSEQ_TOP_INIT_VERSION
    [    6.251525] iwlwifi 0000:00:14.3: 0x6FE72EAC | FSEQ_CNVIO_INIT_VERSION
    [    6.251546] iwlwifi 0000:00:14.3: 0x0000A384 | FSEQ_OTP_VERSION
    [    6.251549] iwlwifi 0000:00:14.3: 0x5DA66B83 | FSEQ_TOP_CONTENT_VERSION
    [    6.251569] iwlwifi 0000:00:14.3: 0xD26DA623 | FSEQ_ALIVE_TOKEN
    [    6.251573] iwlwifi 0000:00:14.3: 0x1A1E5C66 | FSEQ_CNVI_ID
    [    6.251593] iwlwifi 0000:00:14.3: 0x50A53FD0 | FSEQ_CNVR_ID
    [    6.251596] iwlwifi 0000:00:14.3: 0x20000302 | CNVI_AUX_MISC_CHIP
    [    6.251619] iwlwifi 0000:00:14.3: 0x01300202 | CNVR_AUX_MISC_CHIP
    [    6.251624] iwlwifi 0000:00:14.3: 0x0000485B | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
    [    6.251677] iwlwifi 0000:00:14.3: 0xA5A5A5A2 | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
    [    6.251712] iwlwifi 0000:00:14.3: SecBoot CPU1 Status: 0x5c4a, CPU2 Status: 0x3
    [    6.251714] iwlwifi 0000:00:14.3: Failed to start RT ucode: -110
    [    6.251718] iwlwifi 0000:00:14.3: Firmware not running - cannot dump error
    [    6.263333] iwlwifi 0000:00:14.3: Failed to run INIT ucode: -110
    Last edited by jeremy31; March 3rd, 2020 at 12:00 PM. Reason: code tags

  3. #3
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,131
    Distro
    Ubuntu 19.10 Eoan Ermine

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    We notice:
    Linux 5.3.0-40-generic
    Please check: https://askubuntu.com/questions/1192...038719_1193493

    Please see the last three comments.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  4. #4
    Join Date
    Mar 2020
    Beans
    7

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    thanks, Chili555
    I was skeptical, because the link you sent was for a different driver
    BUT IT WORKS.
    Step-by-step:
    1. At boot, the GRUB menu comes up
    2. Select "Advanced Options for Ubuntu"
    3. "Ubuntu, with Linux 5.3.0-28-generic"

    Will I have any issues if I update my machine? *As long as I continue to boot to kernel -28?

  5. #5
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,131
    Distro
    Ubuntu 19.10 Eoan Ermine

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    Will I have any issues if I update my machine? *As long as I continue to boot to kernel -28?
    Probably not. At some point, the bug will be fixed and as you find that an offered update is a newer kernel version (linux-image), say 5.3.0-43 or some such, try booting into it to see if the wireless now works. If so, you will be safe to start using it. When that is the case, please report back as quite a few also affected users will appreciate the good news.
    the link you sent was for a different driver
    I believe it is, in fact, the same: iwlwifi.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  6. #6
    Join Date
    Mar 2020
    Beans
    7

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    I was confused with the rtlwifi; before I posted I saw that and I thought they were dealing with Realtek drivers.
    Thanks, Chili555. I'll update with APT, not run dist-upgrade until 20.04 comes out, and I hope to remember to post back here once it starts working again.

  7. #7
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,131
    Distro
    Ubuntu 19.10 Eoan Ermine

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    5.3.0-42 is now out. Does the wireless work properly now?

    Thanks.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  8. #8
    Join Date
    Mar 2020
    Beans
    7

    SOLVED: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    5.3.0-42 does not fix the WiFi.

    ran
    sudo apt update
    sudo apt install linux-image-
    5.3.0-42
    sudo apt upgrade

    upgrade also installed linux-headers-
    5.3.0-42

    It updated GRUB2 appropriately. Ran it, no joy.
    No Wi-Fi adapter found

  9. #9
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    25,131
    Distro
    Ubuntu 19.10 Eoan Ermine

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    Will you please try this and report back? https://askubuntu.com/questions/1218...218262#1218262
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  10. #10
    Join Date
    Mar 2020
    Beans
    7

    Re: Yoga C740: WiFi works with LiveCD / LiveUSB, does not work installed

    Followed the steps up to & including
    Code:
    sudo rmmod iwlmvm
    sudo rmmod iwlwifi
    sudo cp /lib/firmware/iwlwifi-Qu-b0-jf-b0-48.ucode{,.bak}
    sudo cp /lib/firmware/iwlwifi-QuZ-a0-jf-b0-48.ucode /lib/firmware/iwlwifi-Qu-b0-jf-b0-48.ucode
    sudo modprobe iwlwifi
    Wifi is working successfully under kernel 5.3.0-45-generic

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