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Thread: Wifi adapter suddenly disappears

  1. #1
    Join Date
    Aug 2020
    Beans
    4

    Exclamation Wifi adapter suddenly disappears

    After couple of minutes / sometimes an hour or so, the Wifi suddenly disappears. I need to reboot to have the wifi available again. I'm not aware of any changes to the system, still it happens.

    Posting the content of wireless-info from the script from this forum. Any ideas?

    Code:
    
    ########## wireless info START ##########
    
    
    Report from: 31 Aug 2020 09:28 CEST +0200
    
    
    Booted last: 31 Aug 2020 00:00 CEST +0200
    
    
    Script from: 22 Oct 2018 03:34 UTC +0000
    
    
    ##### release ###########################
    
    
    Distributor ID:    Ubuntu
    Description:    Ubuntu 20.04.1 LTS
    Release:    20.04
    Codename:    focal
    
    
    ##### kernel ############################
    
    
    Linux 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
    
    
    Parameters: ro, quiet, splash, vt.handoff=7
    
    
    ##### desktop ###########################
    
    
    Ubuntu
    
    
    ##### lspci #############################
    
    
    00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (4) I219-LM [8086:15d7] (rev 21)
        Subsystem: Lenovo Ethernet Connection (4) I219-LM [17aa:506a]
        Kernel driver in use: e1000e
    
    
    ##### lsusb #############################
    
    
    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 004: ID 5986:2113 Acer, Inc Integrated Camera
    Bus 001 Device 005: ID 0bda:b023 Realtek Semiconductor Corp. Bluetooth Radio 
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    
    
    ##### PCMCIA card info ##################
    
    
    ##### rfkill ############################
    
    
    1: tpacpi_bluetooth_sw: Bluetooth
        Soft blocked: no
        Hard blocked: no
    2: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
    3: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
    
    
    ##### secure boot #######################
    
    
    SecureBoot disabled
    
    
    ##### lsmod #############################
    
    
    mac80211              843776  2 rtwpci,rtw88
    cfg80211              704512  2 mac80211,rtw88
    wmi_bmof               16384  0
    intel_wmi_thunderbolt    20480  0
    libarc4                16384  1 mac80211
    wmi                    32768  2 intel_wmi_thunderbolt,wmi_bmof
    
    
    ##### interfaces ########################
    
    
    ##### 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: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
        link/ether <MAC 'enp0s31f6' [IF1]> brd <MAC address>
        inet 192.168.0.200/24 brd 192.168.0.255 scope global dynamic noprefixroute enp0s31f6
           valid_lft 3580sec preferred_lft 3580sec
        inet6 fe80::a820:bdf9:daac:9461/64 scope link noprefixroute 
           valid_lft forever preferred_lft forever
    3: wlp6s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
        link/ether <MAC 'wlp6s0' [IF2]> brd <MAC address>
    4: vmnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000
        link/ether <MAC 'vmnet1' [IF3]> brd <MAC address>
        inet 172.16.1.1/24 brd 172.16.1.255 scope global vmnet1
           valid_lft forever preferred_lft forever
        inet6 fe80::<IP6 'vmnet1' [IF3]>/64 scope link 
           valid_lft forever preferred_lft forever
    5: vmnet8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000
        link/ether <MAC 'vmnet8' [IF4]> brd <MAC address>
        inet 192.168.88.1/24 brd 192.168.88.255 scope global vmnet8
           valid_lft forever preferred_lft forever
        inet6 fe80::<IP6 'vmnet8' [IF4]>/64 scope link 
           valid_lft forever preferred_lft forever
    
    
    ##### iwconfig ##########################
    
    
    vmnet8    no wireless extensions.
    
    
    lo        no wireless extensions.
    
    
    enp0s31f6  no wireless extensions.
    
    
    vmnet1    no wireless extensions.
    
    
    wlp6s0    IEEE 802.11  ESSID:off/any  
              Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
              Retry short limit:7   RTS thr:off   Fragment thr:off
              Power Management:on
              
    
    
    ##### route #############################
    
    
    default via 192.168.0.1 dev enp0s31f6 proto dhcp metric 100 
    169.254.0.0/16 dev enp0s31f6 scope link metric 1000 
    172.16.1.0/24 dev vmnet1 proto kernel scope link src 172.16.1.1 
    192.168.0.0/24 dev enp0s31f6 proto kernel scope link src 192.168.0.200 metric 100 
    192.168.88.0/24 dev vmnet8 proto kernel scope link src 192.168.88.1 
    
    
    ##### resolv.conf #######################
    
    
    [777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']
    
    
    nameserver 127.0.0.53
    options edns0
    search home
    
    
    ##### network managers ##################
    
    
    Installed:
    
    
        NetworkManager
    
    
    Running:
    
    
    root         906       1  0 08:36 ?        00:00:02 /usr/sbin/NetworkManager --no-daemon
    
    
    ##### NetworkManager info ###############
    
    
    GENERAL.DEVICE:                         enp0s31f6
    GENERAL.TYPE:                           ethernet
    GENERAL.NM-TYPE:                        NMDeviceEthernet
    GENERAL.DBUS-PATH:                      /org/freedesktop/NetworkManager/Devices/2
    GENERAL.VENDOR:                         Intel Corporation
    GENERAL.PRODUCT:                        Ethernet Connection (4) I219-LM
    GENERAL.DRIVER:                         e1000e
    GENERAL.DRIVER-VERSION:                 3.2.6-k
    GENERAL.FIRMWARE-VERSION:               0.1-4
    GENERAL.HWADDR:                         <MAC 'enp0s31f6' [IF1]>
    GENERAL.MTU:                            1500
    GENERAL.STATE:                          100 (connected)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.IP4-CONNECTIVITY:               4 (full)
    GENERAL.IP6-CONNECTIVITY:               3 (limited)
    GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1f.6/net/enp0s31f6
    GENERAL.IP-IFACE:                       enp0s31f6
    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:                     Kabelgebundene Verbindung 1
    GENERAL.CON-UUID:                       777c14e4-0662-31b6-9176-71e15d9b7c72
    GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/2
    GENERAL.METERED:                        no (guessed)
    CAPABILITIES.CARRIER-DETECT:            yes
    CAPABILITIES.SPEED:                     100 Mb/s
    CAPABILITIES.IS-SOFTWARE:               no
    CAPABILITIES.SRIOV:                     no
    INTERFACE-FLAGS.UP:                     yes
    INTERFACE-FLAGS.LOWER-UP:               yes
    INTERFACE-FLAGS.CARRIER:                yes
    WIRED-PROPERTIES.CARRIER:               on
    IP4.ADDRESS[1]:                         192.168.0.200/24
    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]:                             192.168.0.1
    IP4.DOMAIN[1]:                          home
    DHCP4.OPTION[1]:                        dhcp_lease_time = 3600
    DHCP4.OPTION[2]:                        domain_name = home
    DHCP4.OPTION[3]:                        domain_name_servers = 192.168.0.1
    DHCP4.OPTION[4]:                        expiry = 1598862478
    DHCP4.OPTION[5]:                        host_name = PC19084
    DHCP4.OPTION[6]:                        ip_address = 192.168.0.200
    DHCP4.OPTION[7]:                        next_server = 192.168.0.1
    DHCP4.OPTION[8]:                        requested_broadcast_address = 1
    DHCP4.OPTION[9]:                        requested_domain_name = 1
    DHCP4.OPTION[10]:                       requested_domain_name_servers = 1
    DHCP4.OPTION[11]:                       requested_domain_search = 1
    DHCP4.OPTION[12]:                       requested_host_name = 1
    DHCP4.OPTION[13]:                       requested_interface_mtu = 1
    DHCP4.OPTION[14]:                       requested_ms_classless_static_routes = 1
    DHCP4.OPTION[15]:                       requested_nis_domain = 1
    DHCP4.OPTION[16]:                       requested_nis_servers = 1
    DHCP4.OPTION[17]:                       requested_ntp_servers = 1
    DHCP4.OPTION[18]:                       requested_rfc3442_classless_static_routes = 1
    DHCP4.OPTION[19]:                       requested_root_path = 1
    DHCP4.OPTION[20]:                       requested_routers = 1
    DHCP4.OPTION[21]:                       requested_static_routes = 1
    DHCP4.OPTION[22]:                       requested_subnet_mask = 1
    DHCP4.OPTION[23]:                       requested_time_offset = 1
    DHCP4.OPTION[24]:                       requested_wpad = 1
    DHCP4.OPTION[25]:                       routers = 192.168.0.1
    DHCP4.OPTION[26]:                       subnet_mask = 255.255.255.0
    IP6.ADDRESS[1]:                         fe80::a820:bdf9:daac:9461/64
    IP6.GATEWAY:                            --
    IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 100
    IP6.ROUTE[2]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/4
    CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   777c14e4-0662-31b6-9176-71e15d9b7c72 | Kabelgebundene Verbindung 1
    
    
    GENERAL.DEVICE:                         wlp6s0
    GENERAL.TYPE:                           wifi
    GENERAL.NM-TYPE:                        NMDeviceWifi
    GENERAL.DBUS-PATH:                      /org/freedesktop/NetworkManager/Devices/3
    GENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.
    GENERAL.PRODUCT:                        RTL8822BE 802.11a/b/g/n/ac WiFi adapter (ThinkPad E595)
    GENERAL.DRIVER:                         rtw_pci
    GENERAL.DRIVER-VERSION:                 5.4.0-42-generic
    GENERAL.FIRMWARE-VERSION:               N/A
    GENERAL.HWADDR:                         <MAC 'wlp6s0' [IF2]>
    GENERAL.MTU:                            1500
    GENERAL.STATE:                          30 (disconnected)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.IP4-CONNECTIVITY:               1 (none)
    GENERAL.IP6-CONNECTIVITY:               1 (none)
    GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1d.2/0000:06:00.0/net/wlp6s0
    GENERAL.IP-IFACE:                       --
    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:                     --
    GENERAL.CON-UUID:                       --
    GENERAL.CON-PATH:                       --
    GENERAL.METERED:                        unknown
    CAPABILITIES.CARRIER-DETECT:            no
    CAPABILITIES.SPEED:                     unknown
    CAPABILITIES.IS-SOFTWARE:               no
    CAPABILITIES.SRIOV:                     no
    INTERFACE-FLAGS.UP:                     yes
    INTERFACE-FLAGS.LOWER-UP:               no
    INTERFACE-FLAGS.CARRIER:                no
    WIFI-PROPERTIES.WEP:                    yes
    WIFI-PROPERTIES.WPA:                    yes
    WIFI-PROPERTIES.WPA2:                   yes
    WIFI-PROPERTIES.TKIP:                   yes
    WIFI-PROPERTIES.CCMP:                   yes
    WIFI-PROPERTIES.AP:                     yes
    WIFI-PROPERTIES.ADHOC:                  yes
    WIFI-PROPERTIES.2GHZ:                   yes
    WIFI-PROPERTIES.5GHZ:                   yes
    WIFI-PROPERTIES.MESH:                   yes
    WIFI-PROPERTIES.IBSS-RSN:               no
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --
    
    
    GENERAL.DEVICE:                         vmnet1
    GENERAL.TYPE:                           ethernet
    GENERAL.NM-TYPE:                        NMDeviceEthernet
    GENERAL.DBUS-PATH:                      /org/freedesktop/NetworkManager/Devices/4
    GENERAL.VENDOR:                         --
    GENERAL.PRODUCT:                        --
    GENERAL.DRIVER:                         unknown
    GENERAL.DRIVER-VERSION:                 --
    GENERAL.FIRMWARE-VERSION:               --
    GENERAL.HWADDR:                         <MAC 'vmnet1' [IF3]>
    GENERAL.MTU:                            1500
    GENERAL.STATE:                          10 (unmanaged)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.IP4-CONNECTIVITY:               0 (unknown)
    GENERAL.IP6-CONNECTIVITY:               0 (unknown)
    GENERAL.UDI:                            /sys/devices/virtual/net/vmnet1
    GENERAL.IP-IFACE:                       vmnet1
    GENERAL.IS-SOFTWARE:                    no
    GENERAL.NM-MANAGED:                     no
    GENERAL.AUTOCONNECT:                    yes
    GENERAL.FIRMWARE-MISSING:               no
    GENERAL.NM-PLUGIN-MISSING:              no
    GENERAL.PHYS-PORT-ID:                   --
    GENERAL.CONNECTION:                     --
    GENERAL.CON-UUID:                       --
    GENERAL.CON-PATH:                       --
    GENERAL.METERED:                        unknown
    CAPABILITIES.CARRIER-DETECT:            no
    CAPABILITIES.SPEED:                     unknown
    CAPABILITIES.IS-SOFTWARE:               no
    CAPABILITIES.SRIOV:                     no
    INTERFACE-FLAGS.UP:                     yes
    INTERFACE-FLAGS.LOWER-UP:               yes
    INTERFACE-FLAGS.CARRIER:                yes
    WIRED-PROPERTIES.CARRIER:               on
    IP4.ADDRESS[1]:                         172.16.1.1/24
    IP4.GATEWAY:                            --
    IP4.ROUTE[1]:                           dst = 172.16.1.0/24, nh = 0.0.0.0, mt = 0
    IP6.ADDRESS[1]:                         fe80::<IP6 'vmnet1' [IF3]>/64
    IP6.GATEWAY:                            --
    IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
    IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --
    
    
    GENERAL.DEVICE:                         vmnet8
    GENERAL.TYPE:                           ethernet
    GENERAL.NM-TYPE:                        NMDeviceEthernet
    GENERAL.DBUS-PATH:                      /org/freedesktop/NetworkManager/Devices/5
    GENERAL.VENDOR:                         --
    GENERAL.PRODUCT:                        --
    GENERAL.DRIVER:                         unknown
    GENERAL.DRIVER-VERSION:                 --
    GENERAL.FIRMWARE-VERSION:               --
    GENERAL.HWADDR:                         <MAC 'vmnet8' [IF4]>
    GENERAL.MTU:                            1500
    GENERAL.STATE:                          10 (unmanaged)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.IP4-CONNECTIVITY:               0 (unknown)
    GENERAL.IP6-CONNECTIVITY:               0 (unknown)
    GENERAL.UDI:                            /sys/devices/virtual/net/vmnet8
    GENERAL.IP-IFACE:                       vmnet8
    GENERAL.IS-SOFTWARE:                    no
    GENERAL.NM-MANAGED:                     no
    GENERAL.AUTOCONNECT:                    yes
    GENERAL.FIRMWARE-MISSING:               no
    GENERAL.NM-PLUGIN-MISSING:              no
    GENERAL.PHYS-PORT-ID:                   --
    GENERAL.CONNECTION:                     --
    GENERAL.CON-UUID:                       --
    GENERAL.CON-PATH:                       --
    GENERAL.METERED:                        unknown
    CAPABILITIES.CARRIER-DETECT:            no
    CAPABILITIES.SPEED:                     unknown
    CAPABILITIES.IS-SOFTWARE:               no
    CAPABILITIES.SRIOV:                     no
    INTERFACE-FLAGS.UP:                     yes
    INTERFACE-FLAGS.LOWER-UP:               yes
    INTERFACE-FLAGS.CARRIER:                yes
    WIRED-PROPERTIES.CARRIER:               on
    IP4.ADDRESS[1]:                         192.168.88.1/24
    IP4.GATEWAY:                            --
    IP4.ROUTE[1]:                           dst = 192.168.88.0/24, nh = 0.0.0.0, mt = 0
    IP6.ADDRESS[1]:                         fe80::<IP6 'vmnet8' [IF4]>/64
    IP6.GATEWAY:                            --
    IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
    IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --
    
    
    SSID  BSSID  MODE  CHAN  FREQ  RATE  SIGNAL  BARS  SECURITY  ACTIVE  IN-USE 
    
    
    ##### NetworkManager.state ##############
    
    
    cat: /var/lib/NetworkManager/NetworkManager.state: Permission denied
    
    
    ##### 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:gsm,except:type:cdma
    
    
    [[/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
    
    
    ##### NetworkManager profiles ###########
    
    
    [[/etc/NetworkManager/system-connections/AndroidAPEAD8.nmconnection]] (600 root)
    [connection] id=AndroidAPEAD8 | type=wifi | permissions=
    [wifi] mac-address-blacklist= | ssid=AndroidAPEAD8
    [ipv4] method=auto
    [ipv6] method=auto
    
    
    [[/etc/NetworkManager/system-connections/UPC314CFBC_5GEXT.nmconnection]] (600 root)
    [connection] id=UPC314CFBC_5GEXT | type=wifi | permissions=
    [wifi] mac-address-blacklist= | ssid=UPC314CFBC_5GEXT
    [ipv4] method=auto
    [ipv6] method=auto
    
    
    [[/etc/NetworkManager/system-connections/UPC314CFBC_5GEXT 1.nmconnection]] (600 root)
    [connection] id=UPC314CFBC_5GEXT 1 | type=wifi | permissions=
    [wifi] mac-address-blacklist= | ssid=UPC314CFBC_5GEXT
    [ipv4] method=auto
    [ipv6] method=auto
    
    
    ##### Netplan config ####################
    
    
    [/etc/netplan/01-network-manager-all.yaml]
    network:
      version: 2
      renderer: NetworkManager
    
    
    ##### iw reg get ########################
    
    
    Region: Europe/Vienna (based on set time zone)
    
    
    global
    country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)
    
    
    ##### iwlist channels ###################
    
    
    vmnet8    no frequency information.
    
    
    lo        no frequency information.
    
    
    enp0s31f6  no frequency information.
    
    
    vmnet1    no frequency information.
    
    
    wlp6s0    32 channels in total; available frequencies :
              Channel 01 : 2.412 GHz
              Channel 02 : 2.417 GHz
              Channel 03 : 2.422 GHz
              Channel 04 : 2.427 GHz
              Channel 05 : 2.432 GHz
              Channel 06 : 2.437 GHz
              Channel 07 : 2.442 GHz
              Channel 08 : 2.447 GHz
              Channel 09 : 2.452 GHz
              Channel 10 : 2.457 GHz
              Channel 11 : 2.462 GHz
              Channel 12 : 2.467 GHz
              Channel 13 : 2.472 GHz
              Channel 14 : 2.484 GHz
              Channel 36 : 5.18 GHz
              Channel 40 : 5.2 GHz
              Channel 44 : 5.22 GHz
              Channel 48 : 5.24 GHz
              Channel 52 : 5.26 GHz
              Channel 56 : 5.28 GHz
              Channel 60 : 5.3 GHz
              Channel 64 : 5.32 GHz
              Channel 100 : 5.5 GHz
              Channel 104 : 5.52 GHz
              Channel 108 : 5.54 GHz
              Channel 112 : 5.56 GHz
              Channel 116 : 5.58 GHz
              Channel 120 : 5.6 GHz
              Channel 124 : 5.62 GHz
              Channel 128 : 5.64 GHz
              Channel 132 : 5.66 GHz
              Channel 136 : 5.68 GHz
    
    
    ##### iwlist scan #######################
    
    
    vmnet8    Interface doesn't support scanning.
    
    
    lo        Interface doesn't support scanning.
    
    
    enp0s31f6  Interface doesn't support scanning.
    
    
    vmnet1    Interface doesn't support scanning.
    
    
    wlp6s0    No scan results
    
    
    ##### module infos ######################
    
    
    [mac80211]
    filename:       /lib/modules/5.4.0-42-generic/kernel/net/mac80211/mac80211.ko
    license:        GPL
    description:    IEEE 802.11 subsystem
    srcversion:     085335B68C989451CD4CC8A
    depends:        cfg80211,libarc4
    retpoline:      Y
    intree:         Y
    name:           mac80211
    vermagic:       5.4.0-42-generic SMP mod_unload 
    sig_id:         PKCS#7
    signer:         Build time autogenerated kernel key
    sig_key:        02:B6:04:06:D9:82:F4:38:95:E4:6F:84:9F:1D:B4:8E:C5:85:90:8B
    sig_hashalgo:   sha512
    signature:      A1:89:14:B4:66:69:72:F4:70:9A:C4:D9:7D:DF:A8:0E:A5:20:C8:9E:
            A1:F6:23:B4:15:B6:A3:1B:EC:B1:57:80:10:C0:E3:0B:9F:5A:91:B9:
            56:55:6B:71:57:FE:0F:D1:90:E9:B4:D8:0E:14:1B:E4:16:D6:5E:94:
            A5:88:FC:4E:96:29:01:DB:01:16:88:96:66:95:22:25:74:21:D5:E0:
            D4:CF:19:5C:73:B1:E6:DF:96:8D:65:F7:05:00:77:0B:55:B4:DA:E0:
            FE:EC:69:F4:AB:1E:39:15:BD:F9:D7:50:94:74:C1:87:7A:64:D1:2E:
            F7:6C:15:96:F5:E5:E5:E6:01:F6:0B:77:E6:E1:51:AD:55:5B:FF:E5:
            2A:AD:A2:AD:EF:A1:74:C3:12:B6:16:20:83:B1:64:83:0B:0D:6D:B1:
            E1:A6:2C:A8:C4:FE:AC:97:F3:7E:DF:55:38:B1:A0:F2:7F:91:69:8C:
            F1:9B:DF:86:15:42:40:BE:76:21:2D:14:55:AB:6B:3E:1F:FA:C4:62:
            A1:6B:E7:50:CA:29:B7:31:B0:07:70:EB:A0:24:F5:6D:9D:FB:EE:10:
            1C:CD:53:56:5B:46:29:3F:F1:33:47:90:7E:0C:56:D7:77:A4:B3:AE:
            AD:2B:61:DB:34:01:B4:0D:03:6A:72:0A:7B:73:4F:B3:6A:B9:BF:35:
            8E:71:E5:C8:F6:D6:57:43:3C:B1:55:B3:05:22:22:CA:6C:8E:CC:19:
            FD:63:B4:11:74:43:41:7D:95:20:F2:E2:6C:BE:0C:1A:0A:81:DB:84:
            04:90:5B:12:50:BD:95:2B:DC:BD:C9:8B:D5:49:DC:2B:71:57:A5:CA:
            07:DB:08:4F:C9:F5:B2:51:70:18:C0:67:70:DF:7D:F2:5F:58:BB:D3:
            13:06:F2:0B:CC:B5:AA:6E:90:F8:A4:08:24:C9:14:93:46:B9:64:55:
            16:E4:24:EE:6B:1A:00:CC:EA:7C:2A:48:FE:6F:1A:5D:9A:F3:CC:C7:
            C4:66:0D:0E:E5:94:A4:E9:82:E4:AF:A7:FC:CA:6A:0D:78:AE:CD:49:
            EA:D4:4E:96:E6:A9:9C:8F:A1:08:EC:8A:A0:0D:44:D4:12:29:9D:81:
            2F:90:E4:16:69:93:7C:24:D7:8E:05:62:52:BD:AA:82:A0:B1:02:29:
            16:89:1A:98:D0:6E:96:D6:71:3C:C6:0A:D2:1A:1E:82:08:49:5C:87:
            C2:DD:B3:A8:1D:07:50:34:BA:2F:C4:B4:62:21:EA:E8:69:16:D5:DD:
            47:D3:45:3D:9B:D9:E0:8B:C9:B9:9C:3C:BC:B3:AC:1D:74:58:8B:BC:
            46:B8:8A:04:55:E5:B8:1F:2E:FA:B2:EB
    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)
    
    
    [cfg80211]
    filename:       /lib/modules/5.4.0-42-generic/kernel/net/wireless/cfg80211.ko
    description:    wireless configuration support
    license:        GPL
    author:         Johannes Berg
    srcversion:     2369BA84B34843FE73A01F4
    depends:        
    retpoline:      Y
    intree:         Y
    name:           cfg80211
    vermagic:       5.4.0-42-generic SMP mod_unload 
    sig_id:         PKCS#7
    signer:         Build time autogenerated kernel key
    sig_key:        02:B6:04:06:D9:82:F4:38:95:E4:6F:84:9F:1D:B4:8E:C5:85:90:8B
    sig_hashalgo:   sha512
    signature:      11:09:20:94:BE:F4:40:A6:FA:D0:3E:51:A8:D4:D2:61:63:79:98:EB:
            10:58:65:0E:8E:46:FF:83:C3:09:4D:0D:4E:43:FF:34:22:F3:75:27:
            0C:0C:C2:CC:1D:94:31:F0:20:B9:61:67:C9:7C:B4:64:FD:F6:76:2F:
            90:66:77:66:E4:CD:48:E9:0A:AA:2D:4C:AB:65:64:6C:0E:B8:FE:80:
            29:21:79:61:2D:DE:8B:C2:7F:A5:6D:DD:B8:22:E7:4C:5E:DB:36:17:
            98:BE:79:AC:F2:32:15:A4:1A:A5:F3:7D:53:27:44:66:05:C1:4D:9E:
            B4:42:CF:CF:B6:D3:5E:76:51:CD:FE:49:CB:88:40:18:05:12:03:3B:
            C7:00:6A:E2:C2:67:CF:BD:42:FF:1D:7A:22:73:6B:13:85:1C:40:E3:
            2E:66:00:D2:99:A3:DC:1F:21:AB:2F:E4:DB:02:74:83:5B:6D:B7:AE:
            D8:35:05:4D:8F:99:27:08:8D:7A:C8:F3:E8:70:7B:B2:C3:0F:59:B6:
            4F:8F:F4:FE:02:1C:10:A5:60:27:F0:B4:9D:49:00:47:55:BB:14:73:
            4F:25:B1:41:AC:F3:E7:C7:C9:0E:3A:2A:B1:8E:81:B9:8D:29:C9:4E:
            58:BA:82:AC:EB:D2:EA:30:BB:90:F0:72:A4:38:8A:D2:81:65:1B:FB:
            D3:D8:C9:F5:41:3F:5B:9F:AB:76:C0:F4:3D:44:C1:B4:1D:7B:75:0B:
            C6:70:E0:E9:83:D8:33:A7:FE:DB:A0:B1:97:B1:12:26:F7:22:CB:99:
            A8:77:A3:EA:3A:DF:A8:8C:82:64:9F:5B:CD:34:E2:1F:79:09:03:C8:
            3B:F5:A7:20:CA:B2:8C:EF:C6:50:1F:A2:1F:11:21:91:50:6E:6F:A9:
            89:00:5C:4D:84:9D:07:09:BC:A9:2E:B5:F0:1E:BB:75:D7:8E:9C:20:
            8A:6F:40:DD:7E:40:54:38:09:A3:8B:C2:3C:7B:0A:0F:7E:7E:F3:86:
            33:CE:FF:D7:54:5F:89:E4:FE:BB:0F:A2:46:65:20:CE:CC:88:5B:53:
            CF:C9:AD:14:9C:FD:0C:6C:F2:A6:2E:DF:B0:E5:7D:A5:28:B1:9F:ED:
            12:31:4C:BD:DD:15:F3:A3:13:61:5A:FD:51:3C:7B:3F:5B:9F:D5:C9:
            74:B4:2B:F3:6D:6B:96:48:06:29:63:50:1C:6A:3F:F8:C5:43:D4:B1:
            A6:D8:00:1D:D8:A1:BF:B4:66:05:36:3A:E5:9F:BC:8E:F9:A4:F1:31:
            E1:8D:1C:DF:F5:27:19:95:38:73:DE:FF:D1:81:D5:B7:37:D2:B1:81:
            F9:0C:71:F5:5C:30:FF:47:DB:F2:A6:7D
    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 #################
    
    
    [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
    
    
    [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 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/vmware-fuse.conf]
    alias char-major-10-229 fuse
    
    
    ##### rc.local ##########################
    
    
    grep: /etc/rc.local: No such file or directory
    
    
    ##### pm-utils ##########################
    
    
    ##### udev rules ########################
    
    
    ##### dmesg #############################
    
    
    [ 3097.988432] e1000e: enp0s31f6 NIC Link is Down
    [ 3102.122042] e1000e: enp0s31f6 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
    [ 3102.122046] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO
    [ 3149.311013] CPU: 2 PID: 8323 Comm: iwlist Tainted: G        W  OE     5.4.0-42-generic #46-Ubuntu
    
    
    ########## wireless info END ############

  2. #2
    Join Date
    Aug 2020
    Beans
    4

    Re: Wifi adapter suddenly disappears

    Nobody got any ideas? It is a really annoying problem. I found that the adapter is still there, but it is down. However it does not display any access points anymore and thus cannot connect to them. Not sure if this info is of any help:

    Code:
    $ dmesg | grep -e b43 -e wl
    [   15.840203] rtw_pci 0000:06:00.0 wlp6s0: renamed from wlan0
    [   22.194029] wlp6s0: authenticate with 2c:30:33:4c:f5:ea
    [   22.780528] wlp6s0: send auth to 2c:30:33:4c:f5:ea (try 1/3)
    [   22.781100] wlp6s0: authenticated
    [   22.784041] wlp6s0: associate with 2c:30:33:4c:f5:ea (try 1/3)
    [   22.785830] wlp6s0: RX AssocResp from 2c:30:33:4c:f5:ea (capab=0x911 status=0 aid=1)
    [   22.786582] wlp6s0: associated
    [   22.831242] wlp6s0: Limiting TX power to 20 (20 - 0) dBm as advertised by 2c:30:33:4c:f5:ea
    [   23.019507] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready
    [ 2302.104166] wlp6s0: deauthenticating from 2c:30:33:4c:f5:ea by local choice (Reason: 3=DEAUTH_LEAVING)
    [ 2309.249977] wlp6s0: authenticate with 2c:30:33:4c:f5:ea
    [ 2309.812426] wlp6s0: send auth to 2c:30:33:4c:f5:ea (try 1/3)
    [ 2309.812922] wlp6s0: authenticated
    [ 2309.816413] wlp6s0: associate with 2c:30:33:4c:f5:ea (try 1/3)
    [ 2309.817574] wlp6s0: RX AssocResp from 2c:30:33:4c:f5:ea (capab=0x911 status=0 aid=2)
    [ 2309.818289] wlp6s0: associated
    [ 2309.911392] wlp6s0: Limiting TX power to 20 (20 - 0) dBm as advertised by 2c:30:33:4c:f5:ea
    [ 2310.031307] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready

  3. #3
    Join Date
    Aug 2020
    Beans
    4

    Re: Wifi adapter suddenly disappears

    I'm not sure if it is relevant, but apparently the kernel always ouputs this lines when the wifi stops:

    Code:
    [  120.033618] rtw_pci 0000:06:00.0: failed to read ASPM, ret=-5
    [  122.336826] rtw_pci 0000:06:00.0: failed to poll offset=0x5 mask=0x2 value=0x0
    [  122.336838] rtw_pci 0000:06:00.0: mac power on failed
    [  122.336839] rtw_pci 0000:06:00.0: failed to power on mac
    [  122.336840] rtw_pci 0000:06:00.0: leave idle state failed
    [  122.336992] rtw_pci 0000:06:00.0: failed to leave ips state
    [  122.336994] rtw_pci 0000:06:00.0: failed to leave idle state

  4. #4
    Join Date
    Jun 2007
    Beans
    14,486

    Re: Wifi adapter suddenly disappears

    failed to read ASPM, ret=-5
    Based on that, I would try this:
    Code:
    echo "options rtw_pci disable_aspm=1" | sudo tee -a rtwfix.conf
    See if it works after rebooting. If it doesn't help, you can remove the created file:
    Code:
    sudo rm /etc/modprobe.d/rtwfix.conf

  5. #5
    Join Date
    Jun 2007
    Beans
    14,486

    Re: Wifi adapter suddenly disappears

    Hmm. My previous post may not be effective as disable_aspm option got added after 5.4 kernel.
    https://bugzilla.kernel.org/show_bug.cgi?id=206411

  6. #6
    Join Date
    Aug 2020
    Beans
    4

    Re: Wifi adapter suddenly disappears

    Power management indeed seems to be the problem. I followed the suggestion from another board and switched off the power management. Since then I did not experience the problem anymore.

    Code:
    sudo sed -i "s/wifi.powersave = 3/wifi.powersave = 2/g" /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

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