Ubuntu 18.04 不稳定的 wifi 连接 - “网络连接激活失败”

Vak*_*ang 5 network-manager wireless networking
我在我的 HP 笔记本电脑上安装了 Ubuntu 18.04。LAN 电缆工作正常，但 WIFI 连接很糟糕。它有时可能会起作用，但很快就会开始减弱 - 开始“连接”并最终显示“网络连接激活失败”。
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我知道这个问题是重复的，但注意到很多类似的问题要么在 askubuntu 门户中没有得到解答，要么对我的情况没有帮助。花了几个小时修复它但没有结果。也许，这个问题会提供更多相关细节来解决问题。
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我们将非常感谢您的帮助。
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这是我从 github 无线信息脚本检索到的无线信息（或者您可以在Pastebin上检查）：
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########## wireless info START ##########\n\nReport from: 12 May 2018 15:38 +04 +0400\n\nBooted last: 12 May 2018 00:00 +04 +0400\n\nScript from: 10 Jan 2018 20:04 UTC +0000\n\n##### release ###########################\n\nDistributor ID: Ubuntu\nDescription:    Ubuntu 18.04 LTS\nRelease:    18.04\nCodename:   bionic\n\n##### kernel ############################\n\nLinux 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux\n\nParameters: ro, quiet, splash, vt.handoff=1\n\n##### desktop ###########################\n\nUbuntu\n\n##### lspci #############################\n\n02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]\n    Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter [103c:81c1]\n    Kernel driver in use: rtl8723be\n\n03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)\n    Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:832d]\n    Kernel driver in use: r8169\n\n##### lsusb #############################\n\nBus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub\nBus 001 Device 004: ID 0bda:b008 Realtek Semiconductor Corp. \nBus 001 Device 003: ID 0bda:58ed Realtek Semiconductor Corp. \nBus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub\nBus 001 Device 006: ID 0458:0186 KYE Systems Corp. (Mouse Systems) \nBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub\n\n##### PCMCIA card info ##################\n\n##### rfkill ############################\n\n0: hci0: Bluetooth\n    Soft blocked: yes\n    Hard blocked: no\n1: phy0: Wireless LAN\n    Soft blocked: no\n    Hard blocked: no\n\n##### lsmod #############################\n\nrtl8723be              98304  0\nbtcoexist             131072  1 rtl8723be\nrtl8723_common         24576  1 rtl8723be\nrtl_pci                32768  1 rtl8723be\nrtlwifi                77824  4 rtl_pci,btcoexist,rtl8723_common,rtl8723be\nmac80211              778240  3 rtl_pci,rtlwifi,rtl8723be\ncfg80211              622592  2 mac80211,rtlwifi\nhp_wmi                 16384  0\nwmi_bmof               16384  0\nsparse_keymap          16384  1 hp_wmi\nwmi                    24576  2 wmi_bmof,hp_wmi\n\n##### interfaces ########################\n\n[/etc/network/interfaces]\nauto lo\niface lo inet loopback\n\n##### ifconfig ##########################\n\neno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500\n        inet 192.168.1.7  netmask 255.255.255.0  broadcast 192.168.1.255\n        inet6 fe80::c4df:c01d:67a9:e172  prefixlen 64  scopeid 0x20<link>\n        ether <MAC address>  txqueuelen 1000  (Ethernet)\n        RX packets 101603  bytes 120654085 (120.6 MB)\n        RX errors 0  dropped 0  overruns 0  frame 0\n        TX packets 72693  bytes 8859205 (8.8 MB)\n        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0\n\nlo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536\n        inet 127.0.0.1  netmask 255.0.0.0\n        inet6 ::1  prefixlen 128  scopeid 0x10<host>\n        loop  txqueuelen 1000  (Local Loopback)\n        RX packets 7789  bytes 682238 (682.2 KB)\n        RX errors 0  dropped 0  overruns 0  frame 0\n        TX packets 7789  bytes 682238 (682.2 KB)\n        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0\n\nwlo1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500\n        ether <MAC address>  txqueuelen 1000  (Ethernet)\n        RX packets 82418  bytes 100958947 (100.9 MB)\n        RX errors 0  dropped 0  overruns 0  frame 0\n        TX packets 50621  bytes 5415199 (5.4 MB)\n        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0\n\n##### iwconfig ##########################\n\neno1      no wireless extensions.\n\nlo        no wireless extensions.\n\nwlo1      IEEE 802.11  ESSID:off/any  \n          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   \n          Retry short limit:7   RTS thr=2347 B   Fragment thr:off\n          Power Management:on\n\n\n##### route #############################\n\nKernel IP routing table\nDestination     Gateway         Genmask         Flags Metric Ref    Use Iface\n0.0.0.0         192.168.1.1     0.0.0.0         UG    100    0        0 eno1\n169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eno1\n192.168.1.0     0.0.0.0         255.255.255.0   U     100    0        0 eno1\n\n##### resolv.conf #######################\n\nnameserver 127.0.0.53\n\n##### network managers ##################\n\nInstalled:\n\n    NetworkManager\n    Wicd\n\nRunning:\n\nroot      1016     1  0 14:29 ?        00:00:04 /usr/sbin/NetworkManager --no-daemon\n\n##### NetworkManager info ###############\n\nGENERAL.DEVICE:                         eno1\nGENERAL.TYPE:                           ethernet\nGENERAL.NM-TYPE:                        NMDeviceEthernet\nGENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.\nGENERAL.PRODUCT:                        RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller\nGENERAL.DRIVER:                         r8169\nGENERAL.DRIVER-VERSION:                 2.3LK-NAPI\nGENERAL.FIRMWARE-VERSION:               --\nGENERAL.HWADDR:                         <MAC address>\nGENERAL.MTU:                            1500\nGENERAL.STATE:                          100 (connected)\nGENERAL.REASON:                         0 (No reason given)\nGENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.3/0000:03:00.0/net/eno1\nGENERAL.IP-IFACE:                       eno1\nGENERAL.IS-SOFTWARE:                    no\nGENERAL.NM-MANAGED:                     yes\nGENERAL.AUTOCONNECT:                    yes\nGENERAL.FIRMWARE-MISSING:               no\nGENERAL.NM-PLUGIN-MISSING:              no\nGENERAL.PHYS-PORT-ID:                   --\nGENERAL.CONNECTION:                     Wired connection 1\nGENERAL.CON-UUID:                       444d0395-a533-3a4a-9c78-6833a0f09397\nGENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/16\nGENERAL.METERED:                        no (guessed)\nCAPABILITIES.CARRIER-DETECT:            yes\nCAPABILITIES.SPEED:                     100 Mb/s\nCAPABILITIES.IS-SOFTWARE:               no\nCAPABILITIES.SRIOV:                     no\nWIRED-PROPERTIES.CARRIER:               on\nIP4.ADDRESS[1]:                         192.168.1.7/24\nIP4.GATEWAY:                            192.168.1.1\nIP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 192.168.1.1, mt = 100\nIP4.ROUTE[2]:                           dst = 192.168.1.0/24, nh = 0.0.0.0, mt = 100\nIP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000\nIP4.DNS[1]:                             77.74.44.44\nIP4.DNS[2]:                             212.58.96.96\nIP4.DNS[3]:                             8.8.8.8\nIP4.DNS[4]:                             192.168.1.1\nDHCP4.OPTION[1]:                        requested_host_name = 1\nDHCP4.OPTION[2]:                        requested_domain_search = 1\nDHCP4.OPTION[3]:                        requested_time_offset = 1\nDHCP4.OPTION[4]:                        requested_broadcast_address = 1\nDHCP4.OPTION[5]:                        requested_rfc3442_classless_static_routes = 1\nDHCP4.OPTION[6]:                        requested_domain_name = 1\nDHCP4.OPTION[7]:                        requested_wpad = 1\nDHCP4.OPTION[8]:                        requested_netbios_scope = 1\nDHCP4.OPTION[9]:                        next_server = 0.0.0.0\nDHCP4.OPTION[10]:                       broadcast_address = 192.168.1.255\nDHCP4.OPTION[11]:                       dhcp_message_type = 5\nDHCP4.OPTION[12]:                       requested_interface_mtu = 1\nDHCP4.OPTION[13]:                       routers = 192.168.1.1\nDHCP4.OPTION[14]:                       dhcp_lease_time = 7200\nDHCP4.OPTION[15]:                       ip_address = 192.168.1.7\nDHCP4.OPTION[16]:                       requested_domain_name_servers = 1\nDHCP4.OPTION[17]:                       subnet_mask = 255.255.255.0\nDHCP4.OPTION[18]:                       requested_subnet_mask = 1\nDHCP4.OPTION[19]:                       requested_static_routes = 1\nDHCP4.OPTION[20]:                       expiry = 1526131586\nDHCP4.OPTION[21]:                       domain_name_servers = 77.74.44.44 212.58.96.96 8.8.8.8 192.168.1.1\nDHCP4.OPTION[22]:                       requested_ntp_servers = 1\nDHCP4.OPTION[23]:                       requested_netbios_name_servers = 1\nDHCP4.OPTION[24]:                       requested_routers = 1\nDHCP4.OPTION[25]:                       requested_ms_classless_static_routes = 1\nDHCP4.OPTION[26]:                       network_number = 192.168.1.0\nDHCP4.OPTION[27]:                       dhcp_server_identifier = 192.168.1.1\nIP6.ADDRESS[1]:                         fe80::c4df:c01d:67a9:e172/64\nIP6.GATEWAY:                            --\nIP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255\nIP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256\nIP6.ROUTE[3]:                           dst = fe80::/64, nh = ::, mt = 100\nCONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{2}\nCONNECTIONS.AVAILABLE-CONNECTIONS[1]:   444d0395-a533-3a4a-9c78-6833a0f09397 | Wired connection 1\n\nGENERAL.DEVICE:                         wlo1\nGENERAL.TYPE:                           wifi\nGENERAL.NM-TYPE:                        NMDeviceWifi\nGENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.\nGENERAL.PRODUCT:                        RTL8723BE PCIe Wireless Network Adapter\nGENERAL.DRIVER:                         rtl8723be\nGENERAL.DRIVER-VERSION:                 4.15.0-20-generic\nGENERAL.FIRMWARE-VERSION:               N/A\nGENERAL.HWADDR:                         <MAC address>\nGENERAL.MTU:                            1500\nGENERAL.STATE:                          30 (disconnected)\nGENERAL.REASON:                         0 (No reason given)\nGENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.2/0000:02:00.0/net/wlo1\nGENERAL.IP-IFACE:                       --\nGENERAL.IS-SOFTWARE:                    no\nGENERAL.NM-MANAGED:                     yes\nGENERAL.AUTOCONNECT:                    yes\nGENERAL.FIRMWARE-MISSING:               no\nGENERAL.NM-PLUGIN-MISSING:              no\nGENERAL.PHYS-PORT-ID:                   --\nGENERAL.CONNECTION:                     --\nGENERAL.CON-UUID:                       --\nGENERAL.CON-PATH:                       --\nGENERAL.METERED:                        unknown\nCAPABILITIES.CARRIER-DETECT:            no\nCAPABILITIES.SPEED:                     unknown\nCAPABILITIES.IS-SOFTWARE:               no\nCAPABILITIES.SRIOV:                     no\nWIFI-PROPERTIES.WEP:                    yes\nWIFI-PROPERTIES.WPA:                    yes\nWIFI-PROPERTIES.WPA2:                   yes\nWIFI-PROPERTIES.TKIP:                   yes\nWIFI-PROPERTIES.CCMP:                   yes\nWIFI-PROPERTIES.AP:                     yes\nWIFI-PROPERTIES.ADHOC:                  yes\nWIFI-PROPERTIES.2GHZ:                   yes\nWIFI-PROPERTIES.5GHZ:                   no\nCONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{3}\nCONNECTIONS.AVAILABLE-CONNECTIONS[1]:   76aa10c5-326c-4ce3-bd75-f34fd2002acb | VKN\n\nSSID  BSSID              MODE   CHAN  FREQ      RATE        SIGNAL  BARS  SECURITY   ACTIVE  IN-USE \nVKN   <MAC \'VKN\' [AC1]>  Infra  1     2412 MHz  135 Mbit/s  90      \xe2\x96\x82\xe2\x96\x84\xe2\x96\x86\xe2\x96\x88  WPA1 WPA2  no             \n\n##### NetworkManager.state ##############\n\n[main]\nNetworkingEnabled=true\nWirelessEnabled=true\nWWANEnabled=true\n\n##### NetworkManager.conf ###############\n\n[main]\nplugins=ifupdown,keyfile\n\n[ifupdown]\nmanaged=false\n\n[device]\nwifi.scan-rand-mac-address=no\n\n##### NetworkManager profiles ###########\n\n[[/etc/NetworkManager/system-connections/VKN]] (600 root)\n[connection] id=VKN | type=wifi | permissions=\n[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=VKN\n[ipv4] method=auto\n[ipv6] method=auto\n\n##### Netplan config ####################\n\n[/etc/netplan/01-network-manager-all.yaml]\nnetwork:\n  version: 2\n  renderer: NetworkManager\n\n##### iw reg get ########################\n\nRegion: Asia/Tbilisi (based on set time zone)\n\nglobal\ncountry 00: DFS-UNSET\n    (2402 - 2472 @ 40), (N/A, 20), (N/A)\n    (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, NO-IR\n    (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR\n    (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, NO-IR\n    (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, NO-IR\n    (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR\n    (5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR\n    (57240 - 63720 @ 2160), (N/A, 0), (N/A)\n\n##### iwlist channels ###################\n\neno1      no frequency information.\n\nlo        no frequency information.\n\nwlo1      13 channels in total; available frequencies :\n          Channel 01 : 2.412 GHz\n          Channel 02 : 2.417 GHz\n          Channel 03 : 2.422 GHz\n          Channel 04 : 2.427 GHz\n          Channel 05 : 2.432 GHz\n          Channel 06 : 2.437 GHz\n          Channel 07 : 2.442 GHz\n          Channel 08 : 2.447 GHz\n          Channel 09 : 2.452 GHz\n          Channel 10 : 2.457 GHz\n          Channel 11 : 2.462 GHz\n          Channel 12 : 2.467 GHz\n          Channel 13 : 2.472 GHz\n\n##### iwlist scan #######################\n\neno1      Interface doesn\'t support scanning.\n\nlo        Interface doesn\'t support scanning.\n\nChannel occupancy:\n\n      1   APs on   Frequency:2.412 GHz (Channel 1)\n\nwlo1      Scan completed :\n          Cell 01 - Address: <MAC \'VKN\' [AC1]>\n                    Channel:1\n                    Frequency:2.412 GHz (Channel 1)\n                    Quality=64/70  Signal level=-46 dBm  \n                    Encryption key:on\n                    ESSID:"VKN"\n                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s\n                              9 Mb/s; 12 Mb/s; 18 Mb/s\n                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s\n                    Mode:Master\n                    Extra:tsf=00000050ee8ec472\n                    Extra: Last beacon: 300ms ago\n                    IE: WPA Version 1\n                        Group Cipher : TKIP\n                        Pairwise Ciphers (2) : TKIP CCMP\n                        Authentication Suites (1) : PSK\n                    IE: IEEE 802.11i/WPA2 Version 1\n                        Group Cipher : TKIP\n                        Pairwise Ciphers (2) : TKIP CCMP\n                        Authentication Suites (1) : PSK\n\n##### module infos ######################\n\n[rtl8723be]\nfilename:       /lib/modules/4.15.0-20-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/rtl8723be.ko\nfirmware:       rtlwifi/rtl8723befw_36.bin\nfirmware:       rtlwifi/rtl8723befw.bin\ndescription:    Realtek 8723BE 802.11n PCI wireless\nlicense:        GPL\nauthor:         Realtek WlanFAE <wlanfae@realtek.com>\nauthor:         PageHe  <page_he@realsil.com.cn>\nsrcversion:     6A56582B1FEECB841E329C4\ndepends:        rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211\nretpoline:      Y\nintree:         Y\nname:           rtl8723be\nvermagic:       4.15.0-20-generic SMP mod_unload \nsignat:         PKCS#7\nsigner:         \nsig_key:        \nsig_hashalgo:   md4\nparm:           swenc:Set to 1 for software crypto (default 0)\n (bool)\nparm:           ips:Set to 0 to not use link power save (default 1)\n (bool)\nparm:           swlps:Set to 1 to use SW control power save (default 0)\n (bool)\nparm:           fwlps:Set to 1 to use FW control power save (default 1)\n (bool)\nparm:           msi:Set to 1 to use MSI interrupts mode (default 0)\n (bool)\nparm:           aspm:Set to 1 to enable ASPM (default 1)\n (int)\nparm:           debug_level:Set debug level (0-5) (default 0) (int)\nparm:           debug_mask:Set debug mask (default 0) (ullong)\nparm:           disable_watchdog:Set to 1 to disable the watchdog (default 0)\n (bool)\nparm:           ant_sel:Set to 1 or 2 to force antenna number (default 0)\n (int)\n\n[rtl8723_common]\nfilename:       /lib/modules/4.15.0-20-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723com/rtl8723-common.ko\ndescription:    Realtek RTL8723AE/RTL8723BE 802.11n PCI wireless common routines\nlicense:        GPL\nauthor:         Larry Finger    <Larry.Finger@lwfinger.net>\nauthor:         Realtek WlanFAE <wlanfae@realtek.com>\nsrcversion:     90DB9C652E26F4135F339B8\ndepends:        rtlwifi\nretpoline:      Y\nintree:         Y\nname:           rtl8723_common\nvermagic:       4.15.0-20-generic SMP mod_unload \nsignat:         PKCS#7\nsigner:         \nsig_key:        \nsig_hashalgo:   md4\n\n[rtl_pci]\nfilename:       /lib/modules/4.15.0-20-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl_pci.ko\ndescription:    PCI basic driver for rtlwifi\nlicense:        GPL\nauthor:         Larry Finger    <Larry.FInger@lwfinger.net>\nauthor:         Realtek WlanFAE <wlanfae@realtek.com>\nauthor:         lizhaoming  <chaoming_li@realsil.com.cn>\nsrcversion:     9F5FA8A771710F4CA500C6E\ndepends:        mac80211,rtlwifi\nretpoline:      Y\nintree:         Y\nname:           rtl_pci\nvermagic:       4.15.0-20-generic SMP mod_unload \nsignat:         PKCS#7\nsigner:         \nsig_key:        \nsig_hashalgo:   md4\n\n[rtlwifi]\nfilename:       /lib/modules/4.15.0-20-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtlwifi.ko\ndescription:    Realtek 802.11n PCI wireless core\nlicense:        GPL\nauthor:         Larry Finger    <Larry.FInger@lwfinger.net>\nauthor:         Realtek WlanFAE <wlanfae@realtek.com>\nauthor:         lizhaoming  <chaoming_li@realsil.com.cn>\nsrcversion:     8AB8B2AAF3BCFFB93D91956\ndepends:        mac80211,cfg80211\nretpoline:      Y\nintree:         Y\nname:           rtlwifi\nvermagic:       4.15.0-20-generic SMP mod_unload \nsignat:         PKCS#7\nsigner:         \nsig_key:        \nsig_hashalgo:   md4\n\n[mac80211]\nfilename:       /lib/modules/4.15.0-20-generic/kernel/net/mac80211/mac80211.ko\nlicense:        GPL\ndescription:    IEEE 802.11 subsystem\nsrcversion:     1CEA5CF286EDB289C1D0BF8\ndepends:        cfg80211\nretpoline:      Y\nintree:         Y\nname:           mac80211\nvermagic:       4.15.0-20-generic SMP mod_unload \nsignat:         PKCS#7\nsigner:         \nsig_key:        \nsig_hashalgo:   md4\nparm:           minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)\nparm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)\nparm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)\nparm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)\nparm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)\nparm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)\n\n[cfg80211]\nfilename:       /lib/modules/4.15.0-20-generic/kernel/net/wireless/cfg80211.ko\ndescription:    wireless configuration support\nlicense:        GPL\nauthor:         Johannes Berg\nsrcversion:     D5B0789D4C423C81CCFB437\ndepends:        \nretpoline:      Y\nintree
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