最近搭建了一个桌面并安装了 Linux Mint，但 WiFi 出现问题。主要问题是 WiFi 连接不断掉线。连接后，强度显示为约 70%，并且 WiFi 可用（我确实在使用某些流媒体网站（例如 vreddit.com 和 Streamable.com）时遇到问题，但其他网站（例如 youtube.com）都很好）。然而，在使用一些网络后，Linux Mint 仍然报告其已连接，但显示网络连接为 0%，并且不可用：
发生这种情况时，我尝试关闭/打开 WiFi，也尝试过sudo service network-manager restart。两者都可以暂时解决问题，但在问题再次发生后不久（有时大约是几秒分钟）。重新启动整个机器也是如此。
WiFi 在我拥有的所有其他设备上都运行良好，所以这绝对是这台机器的问题。我不是双启动。
可以找到我正在使用的无线适配器这里。
一些命令的输出，让我知道其他命令是否也有帮助：
$ sudo lshw -C network
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1s0
version: 16
serial: e0:d5:5e:e1:2f:71
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:16 ioport:4000(size=256) memory:a1204000-a1204fff memory:a1200000-a1203fff
*-network
description: Wireless interface
product: RTL8192EE PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 00
serial: 08:10:70:45:03:44
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8192ee driverversion=4.15.0-20-generic firmware=N/A ip=10.0.1.55 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:18 ioport:3000(size=256) memory:a1100000-a1103fff
$ iwconfig
lo no wireless extensions.
wlp2s0 IEEE 802.11 ESSID:"ALJOZIMA"
Mode:Managed Frequency:2.462 GHz Access Point: F0:99:BF:07:F0:50
Bit Rate=144.4 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:on
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:6 Missed beacon:0
enp1s0 no wireless extensions.
$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=bb4cdd90-9cfc-488c-8bbc-387343b7b434 ro quiet splash pci=nomsi,noaer,nommconf vt.handoff=1
$ sudo lspci -vnn | grep Network
<...snipped...>
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8192EE PCIe Wireless Network Adapter [10ec:818b]
Subsystem: Realtek Semiconductor Co., Ltd. RTL8192EE PCIe Wireless Network Adapter [10ec:818b]
Flags: bus master, fast devsel, latency 0, IRQ 18
I/O ports at 3000 [size=256]
Memory at a1100000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Kernel driver in use: rtl8192ee
Kernel modules: rtl8192ee
$ ifconfig
enp1s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether e0:d5:5e:e1:2f:71 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 5837 bytes 468305 (468.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5837 bytes 468305 (468.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp2s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 08:10:70:45:03:44 txqueuelen 1000 (Ethernet)
RX packets 167669 bytes 158516756 (158.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 136910 bytes 19684726 (19.6 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
$ lsmod | grep wifi
iwlwifi 278528 0
rtlwifi 77824 3 rtl8192ee,rtl_pci,btcoexist
mac80211 778240 3 rtl8192ee,rtl_pci,rtlwifi
cfg80211 622592 3 iwlwifi,mac80211,rtlwifi
$ dmesg | grep wifi
[ 2484.099772] Modules linked in: ccm nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 rtl8192ee btcoexist rtl_pci rtlwifi snd_hda_intel mac80211 snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi s
nd_seq_midi_event snd_rawmidi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_seq kvm joydev input_leds irqbypass snd_seq_device crct10dif_pclmul snd_timer crc32_pclmul ghash_clmulni_intel cfg80211 wmi_bmof pcbc sn
d aesni_intel soundcore aes_x86_64 crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf mei_me mei shpchp intel_pch_thermal acpi_pad mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 btrfs xor zstd_compres
s raid6_pq dm_mirror dm_region_hash dm_log hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper
[ 2495.513098] rtlwifi: AP off, try to reconnect now
[ 2505.593086] rtlwifi: AP off, try to reconnect now
<...repeats many times...>
$ uname -r
4.15.0-20-generic
$ grep Network /sys/log/varlog
<...snipped...>
Jul 4 16:49:27 splash dbus-daemon[834]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.133' (uid=0 pid=9318 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
Jul 4 16:49:27 splash systemd[1]: Starting Network Manager Script Dispatcher Service...
Jul 4 16:49:27 splash systemd[1]: Started Network Manager Script Dispatcher Service.
Jul 4 16:49:39 splash dbus-daemon[834]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.133' (uid=0 pid=9318 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
Jul 4 16:49:39 splash systemd[1]: Starting Network Manager Script Dispatcher Service...
Jul 4 16:49:39 splash systemd[1]: Started Network Manager Script Dispatcher Service.
Jul 4 16:49:41 splash NetworkManager[9318]: <warn> [1562284181.9757] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:49:41 splash NetworkManager[9318]: <info> [1562284181.9964] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:49:42 splash NetworkManager[9318]: <info> [1562284182.0810] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:49:49 splash NetworkManager[9318]: <info> [1562284189.8112] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:49:49 splash NetworkManager[9318]: <info> [1562284189.8784] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:49:49 splash NetworkManager[9318]: <info> [1562284189.8933] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:49:49 splash NetworkManager[9318]: <info> [1562284189.9401] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:50:13 splash NetworkManager[9318]: <warn> [1562284213.1309] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:50:13 splash NetworkManager[9318]: <info> [1562284213.1512] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:50:13 splash NetworkManager[9318]: <info> [1562284213.2369] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:50:20 splash NetworkManager[9318]: <info> [1562284220.9472] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:50:20 splash NetworkManager[9318]: <info> [1562284220.9668] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:50:20 splash NetworkManager[9318]: <info> [1562284220.9808] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:50:21 splash NetworkManager[9318]: <info> [1562284221.0284] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:50:32 splash NetworkManager[9318]: <warn> [1562284232.0878] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:50:32 splash NetworkManager[9318]: <info> [1562284232.1082] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:50:32 splash NetworkManager[9318]: <info> [1562284232.1930] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:50:39 splash NetworkManager[9318]: <info> [1562284239.9035] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:50:39 splash NetworkManager[9318]: <info> [1562284239.9527] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:50:39 splash NetworkManager[9318]: <info> [1562284239.9742] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:50:40 splash NetworkManager[9318]: <info> [1562284240.0800] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:51:21 splash NetworkManager[9318]: <warn> [1562284281.4466] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:51:21 splash NetworkManager[9318]: <info> [1562284281.4671] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:51:21 splash NetworkManager[9318]: <info> [1562284281.5526] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:51:29 splash NetworkManager[9318]: <info> [1562284289.2512] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:51:29 splash NetworkManager[9318]: <info> [1562284289.2683] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:51:29 splash NetworkManager[9318]: <info> [1562284289.2944] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:51:29 splash NetworkManager[9318]: <info> [1562284289.3012] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:51:42 splash NetworkManager[9318]: <warn> [1562284302.3835] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:51:42 splash NetworkManager[9318]: <info> [1562284302.4041] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:51:42 splash NetworkManager[9318]: <info> [1562284302.4888] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:51:50 splash NetworkManager[9318]: <info> [1562284310.1873] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:51:50 splash NetworkManager[9318]: <info> [1562284310.2067] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:51:50 splash NetworkManager[9318]: <info> [1562284310.2360] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:51:50 splash NetworkManager[9318]: <info> [1562284310.2483] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:52:09 splash NetworkManager[9318]: <warn> [1562284329.3987] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:52:09 splash NetworkManager[9318]: <info> [1562284329.4192] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:52:09 splash NetworkManager[9318]: <info> [1562284329.5042] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:52:17 splash NetworkManager[9318]: <info> [1562284337.2230] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:52:17 splash NetworkManager[9318]: <info> [1562284337.2430] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:52:17 splash NetworkManager[9318]: <info> [1562284337.2643] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:52:17 splash NetworkManager[9318]: <info> [1562284337.2901] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:52:50 splash NetworkManager[9318]: <warn> [1562284370.5106] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:52:50 splash NetworkManager[9318]: <info> [1562284370.5312] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:52:50 splash NetworkManager[9318]: <info> [1562284370.6165] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:52:58 splash NetworkManager[9318]: <info> [1562284378.3510] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:52:58 splash NetworkManager[9318]: <info> [1562284378.3939] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:52:58 splash NetworkManager[9318]: <info> [1562284378.4058] device (wlp2s0): supplicant interface state: associating -> associated
Jul 4 16:52:58 splash NetworkManager[9318]: <info> [1562284378.4116] device (wlp2s0): supplicant interface state: associated -> 4-way handshake
Jul 4 16:52:58 splash NetworkManager[9318]: <info> [1562284378.5033] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:53:07 splash NetworkManager[9318]: <warn> [1562284387.4234] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:53:07 splash NetworkManager[9318]: <info> [1562284387.4601] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:53:07 splash NetworkManager[9318]: <info> [1562284387.5287] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:53:15 splash NetworkManager[9318]: <info> [1562284395.2311] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:53:15 splash NetworkManager[9318]: <info> [1562284395.2530] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:53:15 splash NetworkManager[9318]: <info> [1562284395.2760] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:53:15 splash NetworkManager[9318]: <info> [1562284395.3141] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:53:48 splash NetworkManager[9318]: <warn> [1562284428.5187] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:53:48 splash NetworkManager[9318]: <info> [1562284428.5392] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:53:48 splash NetworkManager[9318]: <info> [1562284428.6245] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:53:56 splash NetworkManager[9318]: <info> [1562284436.3351] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:53:56 splash NetworkManager[9318]: <info> [1562284436.3569] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:53:56 splash NetworkManager[9318]: <info> [1562284436.3768] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:53:56 splash NetworkManager[9318]: <info> [1562284436.4176] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:54:29 splash NetworkManager[9318]: <warn> [1562284469.6347] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:54:29 splash NetworkManager[9318]: <info> [1562284469.6551] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:54:29 splash NetworkManager[9318]: <info> [1562284469.7407] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:54:37 splash NetworkManager[9318]: <info> [1562284477.4432] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:54:37 splash NetworkManager[9318]: <info> [1562284477.4805] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:54:37 splash NetworkManager[9318]: <info> [1562284477.4980] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:54:37 splash NetworkManager[9318]: <info> [1562284477.5242] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:54:56 splash NetworkManager[9318]: <warn> [1562284496.6026] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:54:56 splash NetworkManager[9318]: <info> [1562284496.6231] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:54:56 splash NetworkManager[9318]: <info> [1562284496.7084] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:55:04 splash NetworkManager[9318]: <info> [1562284504.4190] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:55:04 splash NetworkManager[9318]: <info> [1562284504.4538] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:55:04 splash NetworkManager[9318]: <info> [1562284504.4676] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:55:04 splash NetworkManager[9318]: <info> [1562284504.4827] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:55:21 splash NetworkManager[9318]: <warn> [1562284521.5706] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:55:21 splash NetworkManager[9318]: <info> [1562284521.5952] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:55:21 splash NetworkManager[9318]: <info> [1562284521.6766] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:55:29 splash NetworkManager[9318]: <info> [1562284529.3712] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:55:29 splash NetworkManager[9318]: <info> [1562284529.3990] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:55:29 splash NetworkManager[9318]: <info> [1562284529.4212] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:55:29 splash NetworkManager[9318]: <info> [1562284529.4625] device (wlp2s0): supplicant interface state: 4-way handshake -> completed
Jul 4 16:55:44 splash NetworkManager[9318]: <warn> [1562284544.5066] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -4)
Jul 4 16:55:44 splash NetworkManager[9318]: <info> [1562284544.5312] device (wlp2s0): supplicant interface state: completed -> disconnected
Jul 4 16:55:44 splash NetworkManager[9318]: <info> [1562284544.6126] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:55:52 splash NetworkManager[9318]: <info> [1562284552.3151] device (wlp2s0): supplicant interface state: scanning -> authenticating
Jul 4 16:55:52 splash NetworkManager[9318]: <info> [1562284552.3373] device (wlp2s0): supplicant interface state: authenticating -> associating
Jul 4 16:55:52 splash NetworkManager[9318]: <info> [1562284552.3575] device (wlp2s0): supplicant interface state: associating -> 4-way handshake
Jul 4 16:56:00 splash NetworkManager[9318]: <warn> [1562284560.0051] device (wlp2s0): link timed out.
Jul 4 16:56:00 splash NetworkManager[9318]: <info> [1562284560.0053] device (wlp2s0): state change: activated -> failed (reason 'supplicant-timeout', sys-iface-state: 'managed')
Jul 4 16:56:00 splash NetworkManager[9318]: <info> [1562284560.0056] manager: NetworkManager state is now CONNECTED_LOCAL
Jul 4 16:56:00 splash NetworkManager[9318]: <info> [1562284560.0061] manager: NetworkManager state is now DISCONNECTED
Jul 4 16:56:00 splash NetworkManager[9318]: <warn> [1562284560.0143] device (wlp2s0): Activation: failed for connection 'Auto ALJOZIMA'
Jul 4 16:56:00 splash dbus-daemon[834]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.133' (uid=0 pid=9318 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
Jul 4 16:56:00 splash NetworkManager[9318]: <info> [1562284560.0172] device (wlp2s0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Jul 4 16:56:00 splash systemd[1]: Starting Network Manager Script Dispatcher Service...
Jul 4 16:56:00 splash systemd[1]: Started Network Manager Script Dispatcher Service.
Jul 4 16:56:00 splash NetworkManager[9318]: <info> [1562284560.0831] dhcp4 (wlp2s0): canceled DHCP transaction, DHCP client pid 13666
Jul 4 16:56:00 splash NetworkManager[9318]: <info> [1562284560.0832] dhcp4 (wlp2s0): state changed bound -> done
Jul 4 16:56:00 splash NetworkManager[9318]: <warn> [1562284560.1025] sup-iface[0x560530fa9710,wlp2s0]: connection disconnected (reason -3)
Jul 4 16:56:00 splash NetworkManager[9318]: <info> [1562284560.1025] device (wlp2s0): supplicant interface state: 4-way handshake -> disconnected
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1522] policy: auto-activating connection 'Auto ALJOZIMA'
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1528] device (wlp2s0): Activation: starting connection 'Auto ALJOZIMA' (c78541d0-1545-4a7a-85fc-6d75b2aea57b)
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1531] device (wlp2s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1532] manager: NetworkManager state is now CONNECTING
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1534] device (wlp2s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1536] device (wlp2s0): Activation: (wifi) access point 'Auto ALJOZIMA' has security, but secrets are required.
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1536] device (wlp2s0): state change: config -> need-auth (reason 'none', sys-iface-state: 'managed')
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1554] device (wlp2s0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1556] device (wlp2s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1558] device (wlp2s0): Activation: (wifi) connection 'Auto ALJOZIMA' has security, and secrets exist. No new secrets needed.
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1558] Config: added 'ssid' value 'ALJOZIMA'
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1558] Config: added 'scan_ssid' value '1'
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1558] Config: added 'bgscan' value 'simple:30:-80:86400'
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1558] Config: added 'key_mgmt' value 'WPA-PSK'
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1558] Config: added 'psk' value '<hidden>'
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.1802] device (wlp2s0): supplicant interface state: disconnected -> authenticating
Jul 4 16:56:01 splash NetworkManager[9318]: <info> [1562284561.5326] device (wlp2s0): supplicant interface state: authenticating -> disconnected
Jul 4 16:56:02 splash NetworkManager[9318]: <info> [1562284562.0331] device (wlp2s0): supplicant interface state: disconnected -> scanning
Jul 4 16:56:26 splash NetworkManager[9318]: <warn> [1562284586.0029] device (wlp2s0): Activation: (wifi) association took too long, failing activation
Jul 4 16:56:26 splash NetworkManager[9318]: <info> [1562284586.0030] device (wlp2s0): state change: config -> failed (reason 'ssid-not-found', sys-iface-state: 'managed')
Jul 4 16:56:26 splash NetworkManager[9318]: <info> [1562284586.0034] manager: NetworkManager state is now DISCONNECTED
Jul 4 16:56:26 splash NetworkManager[9318]: <warn> [1562284586.0047] device (wlp2s0): Activation: failed for connection 'Auto ALJOZIMA'
Jul 4 16:56:26 splash NetworkManager[9318]: <info> [1562284586.0067] device (wlp2s0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Jul 4 16:56:27 splash NetworkManager[9318]: <info> [1562284587.1924] device (wlp2s0): supplicant interface state: scanning -> inactive
答案1
禁用 wifi 卡的电源管理： iwconfig wlp2s0 power off
增加更多功率： iwconfig wlp2s0 txpower 30mW
还有问题吗？我会尝试不同的内核（apt-cache search linux-image 和 apt-get install linux-image-VERSION）
稍后编辑：总是值得一试强制，速度较慢，但有人说更稳定，802.11g甚至802.11b：iwconfig wlp2s0 modu 11b（并非所有驱动程序都支持）或iwconfig wlp2s0速率11M
答案2
不要忘记检查你的路由器自己的设置，有些卡只支持某些类型..你的笔记本电脑卡使用的频道是ab/g/n吗20hz 40hz 80hz...也许你的wifi只使用2.4但你使用的是 5g...可能的原因有很多种..
另请检查您是否安装了您可能需要的所有 DKMS。例如 Broadcom ndis 包装器。 。 。
甚至可以从 kernel.org 中查看编译您自己的内核。我也使用 Mint，但我可能会重新使用 Debian，因为我主要是 Cinnamon 的粉丝，但最近又……Mint 团队……似乎在交付上失败了，甚至在资源可用性上也失败了与他们所谓的内核产品一起工作...正如我所注意到的，头脑中缺乏固件...期间...如果你下载了 Debian，实际上什么都没有遗漏..即使在 kernel.org 上，它们有一个huuuuuuuuuge的固件阵列可以加载到您的设备中并有您肆意的乐趣...目前我自己的Mint盒子是Kali / Parrot / Debian / Ubuntu / Gentoo / Centos / Slackware / Kali-ma!!!kali的弗兰肯斯坦！ -maaa!!!Kali Maaaaa把手伸进 iOS 设备，史蒂夫·乔布斯的 iHeart 就被撕掉了