我已经在手机（小米 Redmi 6A）上打开了接入点，我确认我可以在非 Linux 设备上连接。但我的 ubuntu（20.04）笔记本电脑找不到我的网络。之后，我尝试找到我的网络，airodump-ng并在 9 分钟内找到它在 13 个频道上，大约有 19 个信标。以下是一些有用的信息：
# lshw output
*-network
description: Wireless interface
product: BCM43225 802.11b/g/n
vendor: Broadcom Inc. and subsidiaries
physical id: 0
bus info: pci@0000:08:00.0
logical name: wlp8s0
version: 01
serial: 78:e4:00:f1:b6:b4
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11
resources: irq:17 memory:f1000000-f1003fff
#lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] RS880 Host Bridge
00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] RS780 PCI to PCI bridge (ext gfx port 0)
00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 0)
00:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 1)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode]
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller (rev 41)
00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 IDE Controller (rev 40)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) (rev 40)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor Link Control
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Park [Mobility Radeon HD 5430/5450/5470]
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar HDMI Audio [Radeon HD 5400/6300/7300 Series]
02:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetLink BCM57780 Gigabit Ethernet PCIe (rev 01)
08:00.0 Network controller: Broadcom Inc. and subsidiaries BCM43225 802.11b/g/n (rev 01)
# iw phy
Wiphy phy0
max # scan SSIDs: 1
max scan IEs length: 0 bytes
max # sched scan SSIDs: 0
max # match sets: 0
max # scan plans: 1
max scan plan interval: -1
max scan plan iterations: 0
Retry short limit: 7
Retry long limit: 4
Coverage class: 0 (up to 0m)
Supported Ciphers:
* WEP40 (00-0f-ac:1)
* WEP104 (00-0f-ac:5)
* TKIP (00-0f-ac:2)
* CCMP-128 (00-0f-ac:4)
* CMAC (00-0f-ac:6)
Available Antennas: TX 0 RX 0
Supported interface modes:
* IBSS
* managed
Band 1:
Bitrates (non-HT):
* 1.0 Mbps
* 2.0 Mbps (short preamble supported)
* 5.5 Mbps (short preamble supported)
* 11.0 Mbps (short preamble supported)
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm)
* 2472 MHz [13] (20.0 dBm)
* 2484 MHz [14] (disabled)
Band 2:
Bitrates (non-HT):
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Frequencies:
* 5160 MHz [32] (30.0 dBm)
* 5170 MHz [34] (30.0 dBm)
* 5180 MHz [36] (30.0 dBm)
* 5190 MHz [38] (30.0 dBm)
* 5200 MHz [40] (30.0 dBm)
* 5210 MHz [42] (30.0 dBm)
* 5220 MHz [44] (30.0 dBm)
* 5230 MHz [46] (30.0 dBm)
* 5240 MHz [48] (30.0 dBm)
* 5250 MHz [50] (30.0 dBm)
* 5260 MHz [52] (30.0 dBm)
* 5270 MHz [54] (30.0 dBm)
* 5280 MHz [56] (30.0 dBm)
* 5290 MHz [58] (30.0 dBm)
* 5300 MHz [60] (30.0 dBm)
* 5310 MHz [62] (30.0 dBm)
* 5320 MHz [64] (30.0 dBm)
* 5330 MHz [66] (30.0 dBm)
* 5340 MHz [68] (30.0 dBm)
* 5350 MHz [70] (30.0 dBm)
* 5360 MHz [72] (30.0 dBm)
* 5370 MHz [74] (30.0 dBm)
* 5380 MHz [76] (30.0 dBm)
* 5390 MHz [78] (30.0 dBm)
* 5400 MHz [80] (30.0 dBm)
* 5410 MHz [82] (30.0 dBm)
* 5420 MHz [84] (30.0 dBm)
* 5430 MHz [86] (30.0 dBm)
* 5440 MHz [88] (30.0 dBm)
* 5450 MHz [90] (30.0 dBm)
* 5460 MHz [92] (30.0 dBm)
* 5470 MHz [94] (30.0 dBm)
* 5480 MHz [96] (30.0 dBm)
* 5490 MHz [98] (30.0 dBm)
* 5500 MHz [100] (30.0 dBm)
* 5510 MHz [102] (30.0 dBm)
* 5520 MHz [104] (30.0 dBm)
* 5530 MHz [106] (30.0 dBm)
* 5540 MHz [108] (30.0 dBm)
* 5550 MHz [110] (30.0 dBm)
* 5560 MHz [112] (30.0 dBm)
* 5570 MHz [114] (30.0 dBm)
* 5580 MHz [116] (30.0 dBm)
* 5590 MHz [118] (30.0 dBm)
* 5600 MHz [120] (30.0 dBm)
* 5610 MHz [122] (30.0 dBm)
* 5620 MHz [124] (30.0 dBm)
* 5630 MHz [126] (30.0 dBm)
* 5640 MHz [128] (30.0 dBm)
* 5650 MHz [130] (30.0 dBm)
* 5660 MHz [132] (30.0 dBm)
* 5670 MHz [134] (30.0 dBm)
* 5680 MHz [136] (30.0 dBm)
* 5690 MHz [138] (30.0 dBm)
* 5700 MHz [140] (30.0 dBm)
* 5710 MHz [142] (30.0 dBm)
* 5720 MHz [144] (30.0 dBm)
* 5725 MHz [145] (30.0 dBm)
* 5730 MHz [146] (30.0 dBm)
* 5735 MHz [147] (30.0 dBm)
* 5740 MHz [148] (30.0 dBm)
* 5745 MHz [149] (30.0 dBm)
* 5750 MHz [150] (30.0 dBm)
* 5755 MHz [151] (30.0 dBm)
* 5760 MHz [152] (30.0 dBm)
* 5765 MHz [153] (30.0 dBm)
* 5770 MHz [154] (30.0 dBm)
* 5775 MHz [155] (30.0 dBm)
* 5780 MHz [156] (30.0 dBm)
* 5785 MHz [157] (30.0 dBm)
* 5790 MHz [158] (30.0 dBm)
* 5795 MHz [159] (30.0 dBm)
* 5800 MHz [160] (30.0 dBm)
* 5805 MHz [161] (30.0 dBm)
* 5810 MHz [162] (30.0 dBm)
* 5815 MHz [163] (30.0 dBm)
* 5820 MHz [164] (30.0 dBm)
* 5825 MHz [165] (30.0 dBm)
* 5830 MHz [166] (30.0 dBm)
* 5840 MHz [168] (30.0 dBm)
* 5850 MHz [170] (30.0 dBm)
* 5860 MHz [172] (30.0 dBm)
* 5870 MHz [174] (30.0 dBm)
* 5880 MHz [176] (30.0 dBm)
* 5890 MHz [178] (30.0 dBm)
* 5900 MHz [180] (30.0 dBm)
* 5910 MHz [182] (30.0 dBm)
* 5920 MHz [184] (30.0 dBm)
* 5930 MHz [186] (30.0 dBm)
* 5940 MHz [188] (30.0 dBm)
* 5950 MHz [190] (30.0 dBm)
* 5960 MHz [192] (30.0 dBm)
* 5970 MHz [194] (30.0 dBm)
* 5980 MHz [196] (30.0 dBm)
* 5990 MHz [198] (30.0 dBm)
* 6000 MHz [200] (30.0 dBm)
* 6010 MHz [202] (30.0 dBm)
* 6020 MHz [204] (30.0 dBm)
* 6030 MHz [206] (30.0 dBm)
* 6040 MHz [208] (30.0 dBm)
* 6050 MHz [210] (30.0 dBm)
* 6060 MHz [212] (30.0 dBm)
* 6070 MHz [214] (30.0 dBm)
* 6080 MHz [216] (30.0 dBm)
* 6090 MHz [218] (30.0 dBm)
* 6100 MHz [220] (30.0 dBm)
* 6110 MHz [222] (30.0 dBm)
* 6120 MHz [224] (30.0 dBm)
* 6130 MHz [226] (30.0 dBm)
* 6140 MHz [228] (30.0 dBm)
Supported commands:
* set_interface
* new_key
* join_ibss
* set_pmksa
* del_pmksa
* flush_pmksa
* connect
* disconnect
software interface modes (can always be added):
interface combinations are not supported
Device supports scan flush.
Supported extended features:
# iw dev
phy#0
Interface wlp8s0
ifindex 3
wdev 0x1
addr 78:e4:00:f1:b6:b4
type managed
#iw reg get
global
country BY: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW
(5490 - 5710 @ 160), (N/A, 27), (0 ms), DFS
#ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:05.0/0000:08:00.0 ==
modalias : pci:v000014E4d00004357sv0000105Bsd0000E021bc02sc80i00
vendor : Broadcom Inc. and subsidiaries
model : BCM43225 802.11b/g/n (T77H103.00 Wireless Half-size Mini PCIe Card)
driver : bcmwl-kernel-source - distro non-free
#lsmod
Module Size Used by
rfcomm 81920 4
cmac 16384 13
algif_hash 16384 6
algif_skcipher 16384 6
af_alg 24576 26 algif_hash,algif_skcipher
bnep 24576 3
uvcvideo 98304 0
videobuf2_vmalloc 20480 1 uvcvideo
ec_sys 16384 0
videobuf2_memops 20480 1 videobuf2_vmalloc
btusb 57344 0
videobuf2_v4l2 24576 1 uvcvideo
btrtl 24576 1 btusb
videobuf2_common 49152 2 videobuf2_v4l2,uvcvideo
btbcm 16384 1 btusb
btintel 24576 1 btusb
videodev 225280 3 videobuf2_v4l2,uvcvideo,videobuf2_common
bluetooth 581632 33 btrtl,btintel,btbcm,bnep,btusb,rfcomm
mc 53248 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common
ecdh_generic 16384 2 bluetooth
ecc 28672 1 ecdh_generic
xt_CHECKSUM 16384 1
xt_MASQUERADE 20480 3
xt_conntrack 16384 1
ipt_REJECT 16384 2
nf_reject_ipv4 16384 1 ipt_REJECT
xt_tcpudp 20480 9
ip6table_mangle 16384 1
ip6table_nat 16384 1
iptable_mangle 16384 1
iptable_nat 16384 1
nf_nat 40960 3 ip6table_nat,iptable_nat,xt_MASQUERADE
nf_conntrack 139264 3 xt_conntrack,nf_nat,xt_MASQUERADE
nf_defrag_ipv6 24576 1 nf_conntrack
nf_defrag_ipv4 16384 1 nf_conntrack
libcrc32c 16384 2 nf_conntrack,nf_nat
nf_tables 135168 0
nfnetlink 16384 1 nf_tables
ip6table_filter 16384 1
ip6_tables 32768 3 ip6table_filter,ip6table_nat,ip6table_mangle
iptable_filter 16384 1
bpfilter 32768 0
bridge 176128 0
stp 16384 1 bridge
llc 16384 2 bridge,stp
aufs 262144 0
overlay 114688 0
snd_seq_midi 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_hda_codec_realtek 118784 1
snd_hda_codec_hdmi 61440 1
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
ledtrig_audio 16384 2 snd_hda_codec_generic,snd_hda_codec_realtek
edac_mce_amd 32768 0
snd_hda_intel 53248 6
snd_rawmidi 36864 1 snd_seq_midi
snd_intel_dspcfg 24576 1 snd_hda_intel
wl 6455296 0
joydev 24576 0
snd_hda_codec 131072 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
input_leds 16384 0
snd_hda_core 90112 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 20480 1 snd_hda_codec
snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event
serio_raw 20480 0
acer_wmi 24576 0
sparse_keymap 16384 1 acer_wmi
wmi_bmof 16384 0
k10temp 16384 0
snd_pcm 106496 5 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
snd_timer 36864 2 snd_seq,snd_pcm
snd 90112 22 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
cfg80211 704512 1 wl
soundcore 16384 1 snd
mac_hid 16384 0
kvm_amd 98304 0
ccp 86016 1 kvm_amd
kvm 663552 1 kvm_amd
binfmt_misc 24576 1
sch_fq_codel 20480 5
parport_pc 40960 0
ppdev 24576 0
lp 20480 0
parport 53248 3 parport_pc,lp,ppdev
ip_tables 32768 3 iptable_filter,iptable_nat,iptable_mangle
x_tables 40960 11 ip6table_filter,xt_conntrack,iptable_filter,xt_tcpudp,xt_CHECKSUM,ip6_tables,ipt_REJECT,ip_tables,ip6table_mangle,xt_MASQUERADE,iptable_mangle
autofs4 45056 2
hid_logitech_hidpp 40960 0
hid_logitech_dj 24576 0
hid_generic 16384 0
usbhid 57344 1 hid_logitech_dj
hid 131072 4 usbhid,hid_generic,hid_logitech_dj,hid_logitech_hidpp
radeon 1474560 24
i2c_algo_bit 16384 1 radeon
ttm 106496 1 radeon
pata_acpi 16384 0
psmouse 155648 0
drm_kms_helper 184320 1 radeon
pata_atiixp 16384 0
syscopyarea 16384 1 drm_kms_helper
i2c_piix4 28672 0
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
broadcom 24576 1
fb_sys_fops 16384 1 drm_kms_helper
bcm_phy_lib 16384 1 broadcom
drm 491520 13 drm_kms_helper,radeon,ttm
tg3 172032 0
ahci 40960 1
libahci 32768 1 ahci
video 49152 1 acer_wmi
wmi 32768 2 acer_wmi,wmi_bmof
#iw wlp8s0 scan
BSS 70:72:3c:12:de:58(on wlp8s0) # This is not my wifi
TSF: 0 usec (0d, 00:00:00)
freq: 2412
beacon interval: 100 TUs
capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
signal: -83.00 dBm
last seen: 11032 ms ago
SSID: I***
Supported rates: 1.0* 2.0* 5.5* 11.0* 9.0 18.0 36.0 54.0
DS Parameter set: channel 1
Extended supported rates: 6.0 12.0 24.0 48.0
Country: BY Environment: Indoor/Outdoor
Channels [1 - 13] @ 20 dBm
TIM: DTIM Count 0 DTIM Period 1 Bitmap Control 0x0 Bitmap[0] 0x22
RSN: * Version: 1
* Group cipher: TKIP
* Pairwise ciphers: TKIP CCMP
* Authentication suites: PSK
* Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
WPS: * Version: 1.0
* Wi-Fi Protected Setup State: 2 (Configured)
* UUID: bc329e00-1dd8-11b2-8601-70723c12de58
* RF Bands: 0x1
* Unknown TLV (0x1049, 6 bytes): 00 37 2a 00 01 20
ERP: <no flags>
HT capabilities:
Capabilities: 0x118e
HT20/HT40
SM Power Save disabled
TX STBC
RX STBC 1-stream
Max AMSDU length: 3839 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: No restriction (0x00)
HT RX MCS rate indexes supported: 0-15, 32
HT TX MCS rate indexes are undefined
HT operation:
* primary channel: 1
* secondary channel offset: above
* STA channel width: any
* RIFS: 0
* HT protection: 20 MHz
* non-GF present: 1
* OBSS non-GF present: 0
* dual beacon: 0
* dual CTS protection: 0
* STBC beacon: 0
* L-SIG TXOP Prot: 0
* PCO active: 0
* PCO phase: 0
Overlapping BSS scan params:
* passive dwell: 20 TUs
* active dwell: 10 TUs
* channel width trigger scan interval: 300 s
* scan passive total per channel: 200 TUs
* scan active total per channel: 20 TUs
* BSS width channel transition delay factor: 5
* OBSS Scan Activity Threshold: 0.25 %
Extended capabilities:
* HT Information Exchange Supported
WMM: * Parameter version 1
* BE: CW 15-1023, AIFSN 3
* BK: CW 15-1023, AIFSN 7
* VI: CW 7-15, AIFSN 2, TXOP 3008 usec
* VO: CW 3-7, AIFSN 2, TXOP 1504 usec
BSS Load:
* station count: 2
* channel utilisation: 15/255
* available admission capacity: 31250 [*32us]
#dmesg | grep wl
[ 10.347080] wl: loading out-of-tree module taints kernel.
[ 10.347088] wl: module license 'MIXED/Proprietary' taints kernel.
[ 10.647638] wl: module verification failed: signature and/or required key missing - tainting kernel
[ 10.834329] wlan0: Broadcom BCM4357 802.11 Hybrid Wireless Controller 6.30.223.271 (r587334)
[ 21.203824] wl 0000:08:00.0 wlp8s0: renamed from wlan0
[ 2521.001083] ERROR @wl_dev_intvar_get :
[ 2521.001090] ERROR @wl_cfg80211_get_tx_power :
#dmesg | grep 80211
[ 9.948749] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 9.996862] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 2521.001090] ERROR @wl_cfg80211_get_tx_power :