我的路由器广播了两个 wifi 网络 - 一个在 2.4GHz，一个在 5GHz。使用手机上的 wifi 扫描仪，我可以看到两个网络都可用：
然而，当我使用高通公司的 AR93xx 无线网络适配器在我的桌面上扫描这些端点时，虽然能够看到 2.4GHz 网络，但根本看不到 5GHz 网络。
为什么会这样？它确实看到该区域内的其他 5Ghz 网络：
sudo iwlist wlo1 scan
wlo1 Scan completed :
Cell 01 - Address: AE:F8:CC:06:1F:18
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=47/70 Signal level=-63 dBm
Encryption key:on
ESSID:"Ziggo"
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000009cb5a032
Extra: Last beacon: 68ms ago
IE: Unknown: 00055A6967676F
IE: Unknown: 01088C129824B048606C
IE: Unknown: 030106
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
IE: Unknown: 3B025100
IE: Unknown: 2D1A2D0017FFFFFF00000000000000C2010100000000001004870100
IE: Unknown: 3D1606000400000000000000000000000000000000000000
IE: Unknown: 7F080500000200000040
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
Cell 02 - Address: <>
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=49/70 Signal level=-61 dBm
Encryption key:on
ESSID:"<my network>8-2.4GHz"
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000009cb59dd8
Extra: Last beacon: 68ms ago
IE: Unknown: 00135A6967676F383730383433382D322E3447487A
IE: Unknown: 01088C129824B048606C
IE: Unknown: 030106
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 46050200000000
IE: Unknown: 3B025100
IE: Unknown: 46050200000000
IE: Unknown: 2D1A2D0017FFFFFF00000000000000C2010100000000001004870100
IE: Unknown: 3D1606000400000000000000000000000000000000000000
IE: Unknown: 7F080500080200000040
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD860050F204104A00011010440001021057000101103B000103104700105B8D809E1B7D5AF2B391833B950A7DD41021000643656C656E6F10230006434C323430301024000232301042000531323334351054000800060050F204000110110012576972656C65737320415020434C32343030100800020000103C0001031049000600372A000120
Cell 03 - Address: 18:35:D1:27:CE:FF
Channel:44
Frequency:5.22 GHz (Channel 44)
Quality=44/70 Signal level=-66 dBm
Encryption key:on
ESSID:"Ziggo5072369"
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000005e12f11f09
Extra: Last beacon: 3368ms ago
IE: Unknown: 000C5A6967676F35303732333639
IE: Unknown: 01088C129824B048606C
IE: Unknown: 03012C
IE: Unknown: 073C4555202401172801172C01173001173401173801173C011740011764011E68011E6C011E70011E74011E78011E7C011E80011E84011E88011E8C011E
IE: Unknown: 460573D000000C
IE: Unknown: 2D1AEF091BFFFFFF0000000000000000000100000000000000000000
IE: Unknown: 3D162C050500000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0805000F0200000040
IE: Unknown: BF0CB2018033EAFF0000EAFF0000
IE: Unknown: C005012A00FCFF
IE: Unknown: C30402D2D2D2
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD9F0050F204104A0001101044000102103B000103104700105A1A5253659656489329A74B8B4A69671021001C41746865726F7320436F6D6D756E69636174696F6E732C20496E632E102300044150787810240008415078782D7878781042001253657269616C204E756D62657220486572651054000800060050F20400011011000941746865726F734150100800020104103C0001021049000600372A000120
Cell 04 - Address: E8:48:B8:76:E7:90
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=45/70 Signal level=-65 dBm
Encryption key:on
ESSID:"Donotpeek"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000350360840e
Extra: Last beacon: 68ms ago
IE: Unknown: 0009446F6E6F747065656B
IE: Unknown: 010882848B961224486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: WPA Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 2D1AAD0117FFFFFF0000000000000000000000000000001804871100
IE: Unknown: 3D1601000400000000000000000000000000000000000000
IE: Unknown: 7F080000080000000000
IE: Unknown: 0B05020000127A
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: 46050200000000
IE: Unknown: 330E040102030405060708090A0B0C0D
IE: Unknown: 200103
IE: Unknown: 23023F00
IE: Unknown: 0706444520010D23
IE: Unknown: BF0CB179C233EAFF9204EAFF9204
IE: Unknown: C005000000EAFF
IE: Unknown: DD07000C430B000000
IE: Unknown: DD21000CE708000000BF0CB101C0332AFF92042AFF9204C0050000002AFFC303010202
IE: Unknown: DD1E001D0F100204000000000000000000000000000000000000000000000000
IE: Unknown: DD1E003192100204000000000000000000000000000000000000000000000000
Cell 05 - Address: 18:35:D1:27:CE:F9
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=50/70 Signal level=-60 dBm
Encryption key:on
ESSID:"Ziggo5072369"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000005e27af80fe
Extra: Last beacon: 68ms ago
IE: Unknown: 000C5A6967676F35303732333639
IE: Unknown: 010882848B968C129824
IE: Unknown: 030101
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: 460573D000000C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000001000000000406E6A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F0805000F0200000040
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD9F0050F204104A0001101044000102103B000103104700105A1A5253659656489329A74B8B4A69671021001C41746865726F7320436F6D6D756E69636174696F6E732C20496E632E102300044150787810240008415078782D7878781042001253657269616C204E756D62657220486572651054000800060050F20400011011000941746865726F734150100800020104103C0001021049000600372A000120
Cell 06 - Address: F6:57:40:9A:1A:48
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=29/70 Signal level=-81 dBm
Encryption key:on
ESSID:"Ziggo"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000e842d48e13
Extra: Last beacon: 68ms ago
IE: Unknown: 00055A6967676F
IE: Unknown: 010882848B968C129824
IE: Unknown: 030101
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000001000000000406E6A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080500000200000040
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
Cell 07 - Address: 2A:35:D1:27:CE:F9
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=50/70 Signal level=-60 dBm
Encryption key:on
ESSID:"Ziggo"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000005e27aec774
Extra: Last beacon: 68ms ago
IE: Unknown: 00055A6967676F
IE: Unknown: 010882848B968C129824
IE: Unknown: 030101
IE: Unknown: 0706455520010D14
IE: Unknown: 2A0100
IE: Unknown: 3204B048606C
IE: Unknown: 2D1AAD011BFFFF0000000000000000000001000000000406E6A70C00
IE: Unknown: 3D1601080400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080500000200000040
IE: Unknown: DD180050F2020101840003A4000027A4000042435E0062322F00
IE: Unknown: DD0900037F01010000FF7F
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : 802.1x
Cell 08 - Address: F4:E3:FB:0B:1E:28
Channel:8
Frequency:2.447 GHz (Channel 8)
Quality=29/70 Signal level=-81 dBm
Encryption key:on
ESSID:"VFNL-0B1E21"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000004cc9579718d
Extra: Last beacon: 5340ms ago
IE: Unknown: 000B56464E4C2D304231453231
IE: Unknown: 010882848B962430486C
IE: Unknown: 030108
IE: Unknown: 050400010000
IE: Unknown: 2A0104
IE: Unknown: 2F0104
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 32040C121860
IE: Unknown: 2D1AAC181BFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1608000400000000000000000000000000000000000000
IE: Unknown: 4A0E14000A002C01C800140005001900
IE: Unknown: 7F080100000000000040
IE: Unknown: DD1000E0FC80000000230000000000000000
IE: Unknown: DD310050F204104A000110104400010210470010FEE92F84D03DC72AD390C7806836E245103C0001031049000600372A000120
IE: Unknown: DD090010180203000C0000
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
Cell 09 - Address: 90:5C:44:DA:33:57
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=23/70 Signal level=-87 dBm
Encryption key:on
ESSID:"ZiggoDF4EEFE"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000004011961d97
Extra: Last beacon: 68ms ago
IE: Unknown: 000C5A6967676F44463445454645
IE: Unknown: 010882848B961224486C
IE: Unknown: 03010B
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: Unknown: 0706455520010D14
IE: Unknown: 2D1AAC0117FFFF000000000000000000000000000000000000000000
IE: Unknown: 3D160B000400000000000000000000000000000000000000
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: 7F080100080000000000
IE: Unknown: 0B0501005B127A
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
IE: Unknown: 46052200000000
IE: Unknown: DDA70050F204104A0001101044000102103B0001031047001088547A001DD211B286015543A04A64431021001852616C696E6B20546563686E6F6C6F67792C20436F72702E1023001C52616C696E6B20576972656C6573732041636365737320506F696E74102400065254323836301042000831323334353637381054000800060050F20400011011000952616C696E6B415053100800020000103C0001011049000600372A000120
IE: Unknown: DD07000C4300000000