Linuxで利用可能なネットワークを見ることができないのはなぜですか？

私はカスタムLinuxディストリビューションを使用します。 Wi-Fiを有効にしようとすると、既存のネットワークは表示されません。私のWi-FiカードはIntel Wi-Fiリンク5100で、出力は次lspci -vvのとおりです。

Subsystem: Intel Corporation WiFi Link 5100 AGN
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 35
Region 0: Memory at d6d00000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
    Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
    Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Address: 00000000fee02004  Data: 402b
Capabilities: [e0] Express (v1) Endpoint, MSI 00
    DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 unlimited

ip linkプログラム

wlp5s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether 52:ce:71:xx:xx:xx brd ff:ff:ff:ff:ff:ff permaddr 00:22:fb:xx:xx:xx

ifconfig:

wlp5s0    Link encap:Ethernet  HWaddr 52:CE:71:XX:XX:XX
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0  TX bytes:0

何が問題なのかわかりません。助けてもらえますか？

sudo iwlist:

wlp5s0    Scan completed :
      Cell 01 - Address: 
                Channel:1
                Frequency:2.412 GHz (Channel 1)
                Quality=40/70  Signal level=-70 dBm  
                Encryption key:on
                ESSID:"ACT102474534110"
      Cell 02 - Address: 
                Channel:2
                Frequency:2.417 GHz (Channel 2)
                Quality=38/70  Signal level=-72 dBm  
                Encryption key:on
                ESSID:"Abhijit"
      Cell 03 - Address: 
                Channel:3
                Frequency:2.422 GHz (Channel 3)
                Quality=48/70  Signal level=-62 dBm  
                Encryption key:on
                ESSID:"gagsbuds"
      Cell 04 - Address: 
                Channel:5
                Frequency:2.432 GHz (Channel 5)
                Quality=34/70  Signal level=-76 dBm  
                Encryption key:on
                ESSID:"sanjay"
      Cell 05 - Address: 
                Channel:6
                Frequency:2.437 GHz (Channel 6)
                Quality=44/70  Signal level=-66 dBm  
                Encryption key:on
                ESSID:"The Devs"
      Cell 07 - Address: 
                Channel:8
                Frequency:2.447 GHz (Channel 8)
                Quality=35/70  Signal level=-75 dBm  
                Encryption key:on
                ESSID:"Tnet"
      Cell 08 - Address: 
                Channel:11
                Frequency:2.462 GHz (Channel 11)
                Quality=70/70  Signal level=-21 dBm  
                Encryption key:on
                ESSID:"MaANAS"
      Cell 09 - Address: 
                Channel:11
                Frequency:2.462 GHz (Channel 11)
                Quality=69/70  Signal level=-41 dBm  
                Encryption key:on
                ESSID:"DIRECT-np-BRAVIA"
      Cell 10 - Address: 
                Channel:13
                Frequency:2.472 GHz (Channel 13)
                Quality=24/70  Signal level=-86 dBm  
                Encryption key:on
                ESSID:"PanduHome"