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I can't connect a wireless network wifi network in Ubuntu 18.04 LTS I followed some tutorials on the internet and not working! Can anyone help me?

I'm a really noob and new to this os! Please help me! As described in Ubuntu Desktop Guide>>Networking,web & email>>Wireless Networking>>Connect to a wireless network there is no thing as Wifi Not Connected in right side of top bar! What to do? Help me!!

Here is the screenshot: Here is the Screenshot

Here is the result when i run sudo lshw -c network in terminal,

*-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: eno1 version: 15 serial: f4:39:09:74:75:46 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-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII resources: irq:16 ioport:4000(size=256) memory:b1104000-b1104fff memory:b1100000-b1103fff *-network UNCLAIMED description: Network controller product: RTL8821CE 802.11ac PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: ioport:3000(size=256) memory:b1000000-b100ffff

Clazper
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  • I can see you have Bluetooth is there a hardware switch that turns off the wireless adapter? Make and model of the laptop please. Also I see you are on battery lets be on power while you troubleshoot. – David Feb 21 '21 at 12:39
  • I saw this but no works because i'm not seeing WIFI NOT CONNECTED that's why i'm asking it here – Clazper Feb 21 '21 at 12:39
  • If there is no adapter for what ever reason it will not say not connected as there is noting to connect. – David Feb 21 '21 at 12:40
  • @user535733 i update the question! I just run sudo lshw -c network and other one is not working! – Clazper Feb 21 '21 at 16:34
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    Please note that the wireless device is shown as UNCLAIMED. That means that it requies but does not yet have an appropriate driver. Follow the process in the duplicate to install the driver. – chili555 Feb 21 '21 at 17:13

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