Ubuntu 20.04 - Wifi not working

I'm new on Ubuntu, I'm trying it for my very first time and also facing some issues on it.

I noticed that my WiFi adapter is not working properly on Ubuntu. Simply, it doesn't show any WiFi network.

What is really crazy is that, if I 'try' Ubuntu from the installation drive, WiFi works excellent.

The device is Tp Link tl-wn781nd and looks like it has a realtek chipset under name RTL8188EE Wireless Network Adapter (information from command sudo lshw -class network)

I'm adding some information for your understanding:

iwconfig
lo no wireless extensions.
enp7s0 no wireless extensions.
wlp6s0 IEEE 802.11 ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry short limit:7 RTS thr=2347 B Fragment thr:off Power Management:off

sudo lshw -class network *-network description: Wireless interface product: RTL8188EE Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:06:00.0 logical name: wlp6s0 version: 01 serial: d0:37:45:71:63:e5 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtl8188ee driverversion=5.8.0-40-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11 resources: irq:62 ioport:e000(size=256) memory:fcc00000-fcc03fff *-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:07:00.0 logical name: enp7s0 version: 0c serial: b4:2e:99:9c:c8:83 size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.8.0-40-generic duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=192.168.0.171 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:37 ioport:d000(size=256) memory:fcb00000-fcb00fff memory:f0300000-f0303fff

Any clue on what could be the route cause of this issue.

Thanks!

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