Why icon in status bar is disabled?

Linux and Unix-Like Ubuntu
1

Below the list of command to explain the status

michelangeli@hp:~$ lspci -nn | grep -i net
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 03)
04:00.0 Network controller [0280]: Ralink corp. RT2790 Wireless 802.11n 1T/2R PCIe [1814:0781]
michelangeli@hp:~$ 

michelangeli@hp:~$ sudo lshw -C network
[sudo] password for michelangeli: 
  *-network DISABLED      
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 03
       serial: 6c:62:6d:bf:d1:85
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:41 ioport:d800(size=256) memory:fbdff000-fbdfffff memory:faffc000-faffffff memory:fbdc0000-fbddffff
  *-network DISABLED
       description: Wireless interface
       product: RT2790 Wireless 802.11n 1T/2R PCIe
       vendor: Ralink corp.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlan0
       version: 00
       serial: 70:f1:a1:3c:39:84
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rt2800pci driverversion=3.13.0-77-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:19 memory:fbff0000-fbffffff
       
michelangeli@hp:~$ 

michelangeli@hp:~$ rfkill list
0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
michelangeli@hp:~$
2

The controller itself seems to be flawlessly recognized and working. Does it have a connection?

3

Yes, I have a wifi network , all has always worked.

4

And it works now, i.e. is connected and you can transfer data over it?

5

To me it looks like the wired symbol.

So, i'll ask you, is the wire connected?
Or do you use just the wifi? (which isnt the symbol shown)

6

No, i don't connect . I have a dual boot and working with microsoft windows with the same wifi.

7

Why not tell us it is dual boot in the first place!

(As sea observed it looks like a wired icon.)

Has it ever worked inside ubuntu?

If yes; look for what has changed, it could be an update.

A long shot...
If no; have you tried disabling it after use from the Windows side, and then, attempting to enable it from the ubuntu side; then assuming it works, when finished with it from the ubuntu side disable it ready for use with the Windows side...

I have known Windows to have a _mind_of_its_own_ for many aspects of HW access...