Ubuntu双启动环境下无法连接Spectrum Wi-Fi求助

Hey Maureen, sorry to hear you're stuck with this Wi-Fi hassle after setting up dual boot with Windows—let's work through this step by step to get you back online.

First, let's confirm if your system actually recognizes your Wi-Fi hardware, since the error says no adapter was found. Open up your terminal and run these commands:

• For internal built-in Wi-Fi adapters: lspci -nn | grep -i network
• For USB-connected Wi-Fi adapters: lsusb

Copy the output from whichever command shows a network device and share it—this will tell us exactly what Wi-Fi chip you're using, which is critical for finding the right fix.

Next, double-check the basics for Wi-Fi toggles:

• Some laptops have a physical switch on the side or front to turn Wi-Fi on/off—make sure that's flipped to the "on" position.
• Try pressing the Fn key + the Wi-Fi icon key (usually F2, F3, or similar) to toggle wireless connectivity. Dual boot can sometimes mess with these software-controlled switches.

Then, check Ubuntu's built-in driver manager:

1. Open "Software & Updates" from your app menu
2. Switch to the "Additional Drivers" tab
3. Look for any listed proprietary Wi-Fi drivers (often labeled for Broadcom or Realtek chips—these are usually the recommended ones)
4. Select the driver, click "Apply Changes", and restart your system

If that doesn't work, check your BIOS/UEFI settings:

• Restart your computer and press the key to enter BIOS (usually Del, F2, or F10—look for the prompt on boot)
• Find the "Secure Boot" option and disable it—some Wi-Fi drivers can't load when Secure Boot is enabled
• Save your changes and boot back into Ubuntu to see if the adapter is detected

Once your adapter is recognized, if you still need to connect to a hidden Spectrum network, you can use this terminal command:
nmcli dev wifi connect "YOUR_SSID" password "YOUR_WIFI_PASSWORD" hidden yes

Just replace YOUR_SSID and YOUR_WIFI_PASSWORD with your actual network details.

Let me know what the output of the hardware detection commands is, and we can narrow down the solution further!

备注：内容来源于stack exchange，提问作者Maureen Moore