WiFi does not come up

[PaulC]

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[s1que]

>sudo ifconfig wlp2s0 up (powers on device)
>sudo ifconfig wlp2s0 down (powers off device)

Not sure. That may help.

[s1que]

Here are some steps you can take to troubleshoot and resolve the issue:

1. Check Hardware Switches: Some laptops have physical switches or function keys that can toggle the wireless radio on and off. Look for a switch on the sides of your laptop or check your keyboard for a function key (e.g., Fn + F2) that might control the wireless radio. Make sure it's set to the "on" position.
   
2. Check Software Switches: Use the rfkill command to check the status of RF-kill switches:
   bash
   

rfkill list


If a device is blocked, it will show "yes" under the "BLOCKED" column. You can unblock it using:
bash


rfkill unblock <device_number>


Replace <device_number> with the number corresponding to your wireless device.

Check Network Manager: If you are using Network Manager, it might be managing the RF-kill state. Try restarting the Network Manager service:
bash


sudo service network-manager restart



Kernel Modules: Ensure that the necessary kernel modules for your wireless device are loaded. You can use the lsmod command to list loaded modules:
bash

1. lsmod | grep <your_wireless_module>
   
   
   Replace <your_wireless_module> with the name of the module associated with your wireless device.
   
2. Check BIOS/UEFI Settings: Some laptops have settings in the BIOS/UEFI that control the state of wireless devices. Check the BIOS/UEFI settings to ensure that the wireless device is enabled.
   
3. Update Drivers: Ensure that you have the latest drivers for your wireless device. You may need to download and install updated firmware or drivers from the manufacturer's website.
   
4. Reboot: Sometimes a simple reboot can resolve RF-kill issues. Restart your computer and see if the problem persists.

If none of the above solutions work, there may be a more complex issue with the drivers or kernel configuration. In such cases, you may need to seek assistance from your Linux distribution's support forums or community for further troubleshooting.