PC not detecting Wifi at all (Zorin 17.3 Core)

To help you we need to see which WLAN device your Toshiba Satellite L50-C-1T1 has implemented and further info about it (yet no configuration will be done first of all only looking at your system and it's WLAN).

Please open the terminal and copy and paste the following commands and run them. Then please post the output here:

lspci | grep -i network
cat /proc/cmdline

On your Toshiba Laptop it could be that the key combination Fn + F8 is your WLAN switch (instead F12). Let's give that a try, also look if a WLAN light is reacting to the keys switch.

This possible solution is essentially editing a text file that contains grub's (the bootloader) basic configuration settings, and adding instructions to disable PCIe power management that may be putting your wifi card to sleep too aggressively.

In that file, there should be a lin that begins with GRUB_CMDLINE_LINUX_DEFAULT= and contains some keywords in quotations. Here's mine in the nano terminal text editor:

Keep whatever is already inside the quotes and add pcie_port_pm=off before the closing quote, with the leading space to separate it from the existing content. Like so:

After you save the file (Ctrl+S in most visual editors including gedit or Ctrl+X, Y, Enter in nano) you then run sudo update-grub to make it apply the configuration changes so that the new PCIe power management instruction will be in effect the next time you boot into Zorin.

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The first command didn’t appear to do anything, and the second gave this out:

BOOT_IMAGE=/boot/vmlinuz-6.8.0-138-generic root=UUID=ae612995-8962-422a-86be-86aa4150e39d ro quiet splash pcie_port_pm=off vt.handoff=7

I followed these steps and it seemed to make a difference at first, but now I’m back to where I was before.

I can confirm that nothing happens and the indicators don’t seem to respond at all.

Your Toshiba Satellite L50-C-1T1 laptop should have a pci wlan module usual an Intel Dual Band Wireless-AC 3160, but it does not show up with the command: lspci | grep -i network

Additional we see with quiet splash pcie_port_pm=off that the autosuspend is already off. But the behavior with WLAN sometimes works but sometimes not points to a power problem (or loose contact).

To solve a power problem you need to get your laptop complete power free following these steps:

  1. Shutdown your laptop and remove the power cable
  2. Also remove the Battery
  3. Press the ON/OFF button for a minute
  4. Insert back the Battery
  5. Restart your laptop

Let's see if the wlan card is now visible with:

lspci | grep -i network

If wlan module appears now in the output, firmware and driver are needed:

sudo apt install linux-firmware
sudo modprobe iwlwifi   

Check the WLAN function.