After upgrade from 22.04 to 24.04 my notebooks wlan doesnt work

If your notebook's WLAN (Wi-Fi) isn't working after upgrading from Ubuntu 22.04 to 24.04, here are some steps you can take to troubleshoot and potentially resolve the issue:

1. **Check Wi-Fi Hardware Switch**: Ensure that the physical Wi-Fi hardware switch on your notebook (if present) is turned on. Sometimes, accidental toggling of this switch can disable Wi-Fi functionality.

2. **Restart Network Manager**: Restart the network manager service to refresh network connections. You can do this by opening a terminal and running the following command:
   ```
   sudo service network-manager restart
   ```

3. **Check for Disabled Wi-Fi**: Verify that Wi-Fi hasn't been accidentally disabled in the network settings. Open the network settings or network manager applet and ensure that Wi-Fi is enabled.

4. **Update Wi-Fi Drivers**: It's possible that the upgrade may have caused compatibility issues with your Wi-Fi drivers. Try updating your Wi-Fi drivers to the latest version. You can do this through the Additional Drivers utility or by manually downloading and installing drivers from the manufacturer's website.

5. **Check for Updates**: Run a system update to ensure that all packages, including Wi-Fi-related ones, are up to date. Open a terminal and run:
   ```
   sudo apt update && sudo apt upgrade
   ```

6. **Check for Known Issues**: Look for any known issues or compatibility problems related to your specific Wi-Fi hardware and Ubuntu 24.04. Check Ubuntu forums, community websites, or bug tracking databases for information on any reported issues and possible solutions.

7. **Check Hardware Compatibility**: Ensure that your Wi-Fi hardware is supported by Ubuntu 24.04. It's possible that certain older or less common Wi-Fi chipsets may not be fully compatible with newer Ubuntu releases.

8. **Temporary Workaround**: As a temporary workaround, you can try using a USB Wi-Fi adapter that is known to be compatible with Ubuntu 24.04. This can provide Wi-Fi connectivity until a permanent solution is found.

If none of these steps resolve the issue, you may need to gather more information about your specific Wi-Fi hardware and any error messages you encounter, and then seek assistance from the Ubuntu community forums or other support channels for further troubleshooting.

Doesnt wirk, i connected The service with Network cable and this also doesnt Work.

I have Seen an Error at bootup The x.509 certificate is Missing...

Whats now, new Install?