Wi-fi disappears after rebooting from Windows 10 into Ubuntu 18.10

[lyova]

I am new to Ubuntu. I installed 18.10 version alongside Windows 10. Every time I boot and choose Ubuntu first, the Wi-fi is OK. Although if I choose to reboot in Windows and then select Ubuntu, there are no visible Wi-fi networks. So now, every time I want Wi-fi in Ubuntu, I have to shutdown my computer completely, boot, choose Ubuntu and then it is all OK. All drivers are checked and installed (no problems with adaptor). It's also not the problem with Wake-on-LAN ("link" led is on while rebooting). My machine is Dell E6230. Please help me out. Here is the wireless-info.txt file: https://pastebin.com/4gbZuH0k