i solved my problem of "ethernet card don't work after returning from suspension" by updating kernel from 4.15 to 4.20 (Ubuntu 18.04 Bionic) using UKUU
to install the latest kernel install Ubuntu Kernel Update Utility
$ sudo add-apt-repository ppa:teejee2008/ppa
$ sudo apt-get install ukuu
disable access control with the following command:
$ sudo xhost +
then install with ukuu
$ sudo ukuu
$ sudo ukuu --install-latest
and reboot
$ sudo reboot
i solved my problem of "ethernet card don't work after returning from suspension" by updating kernel from 4.15 to 4.20 (Ubuntu 18.04 Bionic) using UKUU
to install the latest kernel install Ubuntu Kernel Update Utility
$ sudo add-apt-repository ppa:teejee2008/ppa
$ sudo apt-get install ukuu
disable access control with the following command:
$ sudo xhost +
then install with ukuu
$ sudo ukuu
$ sudo ukuu --install-latest
and reboot
$ sudo reboot