The bug disappeared with kernel 5.0.0-29-generic. In the meantime I lived with the workaround mentioned in https://uberubuntu.info/questions/281929/ubuntu-1804-ethernet-nach-suspend-unterbrochen Thank you for your effort.
[Unit] Description=Fix RTL-8169 Driver on resume from suspend After=suspend.target
[Service] User=root Type=oneshot ExecStartPre=/sbin/modprobe -r r8169 ExecStart=/sbin/modprobe r8169 TimeoutSec=0 StandardOutput=syslog
[Install] WantedBy=suspend.target
The bug disappeared with kernel 5.0.0-29-generic. In the meantime I lived with the workaround mentioned in https:/ /uberubuntu. info/questions/ 281929/ ubuntu- 1804-ethernet- nach-suspend- unterbrochen
Thank you for your effort.
[Unit] target
Description=Fix RTL-8169 Driver on resume from suspend
After=suspend.
[Service] /sbin/modprobe -r r8169 /sbin/modprobe r8169 syslog
User=root
Type=oneshot
ExecStartPre=
ExecStart=
TimeoutSec=0
StandardOutput=
[Install] suspend. target
WantedBy=