Ethernet did'nt wake up after suspend

[khitschler]

With the last kernel 4.18.0-25-generic there was no problem. Since upgrade to kernel 5.0.0-23-generic ethernet did not wake up after resume from suspend. During suspend the network link LED is flashing, after wake up from suspend the LED is off.

I returned to the former kernel and there was no problem with ethernet and suspend.

I found similar bug reports concerning the driver r8169, but they all are cover earlier versions of the kernel.

Unloading and reloading the driver is a workaround.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.0.0-23-generic 5.0.0-23.24~18.04.1
ProcVersionSignature: Ubuntu 5.0.0-23.24~18.04.1-generic 5.0.15
Uname: Linux 5.0.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Aug 11 12:14:27 2019
InstallationDate: Installed on 2019-06-17 (54 days ago)
InstallationMedia: Kubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)

[khitschler (klaus-hitschler)]

The machine is a LENOVO product: 10Y30009GE v: V530-15ARR

[khitschler (klaus-hitschler)]

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

[Valerio Bozzolan (bozzy)]

The previous service is awesome but it can be improved to cover hibernation and hybrid-hibernation as well:

# /etc/systemd/system/fix-r8169.service

```
[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 hibernate.target hybrid-sleep.target
```