Suspend disables Network

[Nona]

Hi,

I am having weird issue with Suspend disables Network permanently but system continue running.
Nothing that I tried can bring Network up.

Dmesg:

[ 4345.942540] skge 0000:04:06.0 enp4s6: disabling interface
[ 4346.003829] r8169 0000:03:00.0 enp3s0: Link is Down
[ 4346.471558] PM: suspend entry (deep)

Only reboot is solution for now.
Any help please ?

Motherboard: GA-78LMT-USB3-6-0
Kernel: 5.4.0-37-generic ( same issue through many kernels )
DISTRIB_DESCRIPTION="Linux Mint 19.3 Tricia"

[Nona]

Ok, problem solved.
I had second NIC plugged into PCI slot. This was good server grade Gigabit NIC, but arround 15 years old.
Once I removed it, all issues with Suspend/Wake up gone.

[Nona]

Update: removing second NIC does not resolve anything.
Those are last lines in dmesg and after that only reboot brings network back:

[12268.549952] r8169 0000:03:00.0 enp3s0: Link is Down
[12269.057560] PM: suspend entry (deep)
[12269.740438] Filesystems sync: 0.682 seconds

There is also pop-up message on screen:


Anybody know how can this be addressed to developers, like opening ticket, etc. ?

[Appoloin]

Have you tried disabling the network using "Network Manager" before suspending system?

[Nona]

Tried that today. The thing is, when I do Suspend manually, it is waking up with network On.
When system goes to Suspend when inactive, Network is Off and nothing can bring it up.

This is after wake-up and network down:

user@GA-78LMT-USB3-6-0:~$ sudo systemctl | grep Netw
NetworkManager-wait-online.service loaded active exited Network Manager Wait Online
NetworkManager.service loaded active running Network Manager
ntp.service loaded active running Network Time Service
systemd-resolved.service loaded active running Network Name Resolution
network-online.target loaded active active Network is Online
network.target loaded active active Network
nss-lookup.target loaded active active Host and Network Name Lookups

[Appoloin]

You can automate the turn off process using a systemd script

https://forum.manjaro.org/t/solved-qca6 ... pend/66232

[Nona]

Thank you for the link. I will definitely try this approach and see what can I do.