Arch Linux

Sellerie

Member

Registered: 2018-08-20

Posts: 5

[SOLVED] No network activity possible after system upgrade

HI,

I recently did a full system update after the system was powered off for about 3 weeks.
After rebooting, network is no longer working:
Network devices still get recognized, I can get an IP address via DHCP, but when trying to open webpages,
connecting to other machines via SSH or trying to ping anything ends up in a timeout. Even a ping to localhost fails
I tried this with both (onboard) ethernet interfaces and a wifi USB dongle in multiple ethernet and Wifi networks.
Either WiFi and Ethernet are working on the current arch live iso from (archlinux-2018.08.01-x86_64) and on Windows 8.1.
Hardware is a Gigabyte GA-Z170X Gaming 7 motherboard and I use linux version 4.18.4 from the archlinux non-testing repos.
Kernels tested that are not working:
linux-4.17.14.arch1-1-x86_64
linux-4.18.arch1-1-x86_64
linux-4.18.4.arch1-1-x86_64

That's why I'm in doubt that it is a kernel issue.
Does anyone know how to debug this?

Best regards
Sellerie

Last edited by Sellerie (2018-08-25 10:55:01)

ooo

Member

Registered: 2013-04-10

Posts: 1,638

Re: [SOLVED] No network activity possible after system upgrade

I also doubt this has anything to do with kernel, but did you try if linux-lts works?

Please post the pacman.log from the update that introduced this issue.
How did you configure your network? netctl or something else?

Sellerie

Member

Registered: 2018-08-20

Posts: 5

Re: [SOLVED] No network activity possible after system upgrade

Solved the problem myself:

Apparently a recent ufw update changed some configs to block literally everything, because after typing `ufw disable` everything just started working again.