Arch Linux

confiding0691

Member

Registered: 2025-02-26

Posts: 2

Wireguard Issues since Linux 6.13

Hello I have about 15% Package Loss and a very slow Connection using Wireguard with Network Manager.
My main ethernet connection is a Bridge for VMs and I think this issue started with Linux Kernel 6.13 because if I use the LTS Kernel at 6.12.16 it works fine.
More specifically I think it is Linux Kernel 6.13.3 but I am not sure, when I used the Linux Zen Kernel 6.13.2 it was fine aswell, but that since upgraded to 6.13.4

Can someone help me figure out if its a configuration issue or how to troubleshoot this?
Ofcourse I dont want to stay on the LTS Kernel but right now its hard given this issue.

gromit

Administrator

From: Germany

Registered: 2024-02-10

Posts: 1,523

Website

Re: Wireguard Issues since Linux 6.13

Could you try the previous versions from the arch linux archive?

sudo pacman -U https://archive.archlinux.org/packages/l/linux/linux-6.12.arch1-1-x86_64.pkg.tar.zst

sudo pacman -U https://archive.archlinux.org/packages/l/linux/linux-6.13.arch1-1-x86_64.pkg.tar.zst

confiding0691

Member

Registered: 2025-02-26

Posts: 2

Re: Wireguard Issues since Linux 6.13

Hey, with the previous version it worked better again. But since I now know of the problem I tested again, and there was also packet loss and slow start of connection, however barely noticable.
This was also on other devices, so I disabled the traffic shaper in my opnsense, which completely fixed everything.
I still have no idea why this problem became much worse and wireguard connections were basically unusable with the newer kernel versions.
If you still want to try to figure out why that is, I can enable traffic shaper again, otherwise my problem is solved, thanks for your help

Last edited by confiding0691 (2025-02-26 13:59:39)