Arch Linux

snack

Member

From: Italy

Registered: 2009-01-13

Posts: 866

Laggy bluetooth mouse with cabled network on external dongle

I noticed that my bluetooth mouse, which works perfectly when I use my laptop with WiFi connection, becomes really laggy when I'm using a cabled connection. The laptop is a Dell XPS 15 9570 from 2018, and I use a Startech DKT30CSDHPD USB-C dongle that provides the ethernet port. I made several tests by removing and attaching the ethernet cable and the issue is 100% reproducible.
I don't have an idea about what can cause this malfunctioning, any hints? Thanks.

Maritim

Member

Registered: 2024-05-17

Posts: 10

Re: Laggy bluetooth mouse with cabled network on external dongle

Is it possible to test the following configurations?

1. Bluetooth via the mentioned USB-C hub, Ethernet directly into the laptop without the USB-C hub
2. Bluetooth directly with the laptop without the USB-C hub, Ethernet via the USB-C hub

If either of these configurations work I'm thinking maybe it could be a question of bandwidth or even interference from the Ethernet current disrupting the Bluetooth signal even if it sounds quite odd.