Steam Deck

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[PSA] 2.4g Controllers and interference with USB 3 ports (e.g. docks) (feddit.org)

submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]

11 comments fedilink hide all child comments

So far I only found some obscure mention of this issue on reddit (somewhat buried too), but for the sake of not relying on that platform anymore I thought the info should be on lemmy.

I recently got an 8bitdo ultimate 2c wireless controller to try out with my steam deck which I mostly use docked in TV mode. (Edit: I use the jsaux 6-in-1 dock.)

After initial testing looked good (2.4g mode connects, all buttons work, rumble works) I quickly ran into an issue where the controller would disconnect and shut down every minute or so or begin to rumble continuously without apparent reason. Not so in Bluetooth mode or with a cable.

What fixed the issue for me was connecting the 2.4 dongle not directly to my dock (which only has USB 3 ports) but doing so via an extension cable (edit: just a cheap male to female USB extension, the shortest one I could get).

Apparently, the active USB 3 port causes some kind of interference with the 2.4g signal, which is fixed by a few cm of physical distance. My dongle is now lying maybe 5cm away from the dock and the controller works flawlessly.

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[–] [email protected] 19 points 1 week ago (1 children)

Yeah, USB3 produces 2.4GHz interference. Somehow many years after this became an understood issue, we still run into a bunch of USB3 devices with improper or usually nonexistent shielding.

[–] [email protected] 9 points 1 week ago

It's my first 2.4g device, so that was totally new to me. It also wasn't exactly the first hit on any search I tried.

I'm glad that the fix was at least cheap and simple and I didn't have to return the controller.