@redmarsbluemoon Yes, stock Raspbian. No need for userland ds4drv :) Imperceptible latency atlhough I've never measured it, I can easily play even games like Street Fighter II.

Try updating your packages/kernel? apt dist-upgrade and rpi-update.

Also be careful about interference from other wireless sources (Wi-Fi, other 2.4 GHz devices)... Maybe try moving things around and seeing if that helps. Best of luck.

I had issues with Pi4 wifi too. In my case I was noticing it when sending files over Samba from W10 or using FTP, and also scraping problems. I'd get constant disconnects and transfer speeds of around 200kb/s even when it would stay working.

I found mentions online of known issues where noise from the HDMI output can disrupt the wifi signal. Every instance I saw talked about said it was only over a certain resolution (1440 I think), but I decided to try disconnecting my 5" screen anyway, which runs 800x480, and as soon as I did that the speeds went up to around 3-5MB/s and the connection stays stable.

@gordonfreemanjr do you have any other controllers plugged in? Did you map your keyboard as a controller? It may be worth going into RetroPie-setup and resetting your mappings and then remapping just to see if that fixes the light issue.

@quicksilver
It had passed 4 months before I actually tried your fix proposal.
It worked. The X-box controller is now fully compatible. Thank you!

@rodolfoaguilar @Firebird_WS6
I'm summing up what quicksilver proposed.
This solution worked for me.

Plug in a Keyboard While in Emulation Station press F4 to open the Terminal Type sudo nano /etc/modprobe.d/xpad.conf Change
xpad triggers_to_buttons=1 to xpad triggers_to_buttons=0 Press cntrl-x Accept the changes. Return back to Emulation Station by typing emulationstation Restart Retropie.
(In my case, I noticed that the X-box controller had started acting strangely while in Emulation Station.
The D-pad buttons swapped positions in Emulation Station as they were previously in PPSSPP.) Remap the controller in Emulation Station. Remap the controller in PPSSPP if necessary.
(In my case, this was not needed.)

I'm not sure why this issue is affecting some people and not others.
Apparently, the problem is caused by the Trigger buttons somehow.

Please add more info about your system, as detailed in https://retropie.org.uk/forum/topic/3/read-this-first.

What controller type/model are you using ?

@quicksilver Absolutely devastating. 2.4 GHz didn’t made the TV to couch distance...

@matchaman normally at a flee market you could find some in decent condition for like 5$ each and the kit is like 20$ so 25$ for a wireless OG controller would be the best but for me when i play my console games on my Pi i use the SN30 Pro and Pro+ but when i am on my Switch i use the official one they offer when you have the Nintendo online service (which i have not tested on my Pi yet).

I have a theory why this happened I had my channel width set to vht80 my 5g wasnt showing up either. It shows up now after changing it.

wireless super Nintendo work great $26 new from amazon

If the controller is plugged in with a cord it will detect it, but it will not detect the 8bitdo adapter. I didn't install a heat sink on the internal Bluetooth chip because I had this adapter and planned to use it. I don't know why it can't be detected.

Press Start to open the Emulationstation menu, then use the Input Configuration entry to re-configure your controller.

I believe that is a Windows only device

I have a similar behavior with the most recent version of Retropie running on my pi 3 B+. My Logitech F710 controller runs very well inside the Emulationstation, however if I start a games - regardless with kind of emulation - the controller stops to work.

Welcome to this forum.

Please provide all the information that is asked for in https://retropie.org.uk/forum/topic/3/read-this-first in addition to the vendor and model of the wireless keyboard.

@Jshhh Try using a RetroPie image and see if that works. If it does, the problem may be the kernel/firmware version in OSMC.

Thank you @seanbeedelicious ! Works like a charm.