I'm also unable to get the Switch Pro Controller working. I don't have any Bluetooth capability on this computer, so I've had to try using USB, but no matter what I do, Steam won't recognize it. I've tried two different udev rules, I've tried installing steam-devices, I've tried disconnecting it from the Switch to avoid accidentally turning the Switch on, I've tried different USB ports... nothing works.

• Steam client version (build number or date): August 29 2018, package version 1535576546
• Distribution (e.g. Ubuntu): Ubuntu 18.04.1 (64 bit)
• Opted into Steam client beta?: [Yes/No] Yes
• Have you checked for system updates?: [Yes/No] Yes

@dindon-sournois, where did you get the log from?

@yaomtc You can get them by starting steam in a terminal or in the file /tmp/dumps/$USER_stdout.txt

Local Device Found
  type: 057e 2009
  path: 0003:0010:00
  serial_number:  - 0
  Manufacturer: 
  Product:      
  Release:      200
  Interface:    0

Unable to open local device: 0003:0010:00

steam-procontroller-output.txt

60-steam-input.rules.txt

It now works for me in Ubuntu. Not Solus, though... will have to figure out why.

Having fixed the rules in Solus it now works there too!

@yaomtc Could you detail what you did or dump your rules file?

I made sure there were no duplicate rules anywhere (like the old 99-steam-controller) and that /lib/udev/rules.d/60-steam-input.rules contained the following:

# Nintendo Switch Pro Controller over USB hidraw
KERNEL=="hidraw*", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="2009", MODE="0666"

# Nintendo Switch Pro Controller over bluetooth hidraw
KERNEL=="hidraw*", KERNELS=="*057E:2009*", MODE="0666"

Since you're on Arch rather than Ubuntu the file location may differ. (Like on Solus, it's /usr/lib64/, with a symlink pointing to it at /usr/lib/)

If that fails, you may want to uninstall Steam and do a clean install, otherwise take a look in Arch's bug tracker and post there if necessary.

I'm experiencing the same issue @yaomtc previously described where Steam won't recognize my switch controller over USB.

• Steam client version (build number or date): November 2, 2018, package version 1541202990
• Distribution (e.g. Ubuntu): Ubuntu 18.04.1 (64 bit)
• Opted into Steam client beta?: [Yes/No] Yes
• Have you checked for system updates?: [Yes/No] Yes

I installed steam, installed steam-devices, updated the rules file to include the USB and bluetooth lines for the switch pro controller. I've also tried uninstalling and re-installing steam via apt. Steam error logs produce the following:

Local Device Found
  type: 057e 2009
  path: 0003:0005:00
  serial_number:  - 0
  Manufacturer: 
  Product:      
  Release:      200
  Interface:    0

Unable to open local device: 0003:0005:00

while the output of lsusb shows:

Bus 003 Device 005: ID 057e:2009 Nintendo Co., Ltd

I own a steam controller and a PS4 controller which are detected by steam without issue. The switch controller is recognized by steam on another system running kubuntu 18.10.

99-steam-controller-perms.rules.txt
lsusb_output.log
steam_error_output.log

EDIT: This issue was resolved by adding a separate rule to /lib/udev/rules.d containing the following line:

ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="057e", ATTR{idProduct}=="2009", MODE="666"

Here the NS pro controller is detected in steam but not into the games. I'm using ubuntu 19.10 ( the problem already was present into 18.10 ), I updated my rules for adding Nintendo Switch pro controller but nothing to do, dead cells or rogue legacy both native games do not see the controller ...

Hi @kisak-valve, it seems to be working on up to date system.

Sorry for the wait.
I tried some native :

• Dead cells
• Rogue Legacy
• Salt and sanctuary

and some with steam play proton :

• Dark sous III
• Killer Instinct
• Street fighter V
• Metal gear Solid the phantom pain

The only where my Nintendo Switch pro controller isn't detected is Dead Cells ... the gamepad seems to be detected as a keyboard :/
I think that is a game specific behaviour so the situation is a pretty good.

My config is :
Ubuntu 20.10
Asus X570 TUF gaming motherboard
AMD ryzen 7 3700X
16 Go DDR4 @ 3600Mhz
Steam beta version of the 05/12/2020