Order of Steam Input controllers as exposed to non-steam games is incorrect

[Stewmath]

Your system information

• Steam Deck
• Steam client version (build number or date): 1710458266
• Distribution (e.g. Ubuntu): SteamOS 3.5.19
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

I'm unsure if this is "normal" behavior, but it's very peculiar to me - the order of controllers in Steam Input doesn't seem to line up with how they're detected by applications.

UPDATE: I'm observing this in the emudeck (non-steam) version of RetroArch, but NOT in the steam version of retroarch. I'm also seeing this behavior in dolphin installed via emudeck.

As an example, when using RetroArch on my steam deck:

• If no controllers are detected, the steam deck itself is "Steam Virtual Gamepad 0"
• When an external gamepad is connected, there is now a "Steam Virtual Gamepad 1" In addition to that.
  • By going to "Controller Settings -> Reorder Controller", I can see that whichever controller was used to start the application is assigned as the first controller. This seems sensible, however...
  • The order they are shown in the "Reorder Controllers" window is the opposite order they're listed as in Retroarch, ie. Steam's "Controller 1" is detected as "Steam Virtual Gamepad 1" and "Controller 2" is detected as "Steam Virtual Gamepad 0".

This has the following bizarre implications:

• When I start Retroarch with no external controllers on my steam deck, it detects the steam deck as "Steam Virtual Gamepad 0" and correctly assigns that as "player 1". However...
• When I start Retroarch with an external controller, it assigns "Steam Virtual Gamepad 0" as player 1 and "Steam Virtual Gamepad 1" as player 2... but because Steam Input reversed their order, the controller I used to start Retroarch is always player 2 - no matter which controller I used! This means I need to manually rearrange the order every time I start the application.
  • While I could simply remap the controllers in Retroarch, this is not a good solution, as I would need to modify the configuration when I decide to use my steam deck in portable mode... and then modify it back when I want to use it on my TV. Steam Input should be able to make this seamless.

Expected behavior

The order of controllers should match the order shown in the "Reorder Controller" window, that is, the controller that was used to start the application should be the 1st controller.

Steps for reproducing this issue:

1. Install Retroarch or Dolphin via EmuDeck
2. Connect an external controller to a steam deck
3. Launch a Retroarch/Dolphin or other non-steam application where you can observe the numbering of the controllers
4. Observe that the controller ordering does not match the order shown in Steam's "Reorder Controller" window

[Stewmath]

UPDATE: I'm observing this behavior only when Retroarch is run as a non-steam game. The steam version of Retroarch doesn't have this issue. Dolphin also has the same issue (both were installed via emudeck). I've updated the bug description.

[Stewmath]

Oddly I'm now only experiencing this when 2 controllers are connected? Using a dualshock 4 and a steam controller, in addition to the deck of course, for a total of 3 controllers.