SteamOS recovery image is missing controller input in initial OOBE on handhelds

[matte-schwartz]

Your system information

• Steam client version: local (?)
• SteamOS version: SteamOS 3.7.7 [fresh install, pre-OOBE]
• Opted into Steam client beta?: Yes
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes

Please describe your issue in as much detail as possible:

When using the SteamOS Recovery Image available at https://store.steampowered.com/steamos, the first launch of the Steam Client after installation where the OOBE takes place is missing controller input. You have to complete the process with the touchscreen only, or with a mouse + keyboard.

Digging into it a bit, it seems like Steam does not like when deck or deck-uhid are set as InputPlumber targets in the OOBE client version. Switching to an xbox-elite controller target let me use the integrated controls on the device to complete OOBE.

After completing the OOBE and rebooting, the controller works with deck and deck-uhid targets as expected.

steam-logs.tar.gz

Steps for reproducing this issue:

1. Use the SteamOS recovery image from the Steam website on any handheld (tested w/ Legion Go S and Legion Go)
2. After installation, attempt to use the integrated controller in the OOBE