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The Steam-conflict gate scanned /sys/bus/hid/devices for non-virtual 28DE devices, but the usbip/gadget virtual Decks present a REAL USB device (vhci resolves through vhci_hcd, not /devices/virtual/) — so a just-ended session's pad still detaching, or a concurrent session's live one, read as "physical Steam controller attached" and degraded every back-to-back Deck session to DualSense (observed live on Bazzite). Exclude our pads by their PFDK… serial (HID_UNIQ), with the vhci_hcd path as belt and braces. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>