I need to handle a HID device (a barcode reader) with a custom Linux (v5.8).
I have a modulerized kernel which works as expected with other USB peripherals (storage and serial are known to work), but I seem unable to scan this device.
Plugging it into a desktop (Linux Mint "Ulyana", if it matters) I get a normal enumeration:
[525428.367216] usb 1-11: new full-speed USB device number 9 using xhci_hcd[525428.517071] usb 1-11: New USB device found, idVendor=05e0, idProduct=1200, bcdDevice= 1.00[525428.517077] usb 1-11: New USB device strings: Mfr=1, Product=2, SerialNumber=3[525428.517080] usb 1-11: Product: Symbol Bar Code Scanner[525428.517083] usb 1-11: Manufacturer: Symbol Technologies, Inc, 2008[525428.517086] usb 1-11: SerialNumber: S/N:0641F625A3A943949AF00BAB171ABFE2 Rev:PAACFS00-001-R023[525428.519932] input: Symbol Technologies, Inc, 2008 Symbol Bar Code Scanner as /devices/pci0000:00/0000:00:14.0/usb1/1-11/1-11:1.0/0003:05E0:1200.0005/input/input32[525428.579736] hid-generic 0003:05E0:1200.0005: input,hidraw4: USB HID v1.10 Keyboard [Symbol Technologies, Inc, 2008 Symbol Bar Code Scanner] on usb-0000:00:14.0-11/input0While on my target I see no sign of the new peripheral; lsusb displays just the root HUB even when I manually modprobe (what I think are) the relevant modules:
# lsusbBus 001 Device 001: ID 1d6b:0002# lsmodModule Size Used by Not taintedusbhid 23296 0 usbmon 19424 0 mt7603e 38048 0 mt76 31648 1 mt7603emac80211 380000 2 mt7603e,mt76sha256_generic 2240 0 libsha256 8480 1 sha256_genericehci_platform 4704 0 cfg80211 236736 3 mt7603e,mt76,mac80211ehci_hcd 37936 1 ehci_platformrfkill 8544 1 cfg80211usbcore 143456 4 usbhid,usbmon,ehci_platform,ehci_hcdlibarc4 832 1 mac80211mtk_eth 30208 0 usb_common 2768 3 usbmon,ehci_platform,usbcoreI am obviously missing something, but I seem unable to understand what.What should I cross-check?
Note: please feel free to ask for relevant details, I did not put too many things here just to avoid cluttering but I'm fully prepared to give all info deemed useful.