Public bug reported:
I can reproduce this on two Ubuntu 26.04 machines with Datalogic QM2131
barcode scanners used as USB HID keyboards.
The scanner is detected correctly and an input event device is created,
but GNOME applications do not receive any typed input from it.
Example affected device:
05f9:221a Datalogic ADC, Inc. Handheld Barcode Scanner
The event device exists:
/dev/input/event3
ID_INPUT_KEYBOARD=1
ID_USB_INTERFACES=:030101:
But the live udev tags only show:
TAGS=:power-switch:
The parent input device is missing normal seat properties. Running
udevadm test shows:
sd-device: Failed to handle uevent entry 'UNIQ="S/N [TAB]E22N5326"',
ignoring: Invalid argument
sd-device: Failed to handle uevent entry 'HID_UNIQ=S/N [TAB]E22N5326',
ignoring: Invalid argument
On another affected machine, gnome-shell logged:
Could not open device /dev/input/event7:
GDBus.Error:System.Error.ENODEV: No such device
Expected:
The HID keyboard scanner should be assigned to the active graphical seat
and type into focused text fields.
Actual:
The scanner is detected, but GNOME/Wayland apps receive no input.
System is Ubuntu 26.04 LTS, systemd 259.5-0ubuntu3, udev 259.5-0ubuntu3
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: systemd 259.5-0ubuntu3
ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0
Uname: Linux 7.0.0-15-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
Date: Thu May 28 15:04:54 2026
InstallationDate: Installed on 2026-05-19 (9 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: ASUSTeK COMPUTER INC. NUC13ANKi3
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-15-generic
root=UUID=e50d7310-98c3-4cd9-96fb-dd82205ed578 ro quiet splash i915.enable_dc=0
intel_idle.max_cstate=2
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/16/2025
dmi.bios.release: 5.27
dmi.bios.vendor: Intel Corp.
dmi.bios.version: ANRPL357.0038.2025.0416.1002
dmi.board.name: NUC13ANBi3
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 60AS0040-MB2A15
dmi.chassis.type: 35
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 2.0
dmi.ec.firmware.release: 10.23
dmi.modalias:
dmi:bvnIntelCorp.:bvrANRPL357.0038.2025.0416.1002:bd04/16/2025:br5.27:efr10.23:svnASUSTeKCOMPUTERINC.:pnNUC13ANKi3:pvr90AR0031-M00040:rvnASUSTeKCOMPUTERINC.:rnNUC13ANBi3:rvr60AS0040-MB2A15:cvnASUSTeKCOMPUTERINC.:ct35:cvr2.0:skuNUC13ANKi3:pfaAN:
dmi.product.family: AN
dmi.product.name: NUC13ANKi3
dmi.product.sku: NUC13ANKi3
dmi.product.version: 90AR0031-M00040
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug hid input logind resolute udev
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https://bugs.launchpad.net/bugs/2154455
Title:
HID keyboard barcode scanner ignored by GNOME when udev UNIQ contains
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