Hi, 6.3.2 kernel identifies "Logitech" "ERGO M575" as "Logitech" "(\xc9_O\x04)", 6.2.15 works fine. 6.2.15 boot log: input: Logitech ERGO M575 as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.3/3-1.3:1.2/0003:046D:C52B.0003/0003:046D:4096.0005/input/input15 logitech-hidpp-device 0003:046D:4096.0005: input,hidraw1: USB HID v1.11 Mouse [Logitech ERGO M575] on usb-0000:00:1a.0-1.3/input2:1 6.3.2 boot log: input: Logitech \xc9_O\x04 as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.3/3-1.3:1.2/0003:046D:C52B.0003/0003:046D:4096.0005/input/input15 logitech-hidpp-device 0003:046D:4096.0005: input,hidraw2: USB HID v1.11 Mouse [Logitech \xc9_O\x04] on usb-0000:00:1a.0-1.3/input2:1 Thanks.