Dann zeig bitte noch was udev zu dem Empfänger sagt: udevadm info --query=all --name /dev/ttyACM0
Sorry, die Frage hatte ich übersehen.
Hier die Ausgabe:
P: /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/tty/ttyACM0
N: ttyACM0
S: irman
S: serial/by-id/usb-Atric_Development_GbR_Atric_IR-Wakeup_USB-if00
S: serial/by-path/pci-0000:00:1a.0-usb-0:1.3:1.0
E: DEVLINKS=/dev/serial/by-path/pci-0000:00:1a.0-usb-0:1.3:1.0 /dev/irman /dev/serial/by-id/usb-Atric_Development_GbR_Atric_IR-Wakeup_USB-if00
E: DEVNAME=/dev/ttyACM0
E: DEVPATH=/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/tty/ttyACM0
E: ID_BUS=usb
E: ID_MODEL=Atric_IR-Wakeup_USB
E: ID_MODEL_ENC=Atric\x20IR-Wakeup\x20USB\x20\x20\x20\x20\x20\x20
E: ID_MODEL_FROM_DATABASE=7 Series/C216 Chipset Family USB Enhanced Host Controller
E: ID_MODEL_ID=f844
E: ID_PATH=pci-0000:00:1a.0-usb-0:1.3:1.0
E: ID_PATH_TAG=pci-0000_00_1a_0-usb-0_1_3_1_0
E: ID_PCI_CLASS_FROM_DATABASE=Serial bus controller
E: ID_PCI_INTERFACE_FROM_DATABASE=EHCI
E: ID_PCI_SUBCLASS_FROM_DATABASE=USB controller
E: ID_REVISION=0100
E: ID_SERIAL=Atric_Development_GbR_Atric_IR-Wakeup_USB
E: ID_TYPE=generic
E: ID_USB_CLASS_FROM_DATABASE=Communications
E: ID_USB_DRIVER=cdc_acm
E: ID_USB_INTERFACES=:020201:0a0000:
E: ID_USB_INTERFACE_NUM=00
E: ID_VENDOR=Atric_Development_GbR
E: ID_VENDOR_ENC=Atric\x20Development\x20GbR\x20\x20\x20\x20
E: ID_VENDOR_FROM_DATABASE=Microchip Technology, Inc.
E: ID_VENDOR_ID=04d8
E: MAJOR=166
E: MINOR=0
E: SUBSYSTEM=tty
E: TAGS=:systemd:
E: USEC_INITIALIZED=3216371
VG
Bernhard