Hallo Gemeinde, ich verwende den CAN-Bus nun schon über 18 Monate, mit dem gestrigen Debian Update wird der CAN-Bus-USB-Adapter aber nach einem Reboot nicht mehr aktiv gestartet. Hier mal meine Config Ich habe die Datei /etc/systemd/network/80-can.network mit dem nachfolgenden Inhalt. #################################### [Match] Name=can* #[Link] #RequiredForOnline=no [CAN] BitRate=250000 RestartSec=100ms #################################### sudo systemctl restart systemd-networkd (.open3e) christopheradm@CAN-2-USB:~/open3e$ ip -details link show can0 3: can0: <NOARP,ECHO> mtu 16 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 10 link/can promiscuity 0 allmulti 0 minmtu 0 maxmtu 0 can state STOPPED restart-ms 0 bitrate 250000 sample-point 0.875 tq 250 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1 brp 12 gs_usb: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..1024 brp_inc 1 clock 48000000 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535 tso_max_size 65536 tso_max_segs 65535 gro_max_size 65536 parentbus usb parentdev 1-1:1.0 sudo systemctl status systemd-networkd ● systemd-networkd.service - Network Configuration Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; preset: enabled) Active: active (running) since Mon 2025-09-08 10:24:26 CEST; 27s ago TriggeredBy: ● systemd-networkd.socket Docs: man:systemd-networkd.service(8) man:org.freedesktop.network1(5) Main PID: 588 (systemd-network) Status: "Processing requests..." Tasks: 1 (limit: 2300) Memory: 1.5M CPU: 36ms CGroup: /system.slice/systemd-networkd.service └─588 /lib/systemd/systemd-networkd Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: ens18: Link UP Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: ens18: Gained carrier Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: lo: Link UP Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: lo: Gained carrier Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: ens18: Gained IPv6LL Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: Enumeration completed Sep 08 10:24:26 CAN-2-USB systemd[1]: Started systemd-networkd.service - Network Configuration. Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: can0: Configuring with /etc/systemd/network/80-can.network. Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: can0: Failed to set CAN interface configurations: Device doesn't support restart from Bus Off. Operation not supported Sep 08 10:24:26 CAN-2-USB systemd-networkd[588]: can0: Failed Wenn ich auf der CLLI den nachfolgenden Befehl absetzte, wird das Interface UP und funktioniert. christopheradm@CAN-2-USB:~$ sudo ip link set up can0 christopheradm@CAN-2-USB:~$ sudo systemctl status systemd-networkd ● systemd-networkd.service - Network Configuration Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; preset: enabled) Active: active (running) since Mon 2025-09-08 11:20:34 CEST; 40s ago TriggeredBy: ● systemd-networkd.socket Docs: man:systemd-networkd.service(8) man:org.freedesktop.network1(5) Main PID: 578 (systemd-network) Status: "Processing requests..." Tasks: 1 (limit: 2300) Memory: 1.5M CPU: 36ms CGroup: /system.slice/systemd-networkd.service └─578 /lib/systemd/systemd-networkd Sep 08 11:20:34 CAN-2-USB systemd-networkd[578]: lo: Link UP Sep 08 11:20:34 CAN-2-USB systemd-networkd[578]: lo: Gained carrier Sep 08 11:20:34 CAN-2-USB systemd-networkd[578]: ens18: Gained IPv6LL Sep 08 11:20:34 CAN-2-USB systemd-networkd[578]: Enumeration completed Sep 08 11:20:34 CAN-2-USB systemd[1]: Started systemd-networkd.service - Network Configuration. Sep 08 11:20:34 CAN-2-USB systemd-networkd[578]: can0: Configuring with /etc/systemd/network/80-can.network. Sep 08 11:20:34 CAN-2-USB systemd-networkd[578]: can0: Failed to set CAN interface configurations: Device doesn't support restart from Bus Off. Operation not supported Sep 08 11:20:34 CAN-2-USB systemd-networkd[578]: can0: Failed Sep 08 11:21:11 CAN-2-USB systemd-networkd[578]: can0: Link UP Sep 08 11:21:11 CAN-2-USB systemd-networkd[578]: can0: Gained carrier Hat hier einer eine Idee, wie ich dies gelöst bekomme? Danke für die Unterstützung. Lieben Gruß Christopher
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