Using POSIX realtime

lsmod | grep ec_generic sudo modprobe ec_generic lsmod | grep ec_generic

ec_generic             16384  0 ec_master             397312  1 ec_generic snd_hda_codec_generic    98304  1 snd_hda_codec_realtek ledtrig_audio          16384  1 snd_hda_codec_generic snd_hda_codec         188416  6 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda,snd_sof_intel_hda snd_hda_core          122880  9 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda snd                   126976  15 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_sof,snd_timer,snd_compress,snd_soc_core,snd_pcm ec_generic             16384  0 ec_master             397312  1 ec_generic snd_hda_codec_generic    98304  1 snd_hda_codec_realtek ledtrig_audio          16384  1 snd_hda_codec_generic snd_hda_codec         188416  6 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda,snd_sof_intel_hda snd_hda_core          122880  9 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda snd                   126976  15 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_sof,snd_timer,snd_compress,snd_soc_core,snd_pcm

Master0   Phase: Idle   Active: no   Slaves: 5   Ethernet devices:     Main: 80:ee:73:fd:0f:8b (attached)       Link: UP       Tx frames:   409178       Tx bytes:    24554240       Rx frames:   409177       Rx bytes:    24554180       Tx errors:   0       Tx frame rate [1/s]:    123    123    125       Tx rate [KByte/s]:      7.2    7.2    7.2       Rx frame rate [1/s]:    123    123    125       Rx rate [KByte/s]:      7.2    7.2    7.2     Common:       Tx frames:   409178       Tx bytes:    24554240       Rx frames:   409177       Rx bytes:    24554180       Lost frames: 0       Tx frame rate [1/s]:    123    123    125       Tx rate [KByte/s]:      7.2    7.2    7.2       Rx frame rate [1/s]:    123    123    125       Rx rate [KByte/s]:      7.2    7.2    7.2       Loss rate [1/s]:          0      0      0       Frame loss [%]:         0.0    0.0    0.0   Distributed clocks:     Reference clock:   Slave 0     DC reference time: 0     Application time:  0                        2000-01-01 00:00:00.000000000 roger@roger:~$ ethercat slaves 0  0:0  PREOP  +  EK1100 EtherCAT-Koppler (2A E-Bus) 1  0:1  PREOP  +  EL1008 8K. Dig. Eingang 24V, 3ms 2  0:2  PREOP  +  EL1008 8K. Dig. Eingang 24V, 3ms 3  0:3  PREOP  +  EL2008 8K. Dig. Ausgang 24V, 0.5A 4  0:4  PREOP  +  L8EC(COE) roger@roger:~$

lsmod | grep ec_generic sudo modprobe ec_generic lsmod | grep ec_generic it works again This is enough of a workaround for me. I can also do updates in the future with a clear conscience?