Tomas Kral

@Spiro Many thanks so far, will use 4x1N5819 -->Please by careful with the diodes for the XM1541 cable, use only recommended ones could be something wrong with my deb setup, as /sbin is not searched $ /sbin/modprobe cbm modprobe: ERROR: could not insert 'cbm': Operation not permitted $ id ....100(users),... $ cat /etc/udev/rules.d/45-opencbm-xa1541.rules ACTION!="add", GOTO="opencbm_plugin_xa1541_rules_end" # xa1541/xm1541 parallel port driver KERNEL=="cbm", GROUP="users", MODE="0664" LABEL="opencbm_plugin_xa1541_rules_end"...

by running /sbin/depmod manually we got entries in 4.19.0-8-686-pae$ grep cbm modules.alias alias char-major-10-177 cbm alias opencbm cbm and 4.19.0-8-686-pae$ grep cbm modules.dep kernel/drivers/char/cbm.ko: kernel/drivers/parport/parport.ko

$ find /lib/ -iname cbm.ko /lib/modules/4.19.0-8-686-pae/kernel/drivers/char/cbm.ko /sbin/depmod on the system, so are incmod, modrobe depmod was not run during install as it needs be given /sbin path explicitly as system binary probably ... see above modprobe looks inside /lib/modules/4.19.0-8-686-pae/ by default

$ find /lib/ -iname cbm.ko /lib/modules/4.19.0-8-686-pae/kernel/drivers/char/cbm.ko /sbin/depmod on the system, so are incmod, modrobe depmod was not run during install as it needs be given /sbin path explicitly as system binary ... see above modprobe looks inside /lib/modules/4.19.0-8-686-pae/ by default

$ find /lib/ -iname cbm.ko /lib/modules/4.19.0-8-686-pae/kernel/drivers/char/cbm.ko /sbin/depmod on the so are incmod, modrobe depmod was not run during install as it needs be given /sbin path explicitly as system binary ... see above modprobe looks inside /lib/modules/4.19.0-8-686-pae/ by default

ii linux-headers-4.19.0-13-686-pae 4.19.160-2 ii linux-headers-4.19.0-8-686-pae 4.19.98-1+deb10u1 there was header mismatch Apologies for the confusion make -f LINUX/Makefile install install-plugin-xa1541 ... install -m 644 [ -f cbm.ko ] && echo cbm.ko || echo cbm.o /lib/modules/4.19.0-8-686-pae/kernel/drivers/char install -d -m 755 /etc/udev/rules.d/ install -m 644 45-opencbm-xa1541.rules /etc/udev/rules.d/ ... depmod -a make[1]: depmod: Command not found make[1]: [LINUX/Makefile:36: install] Error...

ii linux-headers-4.19.0-13-686-pae 4.19.160-2 ii linux-headers-4.19.0-8-686-pae 4.19.98-1+deb10u1 there was header mismatch Apologies for the confusion make -f LINUX/Makefile install install-plugin-xa1541 ... install -m 644 [ -f cbm.ko ] && echo cbm.ko || echo cbm.o /lib/modules/4.19.0-8-686-pae/kernel/drivers/char install -d -m 755 /etc/udev/rules.d/ install -m 644 45-opencbm-xa1541.rules /etc/udev/rules.d/ ... depmod -a make[1]: depmod: Command not found make[1]: [LINUX/Makefile:36: install] Error...

ii linux-headers-4.19.0-13-686-pae 4.19.160-2