Hello Rumen,
I have tested what you talk about.
I had 2 rules files in the folder "/etc/udev/rules.d"
They were :
60-ssd-sheduler.rules
99-meadedsi.rules
I remove them, reboot, lauch kstars and indi in local mode : the same as before : EFW not recognized
I copy/paste all the files from /lib/... to /etc/... reboot lauch kstars, indi in local mode : the same as before : EFW not recognized
Moreover I have the rule you talk about at the end of the 99-asi.rules file.
KERNEL=="hidraw*", ATTRS{idVendor}=="03c3", ATTRS{idProduct}=="1f01", GROUP="users", MODE="0666"
As Klaus have good result using ubuntu, i'll try to install ubuntu and not kubuntu on one of my computer (i have a free hard drive somhere ).
I don't know when i will be able to do it, I miss time.
Next week i go for one week in the professionnal observatory "PIC DU MIDI" in the south of France.
If the sky is clear i will be realy busy I hope il will be so.