serarching muxes failed - solved

I'm using Tvheadend 4.2.8-4~g9f7ab68 on intel-nuc i3-7100 with ubuntu linux 16.04.03 , Kernel 4.4.0-128
The package is from the stable Xenial

My adapter is USB-sky DVBS2 S960

Installation works well. The adapter and network are defined. But no muxes found. I di'nt see anny error messages.

I have another Installation (libreelec and the same adapter) works properly.

How i can debugg the oroblem?

I got the fellowing messages:

mpegts: 11362H in DVB-S Network - tuning on Montage Technology M88DS3103 #0 : DVB-S #0

diseqc: failed to set voltage (e=Die Ressource ist zur Zeit nicht verfügbar)

The box is ok (i changed with the other one). Signal should be also ok. I worked on this connecor a few days ago.
<<

I found in an other post the problem is in kernel > 4.10

It was much more easier. I din't copy the firmware file to /lib/firmware.
Now it works.