is that generic for the FritzBox 6490 Cable ? only the ip has to get changed i guess ? (i would include a workaround where you just input your ip)
AFAIK, it's even generic for both FritzBox 6490 Cable and FritzWLAN Repeater DVB-C, but I don't have the repeater to test it. The SAT>IP server is also undocumented by AVM, I just had my information from here: AVM FRITZ!WLAN Repeater DVB-C - Tvheadend
Am i imagining this or is there a way for the TV to wake Kodi/Chromebox when i power on the tv so that i dont have to hit a key on my kodi remote to bring it out of Suspend mode?
Yes, it's possible to wake devices with CEC in both directions. The Pulse Eight adapter will do this through USB when your TV sends a wake up signal.
Currently I have added/changed the following in my tvheadend42.start:
TVH_ARGS_EXTRA="--satip_xml http://192.168.178.254:49000/satipdesc.xml"
# debug commandline
if [ "$DEBUG_LOG" = "true" ]; then
TVHEADEND_ARG="-B -C -u root -g video -c $ADDON_HOME -l ${DEBUG_LOG_PATH} --trace $DEBUG_LOG_ARG $TVH_ARGS_EXTRA"
else
TVHEADEND_ARG="-B -C -u root -g video -c $ADDON_HOME $TVH_ARGS_EXTRA"
fiI hope it's okay to ask for feature requests here or if I should create a separate topic. But anyways, here's the request 
Would it be possible to add the option to somehow define extra parameters for tvheadend, either through addon settings or at least an environment variable? Background is: I have a FritzBox 6490 Cable, that has a hidden sat>ip server built in. It doesn't announce itself on the network, so I have to add --satip-server="..." to the tvheadend parameters, so tvheadend can use it. Currently I'm adding the parameter to the tvheadend42.start script every time the tvheadend addon gets updated, which isn't very comfortable obviously
I had a similar problem with the Pusle Eight CEC adapter and my NUC (no signal). The problem was, that at the point where the NUC tries to negotiate with the TV through HDMI, the CEC adapter didn't have power through USB yet, so the negotiation failed and the TV showed "no signal". The resolution was to not deactivate power on USB ports while the NUC was off, so the CEC adapter is already powered when the NUC is startet.
Same issue on 7.95.1 for me with Zotac IR remote in combination with NUC built in IR receiver. Worked fine on previous version (7.90.010).
service.tvheadend42
could you test if 1933 also work - just to be sure
Works fine 
Just wanted to give a heads up. tvheadend 4.1.1928 from the repo didn't work for me either (Generic x86_64, Sundtek DVB-C adapter). My adapter is found but it seems to be stuck when trying to tune (can't see anything related in the trace log). The 4.1.1931 test build and the 4.0 build from the repo work fine.