Ups, sorry
dXDj
I'm sad to say, that the problem isn't solved yet. It has been improved, but it's not fixed 
Since 7.95.2 IR is working but with a huge 'lagging'. I need to keep buttons on remote pressed for longer for to make it come through. Before it wasn't even recognized most of the time.
I tried switching to minisatip instead of vdr to no avail. As soon as the service is stopped (be it vdr.backend or minisatip) the remote starts working as it should. When starting either service, it stops responding/becomes laggy 
Kodi is responding as it should, as I am able to test with yatse as remote....
Any ideas where or what to check?
The above dmesg is with minisatip
PS as stated above, I'm still unable to blacklist rc_tt_1500 but I'm now able to modprobe - r the module without a kernel oops. This doesn't change anything, so it's not the built in ir from dvb receiver disturbing gpio, but it certainly has something to do with video (v4l2?).