Hello,
If there is very bad and noisy signal, tvheadend completly dies. It stops to work, cpu load is 100% and it don't even respond to killall. The only way is kill it using kill -9 and run again. I have recent version compiled from source and it9135 as dvb-t tuner.
The log messages are something similar to this:
Warning: Transport error indicator, 300 duplicate log lines suppressed
Warning: Continuity counter error, 1934 duplicate log lines suppressed
... and after max 2 minutes of flooding with this, tvheadend is completly dead - not responding to anything (even killall and kill commands), not streaming anything, nothing is displayed on webui interface etc. Only "kill-9" can kill it in this case.
I think this is serious bug. because it makes everything very unstable if signal quality is wrong, also - any kind of temporary interferences can make tvheadend dead.