Hi I found the following in the journal, a tuner timeout. As I said, with kernel linux-image-5.16.0-6-amd64 everything works. With linux-image-5.17.0-1-amd64 it doesn't work anymore, not a single program.
[...] Apr 22 14:07:01 vdrbox vdr[2034]: [2419] frontend 0/0 timed out while tuning to channel 2 (Das Erste HD), tp 266 Apr 22 14:07:03 vdrbox vdr[2034]: [2034] [xine..put] OSD bandwidth: 1151608 bytes/s (8996 kbit/s) Apr 22 14:07:11 vdrbox vdr[2034]: [2034] [xine..put] OSD bandwidth: 9588272 bytes/s (74908 kbit/s) Apr 22 14:07:12 vdrbox vdr[2034]: [2034] [xine..put] OSD bandwidth: 5246688 bytes/s (40989 kbit/s) Apr 22 14:07:13 vdrbox vdr[2034]: [2034] [xine..put] OSD bandwidth: 10374720 bytes/s (81052 kbit/s) Apr 22 14:07:15 vdrbox vdr[2034]: [2034] switching to channel 16 C-61442-7-10355 (hr-Fernsehen HD) Apr 22 14:07:15 vdrbox vdr[2034]: [3858] osdteletext-receiver thread ended (pid=2034, tid=3858) Apr 22 14:07:15 vdrbox vdr[2034]: [2034] osdteletext: cTxtReceiver stopped after 23 sec: cTelePage received on DVB 0 for channel 2 'Das Erste HD' ID=C-41985-1051-11100: 0 (0,000/sec) Apr 22 14:07:15 vdrbox vdr[2034]: [2034] buffer stats: 0 (0%) used Apr 22 14:07:15 vdrbox vdr[2034]: [3859] device 1 TS buffer thread ended (pid=2034, tid=3859) Apr 22 14:07:15 vdrbox vdr[2034]: [3857] buffer stats: 0 (0%) used Apr 22 14:07:15 vdrbox vdr[2034]: [3857] device 1 receiver thread ended (pid=2034, tid=3857) Apr 22 14:07:15 vdrbox vdr[2034]: [2034] osdteletext: cTxtReceiver started on DVB 0 for channel 16 'hr-Fernsehen HD' ID=C-61442-7-10355 storeTopText=true LiveView=true Apr 22 14:07:15 vdrbox vdr[2034]: [3939] device 1 receiver thread started (pid=2034, tid=3939, prio=high) Apr 22 14:07:15 vdrbox vdr[2034]: [2034] creating directory /var/cache/vdr/vtx/C-61442-7-10355 Apr 22 14:07:15 vdrbox vdr[2034]: [3940] device 1 TS buffer thread started (pid=2034, tid=3940, prio=high) Apr 22 14:07:15 vdrbox vdr[2034]: [3941] osdteletext-receiver thread started (pid=2034, tid=3941, prio=low) Apr 22 14:07:15 vdrbox vdr[2034]: [2034] [xine..put] OSD bandwidth: 2623344 bytes/s (20494 kbit/s) Apr 22 14:07:18 vdrbox vdr[2034]: [2034] [xine..put] OSD bandwidth: 767792 bytes/s (5998 kbit/s) Apr 22 14:07:24 vdrbox vdr[2034]: [2419] frontend 0/0 timed out while tuning to channel 16 (hr-Fernsehen HD), tp 354 [...] ...