[mythtv-users] Channel scan doesn't work

[schlimbo at gmx.de]

Hi,
I am currently trying to switch from DVB-T to DVB-S. I installed a brand-new mythbuntu (with mythtv-0.25). It finds my DD cine s2 fine; I can't see any issues with dmesg, all looks good. However, neither the scan in mythtv not the command-line scans work. 

I am using a quatro-lnb attached to a 5/8 multiswitch, telling Mythtv each tuner is attached to a LNB.

Using ZDF (for Astra) 11954000/hor/27500000 in mythtv-setup shows "no lock", signal strength 80%, signal/noise 74% for a while and then quits scanning without finding anything and reports a timeout.

The scan tool shows the following:

myth at mythserver:~$ sudo scan /usr/share/dvb/dvb-s/Astra-19.2E 
scanning /usr/share/dvb/dvb-s/Astra-19.2E
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
initial transponder 12551500 V 22000000 5
>>> tune to: 12551:v:0:22000
DVB-S IF freq is 1951500
WARNING: >>> tuning failed!!!
>>> tune to: 12551:v:0:22000 (tuning failed)
DVB-S IF freq is 1951500
WARNING: >>> tuning failed!!!
ERROR: initial tuning failed
dumping lists (0 services)
Done.

Any idea, suggestions?

frank