Am 13.05.2012 16:02, schrieb Klaus Schmidinger:
On 12.05.2012 14:26, Midas wrote:
Hi,
to pick out one of the problems i am currently experiencing with lnb sharing i am starting a new thread. With device bonding or same cable usage (vdr 1.7.27 / 21 resp.) set, vdr absolutely fails to tune to any satellite channel after a restart. The only chance to regain tuning is to set up the devices individually, then switch to some channel, then switch between devices via femon and then set up back to lnb sharing /device bonding. This is not reliable and it may be necessary to repeat the steps until vdr finally works as expected. Afterwards there seem to be at least no serious problems with the setup and vdr keeps tuning as expected (yet maybe from time to time it looses live pic when switching polarization on timer start).
Adapters (with indices set by module params): MSI TV@nywhere Satellite II PCI (Mantis / stb0899) adapter_nr=0 Technisat Skystar HD PCI (TT S3200 clone / stb0899) adapter_nr=1 Hauppauge WinTV Nova T-Stick (mt2060) adapter_nr=2
Notes: -This is a Diseqc setup. -The MSI card replaces my old Twinhan VP1020 SD DVBS device. In the old setup i had lnb sharing running for months but it turned out to be necessary to patch the Twinhan driver preventing it from sending any voltage signal, to achieve reliable switching between V and H.
Conclusion: Something is wrong in how vdr administrates / sets up the master device (on restart).
I tried to reproduce your setup here with
- 2 budget DVB-S2 cards
- TT S2-6400 as primary device, forcing it to always use transfer mode from devices 3 and 4 in order to mimic the behavior of your software
device
- devices 3 and 4 (the two budget cards) bonded and connected to a common sat cable
I tuned to a channel with horizontal polarization and restarted VDR, and it tuned to that channel again without problems. Same with a vertically polarized channel.
Conclusion: Something is wrong with your system ("it turned out to be necessary to patch the Twinhan driver preventing it from sending any voltage signal, to achieve reliable switching between V and H" seems to hint in that direction ;-).
Klaus
Nice work Klaus, thanx a lot. I didn't want to exclude something is borked in my setup though i do not have any idea at all what is going wrong. After your test i guess i am finally lost. Right now i am doing some research on the dvb cards drivers. As the issue appears with the old Twinhan and the new Mantis as well i switched from blaming the Twinhan driver to focus the S3200 driver now. Though i am not familar with the DVB API at all...
Maybe someone else might contribute, especially Lars who reported similar issues in the big thread few days ago.
I will report anything new.
greets
Michael