Hi Adriana, Am Dienstag, 19. Juli 2005 14:43 schrieben Sie: > We (deuromedia) have done the dvb support for itvmedia. We had the same > tuning problems on ARD for a long time. Somebody at itvmedia asked Andrew > de Quincey to take a look at this, but as far as I know, he didn't find a > solution yet. > > There are no modifications to the driver, we use the sources from kernel > 2.6.11. > > The "solving" of the tuning problem is actually this sequence: > - try FE_DISEQC_SEND_MASTER_CMD / FE_SET_FRONTEND ioctls about 6 times > each; - after every FE_SET_FRONTEND, read status 10 times; > Between every ioctls, usleep (50000) - this interval I found somewhere in > an old libdvb from Metzler brothers, IIRC. > > We had this problem most often on ARD (11836 MHz on astra), also sometimes > on ZDF.vision (11954), but strangely, never on RTL (12188). First tuning > operation after starting the machine was the most problematic (status 0x1f > on ard after ~40 read_status operations, if we were lucky). > We replaced the knc with a wintv nova, this one always reported a nice 0x1f > at the first fe_read_status. So definately it was a problem with the card, > not some external cause. At first, I have to thank you for this detailled information! That matches pretty good with my experience - I just had a talk to the technical director at KNC. He mentioned that it may be an agc-related problem. He'll provide me with some more specifications - may that'll help us fixing the problem. I'll keep the list posted. If anyone else has some further thoughts I'd like to hear them (c: Cheers, Julian
