Hi, Hermann hermann pitton schrieb: > Am Freitag, den 11.04.2008, 00:08 +0200 schrieb Hartmut Hackmann: >> HI, Tim >> >> timf schrieb: >>> Hi Hartmut, >>> OK, found some more spare time, but very, very frustrated! >>> >>> 1) Tried ubuntu 7.04, 7.10, 8.04 >>> Tried with just modules that exist in kernel (no v4l-dvb) >>> Tried v4l-dvb from June 2007 and tried current v4l-dvb >>> Tried with/without Hartmut patch - changeset 7376 49ba58715fe0 >>> Tried with .gpio_config = TDA10046_GP11_I, or .gpio_config = >>> TDA10046_GP01_I, >>> Tried using configs in saa7134-dvb.c matching tiger, tiger_s, >>> pinnacle 310i, twinhan 3056 >>> >>> # Australia / Perth (Roleystone transmitter) >>> # T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy >>> # SBS >>> T 704500000 7MHz 2/3 NONE QAM64 8k 1/8 NONE >>> # ABC >>> T 725500000 7MHz 3/4 NONE QAM64 8k 1/16 NONE >>> # Seven >>> T 746500000 7MHz 2/3 NONE QAM64 8k 1/16 NONE >>> # Nine >>> T 767500000 7MHz 3/4 NONE QAM64 8k 1/16 NONE >>> # Ten >>> T 788500000 7MHz 3/4 NONE QAM64 8k 1/16 NONE >>> >>> 2) I have these saa7134 cards: >>> - pinnacle 310i >>> - kworld 210 >>> >>> This cx88 card: >>> - dvico DVB-T Pro hybrid (analog tv not work) >>> >>> - problem only occurs with kworld 210 in linux (works fine in WinXP) >>> >>> 3) In WinXP, all channels, both analog tv and dvb-t found >>> >>> 4) In linux, if start dvb-t first, never scans SBS - dmesg1 >>> >>> 5) In linux, if start analog tv first, stop, then start dvb-t, scan >>> finds SBS - dmesg2 >>> >> a) The pinnacle 310i finds everything? >> It has the same chipset, but an almost perfectly handled tuner chip... >> This means that your initial config file is ok... >> b) Does this mean that in case 4, all other channels are found? >> c) Case 5: This finds everything? >> d) What happens if you use the scan data of the pinnacle card? >> Does it tune SBS? Does it just take more time to stabilize? >> This can be understood. >> e) Just to be sure: did you clarify the open point with .antenna_switch >> (i think so) >> f) the kernel logs are as expected. >> <snip> >> >> >>> 6) Herman mentioned something called a "mode-switch" in the archives, >>> but not any description. >> I guess he meant the switching between analog, radio and dvb-t. This is the >> GPIO handling and card depending. > > Tim must have it from when I mentioned the special case of card=87 and > 94. > >>> I tried to find some data sheets for tda8275 tda8290 but only found the >>> publicity pdf file from Phillips, >>> so at least I can see they go together, so I presume this "mode-switch" >>> is coded into those modules. >>> But those modules work for all other cards, so now I'm lost again. >>> >>> What else should I try? >>> >> If my assumptions above are wrong, there is one other chance: >> Recently i saw another card that does the (unusual) mode switching >> like card 87. So to be sure, you might try to force this card type (be >> aware of the antenna inputs, if in doubt, try both. >> >> Best regards >> Hartmut >> > > For the Medion8800 Quad and CTX948 also showing this issue, needs to > tune analog first to have good recepton on DVB-T, they are a little > weaker on analog than other cards, but after that on DVB-T, they are as > good than known good others. > > Cheers, > Hermann > Is this problem still there with the recent v4l-dvb code? I found a problem with the GPIO initialization and fixed this in patch 49ba58715fe0 3 weeks ago (The gpiomask was not set until analog tuning occured). Best regards Hartmut _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
