2015-02-23 13:44 GMT+01:00 Rudy Zijlstra <rudy@xxxxxxxxxxxxxxxxxxxxxxxxx>: > On 23-02-15 12:21, Honza Petrouš wrote: >> >> 2015-02-23 11:31 GMT+01:00 Rudy Zijlstra <rudy@xxxxxxxxxxxxxxxxxxxxxxxxx>: >>> >>> On 23-02-15 08:44, Honza Petrouš wrote: >>> >>> Hi Rudy. >>> >>> 2015-02-22 16:28 GMT+01:00 Rudy Zijlstra >>> <rudy@xxxxxxxxxxxxxxxxxxxxxxxxx>: >>>> >>>> Some more info >>>> >>>> On 21-02-15 22:30, Rudy Zijlstra wrote: >>>>> >>>>> Dears (Hans?) >>>>> >>>>> My setup, where the cable operator was using only irdeto, was working >>>>> good. Then the cable operator merged with another, and now the networks >>>>> are >>>>> being merged. As a result, the encryption has moved from irdeto only to >>>>> simulcyrpt with Irdeto and Nagra. >>>>> >>>>> Current status: >>>>> - when i put the CA card in a STB, it works >>>>> - when trying to record an encrypted channel from PC, it no longer >>>>> works. >>>> >>>> Recording system has 3 tuners. All equal, all with same permissions on >>>> the >>>> smartcard. On cards 0 and 2 does not work, but card 1 does work, on all >>>> channels tested. >>>> >>> Does it mean that descrambling is not working for you? If so, >>> how do you manage descrambling? By CI-CAM module >>> or by some "softcam" like oscam? >>> >>> Or do you record ENCRYPTED stream and decrypt the recordings >>> later on? >>> >>> >>> Each tuner has its own legal CI-CAM module. And yes, except for the >>> second >>> tuner descrambling no longer works >>> >> I'm not much familiar with MythTV, so I'm guessing from the mux setup >> changes, >> but did you check to descramble the same channel on different tuners? >> To eliminate >> the particular change inside one service only. >> >> Of course there can be also software issue in CI-CAM module itself >> (fail in parsing >> PMT CA descriptors etc). >> >> TBH, I think it must be application layer issue, not kernel one. >> > See above: > > Recording system has 3 tuners. All equal, all with same permissions on the > smartcard. On cards 0 and 2 does not work, but card 1 does work, on all > channels tested. > > additional finfo: i tested the same channel(s) on all 3 tuners. For now i > have re-configured mythtv to use only the second tuner for encrypted > channels. > This does reduce scheduling flexibility though. > > Would to understand what makes the difference, so i can ask the right > questions to MythTV developers. > > > As the decryption does work with 1 tuner, i see 2 options: > - depending on tuner id the default CA descriptor used is different, and > this selection is not expoerted on API level (kernel issue) > - application needs to select which CA to use (and currently does not do > this) > The kernel has no any possibility to break descrambling by CI-CAM as CI-CAM (usually/in more cases) is connected BEFORE TS input. The kernel only talk with CI-CAM by driver, but the message payload sent to the Ci-CAM is controlled by application. I think it must be MythTV issue. Please check if PMT is parsed correctly and the correct CAId is used (as already noted Tycho, Irdeto CAId is 06xx and Nagra is 18xx). BTW, you can check which CAId is supported by your smartcard from CI-CAM menu. /Honza -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
