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Tivo HD Pixelation Troubleshooting

Discussion in 'TiVo Series3 HDTV DVRs' started by Chimpware, Aug 3, 2007.

  1. Aug 12, 2007 #121 of 1597
    Chimpware

    Chimpware New Member

    334
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    Jan 30, 2002
    There already is a poll, it just got buried in the posting lists, I will bump it.
     
  2. Aug 13, 2007 #122 of 1597
    Guy Kuo

    Guy Kuo New Member

    55
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    Feb 10, 1999
    Seattle, WA
    I've seen digital pixellation on my TiVo HD as well. It happens infrequently and is usually associated with rapid scene content changes. Blockiness occurs for a few frames causing square, light colored artifacts to replace areas of the image which are usually supposed to be small, bright image details. The pixellation can occur on analog channels as well as digital. So, I'm not so sure this is actually assocated purely with having two cablecards installed. Then again, having two active cablecards might do something to occasionally overwhelm data stream handling capacity somewhere in the HD TiVo

    Artifacts I see are an awful lot like a data dropout to an MPEG decoder, but I don't see the characteristic green or purple blocks. Instead it looks like a portion of the image is improperly reconstructed for a few frames. The problem hasn't been horrible in the short time I've used the unit, but it's certainly not something I would expect to be rectified for the device to gain a good reputation.
     
  3. Aug 13, 2007 #123 of 1597
    holligl

    holligl New Member

    47
    0
    Dec 28, 2004
    I am currently running with the only HD being an OTA antenna. Don't get any more pixelation than with the signal straight into the HDTV. (pretty infrequent)

    Comcast is scheduled out in a few weeks with cable cards. I hope it doesn't go down hill at that point, because right now it is pretty impressive compared to the old S2 hooked up to the HDTV.
     
  4. Aug 13, 2007 #124 of 1597
    ZeoTiVo

    ZeoTiVo I can't explain

    25,527
    0
    Jan 2, 2004
    the thing is that this issue is not so black and white as a logic glitch in a billing system. It could be both hardware and software related. It could be both Tivo and CC related, it would definitely be hard to say exactly where with so many places for a gremlin to set up housekeeping. There are just that many factors involved in bringing a clear picture to the screen. What is obvious from this thread though is that the pixellation happens when a cable card is introduced and is actively streaming a digital channel to be recorded
    the fact that TiVo says it is a known issue and is not actively looking for more data tells me they have replicated it in the lab. Replicating it in the lab and getting to the root cause are two very different things. For TiVo to give out current thinking and then come upon a twist in the root cause after that or else find a different issue would just horribly confuse the situation even more. The best thing TiVo can do is let us know it is a known issue(check). That they are working on it (check) and then deliver a code fix instead of a press release.

    so keep on adding data points here, never know when the right bit of info will make for an aha moment. However for Tivo to try and get a coherent dialog going with a large user base is just a useless exercise that will do neither side much good.
     
  5. Aug 13, 2007 #125 of 1597
    wizzy

    wizzy S1, (2) S2, TivoHD

    78
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    Nov 11, 2001
    Chicago, IL
    I've seen pixelation both with cable cards, and OTA only. Currently I'm configured for OTA only (my cable line got cut, waiting for comcast to come re-wire it), and I see pixelation on the tivo menus at times. Connected via component to a Samsung DLP.
     
  6. Aug 13, 2007 #126 of 1597
    Chimpware

    Chimpware New Member

    334
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    Jan 30, 2002
    Do you have cable cards installed in the Tivo HD currently?
     
  7. Aug 13, 2007 #127 of 1597
    randymac88

    randymac88 New Member

    78
    0
    Feb 29, 2004
    This is an interesting one...not sure if it's a problem or if its causing any issues, but when i go into the "Diagnostics" screen for the Cablecards, I get "Tuner 0", and it says it's associated with Cablecard 1. Then, I get "Tuner 1" and it is associated with Cablecard 2.

    Seems kind of logical, but not really. Anyone know anything about this, or if its something i should try / can correct?
     
  8. Aug 13, 2007 #128 of 1597
    mitomac

    mitomac New Member

    12
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    Aug 11, 2007
    No problem. That is just their internal labeling scheme -- card 1 is tuner 0 and card 2 is tuner 1. Imagine the look of horror if a cable tech had to find slot 0!

    mitomac
     
  9. Aug 13, 2007 #129 of 1597
    Dr_Zoidberg

    Dr_Zoidberg Member

    197
    0
    Jan 4, 2004
    Here's another report -

    I'm using Cablevision in NJ. I have my older S2 attached via an SA cable box. I have my TiVoHD just below it, and the box and TiVo HD unit share a split line. IThe TiVoHD has two SA cards installed, and is running 8.1.7b. The TV is a Sony 50", and only has component video. It probably doesn't matter, but I have high speed digital cable and get really high performance from it (up to 6Mbit download). I do not have reception issues on the Cable Box/S2. My Harmony 880 controls both TiVos properly, too :)

    I get pixelation about once a minute, no matter the channel (digital or not). Repeated play of pixelated portions of recordings or "live TV" will produce pixelation at the same time. I also get stuttering with no pixelation, on rare occasions. I do get some menu pixelation, but that seems to happen only when I'm switching from watching something to the main menu, and it does not happen when switching between menus. From that, I'm willing to believe it's a result of the video/signal, not some major glitch in the unit.

    The pixelation is irritating, but I'm willing to give TiVo some time to fix it.

    I'm also waiting for them to allow me to transfer my lifetime, but for now, I'm satisfied, and hope they patch this issue soon. I don't care if it's hardware or software, I just want it fixed. Bickering as to the source is rather pointless, however, it'll be better if it's software, since that's patchable without any extended downtime. If it's hardware, I expect TiVo to make good, one way or another. I don't care who solves it, I just want it solved.

    As a side note, one thing I do notice is that the audio output levels on the S2 are lower, but I noticed that when I was doing TTG transfers and conversions. At the very least, I will keep my S2 until TTG is available on the TiVoHD, but I'm digressing here...
     
  10. Aug 13, 2007 #130 of 1597
  11. Aug 14, 2007 #131 of 1597
    lrhorer

    lrhorer Active Member

    6,924
    0
    Aug 31, 2003
    San...
    The point is, many of these people are screaming they are going to dump the platform in 2 weeks if it isn't fixed. It is unreasonable to require a company to try to fix an issue of any sort inside 2 weeks. The people who want to send back their TiVo HD DVRs are free to do so, but they should not distribute hysteria by suggesting the manufacturer should fix it in 2 weeks, nor badmouth TiVo after the fact for not being able to fix it in 2 weeks, assuming some of the issues are in TiVo's lap in the first place.

    Of course, but that's not relevant to my point.

    'Absolutely correct. The Menu is generated internally.
     
  12. Aug 14, 2007 #132 of 1597
    Chimpware

    Chimpware New Member

    334
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    Jan 30, 2002
    Well again, you are off base, let's work back to front this time;

    1. Tivo has admitted to many on the phone, including me finally, that this is there issue and it is software related (I hope they are correct here) so it is "In their lap".
    2. No one is creating hysteria, people are just repsonding to a product that does not work properly. In most cases we don't care why, but it is helpful for piece of mind to know. I don't care what causes the problem personally, I paid for a wolring product and am paying a service fee to use it properly. It does not work properly, so either they fix it or it goes back. Simple as that.
    3. It is not badmouthing to accurately post about your experience with Tivo. If they look bad in those posts it is on them. They pushed a product to market with known issues IMHO. If that were not the case how did they magically push a fix for the slot 2 issue in 6 days, if software issues take as long to fix as you claim.

    So in the end again, this is a Tivo issue, they admit it, and if they don't fix it many people will return these defective systems within the 30 day period. I am hoping they fix it, I want to keep the untis I have, but I will not sit around with pixelation every 10 to 30 seconds on the screen after paying for the untis and paying a subscription fee. I will also continue to tell people about the issues if asked and encourage people not to purchase the system until this is remedied.
     
  13. Aug 14, 2007 #133 of 1597
    Globular

    Globular No time to hack

    201
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    Jun 9, 2004
    Groton, MA USA
    Here's a new symptom. Just this morning my screen pixelated, and the info screen popped up. My remote was sitting on the coffee table, untouched.

    Weird.

    How about an update TiVoPony?

    -Matt
     
  14. Aug 14, 2007 #134 of 1597
    rickfriele

    rickfriele New Member

    27
    0
    Aug 13, 2007
    Henderson, NV
    I have a TiVo HD with 2 cable cards through Cox connected via component and am getting pixelation on digital AND analog stations along with the TiVo Central screen intermittently.
     
  15. Aug 14, 2007 #135 of 1597
    TiVoDoughBoy

    TiVoDoughBoy New Member

    70
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    Nov 7, 2004
    Interesting that it's getting coverage outside our beloved forums, but sounds like they have it wrong, too, suggesting a couple of times in the article that it's just the SA cards.

    I believe it's pretty clear that it's both SA and Motorola cards and not limited to slot 2. Might have been worse in slot 2, but it's happening for slot 1 and for M-Cards (which only use slot 1 -- I can attest to that as it's my situation).
     
  16. Aug 14, 2007 #136 of 1597
    wizzy

    wizzy S1, (2) S2, TivoHD

    78
    0
    Nov 11, 2001
    Chicago, IL
    No, I had to physically eject them for the guided setup to work correctly. Even if I selected "antenna only", it wouldn't remove the cable channels until I removed the card and redid setup. Of course, it still knows that I once had a cable card, as it prompts me to put it back in after reboots.
     
  17. Aug 15, 2007 #137 of 1597
    Guy Kuo

    Guy Kuo New Member

    55
    0
    Feb 10, 1999
    Seattle, WA
    Has anyone else who upgraded their TiVo HD's hard drive to a different drive noticed that pixellation has diminished or gone away? I put in a 750 GB Western Digital (out of a MyBook external case) and I no longer see the pixellation artifacts. I didn't try any acoustic management settings on the new drive. This might suggest, that in my case at least, the original drive was having trouble keeping up with the data streams.

    Still too early to tell if this actually solves the problem here, but it is very promising after several pixellation free hours. Previously, I was seeing it a few times an hour.
     
  18. Aug 15, 2007 #138 of 1597
    gespears

    gespears Member

    387
    0
    Aug 10, 2007
    Phoenix
    I just wanted to add a data point. I'm really disappointed. I have:

    1. B software
    2. SA cable cards, Cox Phoenix
    3. 1080i Fixed through an HDMI cable
    4. Optical Sound to my Philips receiver
    4. Signal strength almost always at 100%
    5. SNR at 36

    I have pixelation on any channel. At worst several times a minute. At least several times in 5 minutes. The pixelation is bad enough but the audio dropping out is really annoying. It's really not watchable when it's really messing up.

    Called TIVO support and reported the problem, got a case number and told them I was going to have to send it back if they didn't get it fixed within the 30 day return period. They said they knew about the problem, were getting a ton of calls on it, and to call to extend my return period if necessary but didn't think it would be necessary.

    I hope he's right. I can't remember the last time I had ANY pixelation on my cable box. I can tell my wife is pissed about it but she knows how disappointed I am so she doesn't say anything. She almost said something when the audio kept cutting out during the Most Talented performances tonight.

    Gary
     
  19. Aug 15, 2007 #139 of 1597
    gespears

    gespears Member

    387
    0
    Aug 10, 2007
    Phoenix
    I'm going to upgrade to a WD 500 this weekend. Do you really think it helped? You didn't change any of the parameters for the drive? I don't even know how to change them. Do you?

    Thanks,

    Gary
     
  20. Aug 15, 2007 #140 of 1597

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