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balthisar
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Posted: Thu Dec 15, 2005 8:32 pm |
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Joined: Thu Dec 15, 2005 8:15 pm
Posts: 46
Location:
Michigan
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Hi all,
While I'm waiting for my two PVR500's to come in, I've been trying to get my HD5000 to work. Trying, of course, means I've not had any luck...
I'm plugged into my basic cable line (Comcast), and during mythtv-setup, doing a channel scan adds five channels, e.g., WTVS-HD (561) and WDIV-HD (41). This is using the "cable" scan which gets me the QAM stations. So I'm assuming everything's okay up to this point and the card probably works. I have video sources and so on all set up, and I've also configured everything in the front end as well.
So here's the potentially stupid question: *must I* be connected to an HDTV of some sort to see the card output? On my 1080x800 monitor (max!) when I try to watch TV, the screen justs turns black for several seconds, and then MythTV either crashes or just returns to the main screen. Should I be able to see the signal on my monitor? If so, will it be oversized, scaled, panned, or just not work and do what I said it's doing? In the long run, this is just going to be my back end, and I don't have a HDTV yet for testing on. I just assumed I could scale down for testing, now.
Okay, assuming it's NOT a stupid question and that it SHOULD work on my monitor, what may be wrong? Should I try to connect to an old UHF antenna somewhere and avoid QAM? I'd hate to do that, since it looks like QAM works well enough to at least ID the stations...
THANKS.
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cesman
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Posted: Thu Dec 15, 2005 10:45 pm |
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Joined: Fri Sep 19, 2003 7:05 pm
Posts: 5088
Location:
Fontana, Ca
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You don't need an HDTV to view HD content. If MythTV is crashing, you need to investigate the MythTV logs.
_________________ cesman
When the source is open, the possibilities are endless!
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akulcsar
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Posted: Thu Dec 15, 2005 11:46 pm |
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Joined: Thu Dec 01, 2005 4:14 pm
Posts: 78
Location:
Ann Arbor, MI
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Hi, balthisar.
Just wanted to drop a note and say that I
- have Comcast
- have an HD-5000
- am able to tune QAM channels and display them on a remote frontend connected to a non-HD television
so it definitely works with R5A26. (Looks like you and I are in the same area, too, based on the channel numbers and station IDs ) If the FRONTEND is crashing, then your video card driver may not support the feed that you are getting from the backend (it will be pumping a 1920x1080 MPEG2 stream if you are tuned to an HD channel). If the BACKEND is crashing, then you may have set the initial channel to a bad channel (go back to mythtv-setup and change it under 4. Input Connections) or you may have a permissions problem.
If you are still stuck, post the relevant log (frontend or backend; relevant portions only, please) so that someone can help you further.
Good luck!
Last edited by akulcsar on Sat Dec 17, 2005 1:56 pm, edited 1 time in total.
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balthisar
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Posted: Fri Dec 16, 2005 6:47 am |
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Joined: Thu Dec 15, 2005 8:15 pm
Posts: 46
Location:
Michigan
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Thank you both!
Is there a proper mythfrontend.log somewhere? Searching here I was able to find that .xsession-errors had some log data, but obviously a frontend log would provide more data. Here's the fresh .xsession-errors from my attempt to "Watch TV" right now:
Code: 2005-12-16 07:24:35.940 Could not bind to UDP notify port: 6948 2005-12-16 07:24:40.953 taking too long to be allowed to read.. 2005-12-16 07:24:45.958 taking too long to be allowed to read.. 2005-12-16 07:24:50.962 taking too long to be allowed to read.. 2005-12-16 07:24:50.962 Took more than 10 seconds to be allowed to read, aborting. Couldn't read file: rbuf://127.0.0.1:6543/cache/cache/ringbuf1.nuv 2005-12-16 07:24:51.014 Changing from None to WatchingLiveTV 2005-12-16 07:24:51.014 Decoder not alive, and trying to play.. 2005-12-16 07:24:52.150 Changing from None to None 2005-12-16 07:24:52.182 RemoteFile::Read() failed in RingBuffer::safe_read().
So... it looks like it can't access the ringbuffer, which is obviously needed for live TV. Interesting to see that it's attempting to access it via IP rather than direct file access -- I supposed that's what'll make my frontend work later. Just in case, then, a quick check indicates that /cache/cache is owned by mythtv.mythtv. A quick search for the UDP bind error doesn't find anything on this site -- still, it's suspicious, and I'm guess somehow relevant, since it precedes the "remote" request for the cache. Here's the backend from the same period: Code: 2005-12-16 07:44:06.148 Changing from None to WatchingLiveTV 2005-12-16 07:44:06.177 DVB#0 Recorder: Card opened successfully (using PS mode). 2005-12-16 07:44:06.182 DVB#0 ERROR - No PIDS set, please correct your channel setup. 2005-12-16 07:44:07.196 DVB#0 WARNING - No data from card in 1 second. [...snip...] 2005-12-16 07:44:20.333 DVB#0 WARNING - No data from card in 1 second. 2005-12-16 07:44:21.233 Couldn't read data from the capture card in 15 seconds. Stopping. 2005-12-16 07:44:21.310 Changing from WatchingLiveTV to None 2005-12-16 07:44:21.341 DVB#0 WARNING - No data from card in 1 second. 2005-12-16 07:44:21.346 Closing DVB recorder
My channel setup? That suddenly shocks me, since I'd though it was okay. Maybe I screwed it up between last night and today as I continued to goof with it. Last night, for example, the backend didn't complain about PIDs as I did an experimental manual record. Here's a C&P'd extract from last night's backend.log where I attempted to blindly record for five minutes -- it looks okay, right? (I've not actually tried watching it yet to see if anything's there.) Code: 2005-12-15 22:10:02.946 Started recording "test (Manual Record)" on channel: 1004 on cardid: 1, sourceid 1 2005-12-15 22:10:02.958 DVB#0 WARNING - Symbol Rate setting (0) is out of range (min/max:10762000/10762000) 2005-12-15 22:10:03.824 DVB#0 DVB signal 0 | snr fee0 | ber 0 | unc ffff 2005-12-15 22:10:03.828 DVB#0 Status: LOCK. 2005-12-15 22:10:03.859 DVB#0 Multiplex Locked 2005-12-15 22:10:05.592 DVB#0 Successfully tuned to channel 21. 2005-12-15 22:10:05.673 Changing from None to RecordingOnly 2005-12-15 22:10:05.777 DVB#0 Recorder: Card opened successfully (using PS mode). 2005-12-15 22:10:05.806 DVB#0 Data read from DMX - This is for debugging with transform.c 2005-12-15 22:15:00.044 Finished recording test (Manual Record) on channel: 1004 2005-12-15 22:15:00.086 Changing from RecordingOnly to None 2005-12-15 22:15:00.086 Reschedule requested for id 0. 2005-12-15 22:15:00.097 Closing DVB recorder 2005-12-15 22:15:00.126 Scheduled 1 items in 0.0 = 0.02 match + 0.02 place 2005-12-15 22:15:37.319 Starting Commercial Flagging for "test (Manual Record)" recorded from channel 1004 at Thu Dec 15 22:10:00 2005. 2005-12-15 22:15:38.647 New DB connection, total: 1 2005-12-15 22:15:38.725 New DB connection, total: 2
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balthisar
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Posted: Fri Dec 16, 2005 11:19 am |
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Joined: Thu Dec 15, 2005 8:15 pm
Posts: 46
Location:
Michigan
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Well... a clean install with static IP addressing seems to have done the trick! Instead of using the loopback address and DHCP, I used a static address and used the static address in mythtv-setup, and I have a picture.
So... thanks for the pointers. I really made me focus and get to the problem. Sound is next!
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balthisar
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Posted: Fri Dec 16, 2005 12:05 pm |
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Joined: Thu Dec 15, 2005 8:15 pm
Posts: 46
Location:
Michigan
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Now I'm at risk of hijacking my own thread and going off topic, but I'm already here (plus akulcsar seems to be in my area and know the answer to this.
I've autodetected the following channel connected to my Comcast basic cable line using QAM:
Code: WJBK-DT -- 21 WDIV-HD -- 41 WXYZ-HD -- 71 WTVS-HD -- 561 WTVS-SD -- 562
According to Comcast, these channels don't exist at these channel numbers. But I'm not using an antenna and got them with a QAM search, so I'm satisfied that Comcast is proving them -- right? Now if I look at antennaweb.org, I get the following: Code: WJBK-DT 2.1 Detroit WDIV-DT 4.1 Detroit WXYZ-DT 7.1 Detroit WDWB-DT 20.1 Detroit WFUM-DT 28.1 Flint WADL-DT 39.1 Mt. Clemens WKBD-DT 50.1 Detroit WTVS-DT 56.1 Detroit WWJ-DT 62.1 Detroit
Hmmm... the subchannels are identical to channels above! Again, since these other channels weren't found, I'm still convinced I'm getting these via QAM over the cable, and that Comcast simply isn't providing all of them. I conjecture, then, that Comcast is just "being cool" and providing the QAM for people without set top boxes, and if I subscribed to digital cable WITH A BOX I'd not use the QAM channels... am I missing something here?
Thanks for your patience!
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cesman
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Posted: Fri Dec 16, 2005 4:12 pm |
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Joined: Fri Sep 19, 2003 7:05 pm
Posts: 5088
Location:
Fontana, Ca
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Don't hijack, create a new thread. You don't want me whipping out my Air Marshall issued handgun.
_________________ cesman
When the source is open, the possibilities are endless!
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balthisar
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Posted: Fri Dec 16, 2005 8:01 pm |
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Joined: Thu Dec 15, 2005 8:15 pm
Posts: 46
Location:
Michigan
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cesman wrote: Don't hijack, create a new thread. You don't want me whipping out my Air Marshall issued handgun.
Well, to avoid being pistol whipped, I've followed this up with another thread that explains how I rectified this disparity. It's righ here. I got my listings fixed, but I'm still curious as to what's going on...
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