Problem with tuning in HD Homerun

[mibsy]

I'm running Sagetv 6.2.10 on Windows XP Pro, Pentium 4 HT 3.6 GHz, and 2GB of memory. I'm running the latest HD Homerun software and firmware.

Everything is working extremely well, EXCEPT one of the tuners in my HD Homerun (tuner 0) always tunes my NBC affiliate to a music choice channel. ALL other channels tune correctly on tuner 0 - even the music choice channel. The second tuner tunes it correctly (tuner 1) as well as all the other channels work on it as well. The HD Homerun software tunes correctly for both tuners. I have also verifed the remapping to verify that it is set to the proper channel number from the HD Homerun software. This one thing is driving me nuts. Any ideas?

I have double and triple checked the mappings and they are correct in the GUI. Could they be wrong in a back-end file?

Any advice would be greatly appreciated.

Thanks

[MeInMaui]

Make sure that the second tuner is using the same epg line-up as the first tuner.

Aloha,
Mike

[mibsy]

Yep, they both use identical EPG's.

[omega]

I'm experiencing a similar problem with my HDHR, but with more than one channel, and on both tuners. I get about 20 total channels over QAM, and when I first set it up in SageTV, I made sure to click on "View" for each channel of them as I added it, and they all worked correctly at that time.

Recently about 5 or 6 of the channels either tune the wrong channel on the HDHR, or they won't even tune at all. The behavior is the same on both tuners - both either tune the same wrong channel, or won't tune the channel.

I double-checked my lineup in the Channel Editor (in HDHomeRun Setup) and it is still exactly how I configured it. I tested the source channels with the View buttons in the Channel Editor, and all the channels are still what they should be, so Comcast hasn't done any rearranging on me. I even looked at the two Silicondust[...]-ATSC.scn files in the SageTV folder and they both list the correct channel mappings.

What I did find that seemed weird, though, is there are also two Silicondust[...]-ATSC.frq files in the SageTV folder that only have about 5 channel mappings in them. I can't be sure, but I don't think those were there before. After my scheduled recordings end tonight, I'm going to try deleting those files and restarting the SageTV service.

[omega]

Ok... tried renaming the .frq files and restarting SageTV service... no go. Now It won't tune any of the channels, so apparently these files are needed.

Put the .frq files back, went back into HDHomeRun Setup and this time did a new scan. It appears Comcrap is messing with things again, because in addition to the channels I had configured before (which still work in VLC), it found a whole bunch more on higher frequencies. Checking these out, it seems that most of them are repeats of the same signals I had on lower frequencies , plus 2-3 new channels I didn't used to get in the clear . I'm guessing they're in the process of rearranging the lineup (groan).

So, I recreated my HDHomeRun Setup lineup based on the new channels, and then went to SageTV to reconfigure the channel mappings to the new lineup. Problem is, SageTV is still not tuning the correct channel based on the lineup mapping. Some channels work correctly, some tune a different channel on the HDHR, and some refuse to tune (just get a black video screen and SageTV UI responds very, very slowly or even stops responding).

Help! What is going on here?!

[Conejo]

Are you using the single x or the x-x-x method in the SageTV tuner remap of physical channels?

[omega]

Well, I think I've got it working again, for now anyway.

Here's what I did that seems to be working:
1) Did another scan with HDHomeRun Setup, and this time disabled all of the duplicate channels.
2) Went into SageTV and changed the EPG lineup for the HDHR tuners to a neighboring city that has the same lineup, so that it would clear out all the remapping I've been doing lately.
3) Let SageTV scan for available channels. It found all of the HDHR channels and put them in as 80-1, 80-2, etc. I left those all enabled and remapped their logical channel numbers to where they should be in Comcast's digital lineup.

I still experienced a problem clicking the "View" button in the channel setup screen - half the time it would either stay on the previous channel or lock up and I'd have to kill SageTV Client and restart it. But, once I had all the channels enabled in setup, I seem to be able to view them from the Guide just fine. Now the next test is whether today's football games end up tuning into the right channel.

Conejo, I was previously using the existing Comcast lineup without letting SageTV scan, and then remapping the physical channel to the single "x" number as it said in the Silicondust instructions. Now after letting SageTV do a scan, it has the channels mapped using the "x-x-x" method and seems to be working much better.

I just hope this keeps working now without any more messing around. What seems weird is that I had it working fine for about a week before I started having the tuning problems.

[Conejo]

Interesting. SiliconDust changed their setup instructions, instead of having SageTV autoscan the channels they're now having users set the channel remaps manually.

Several people have experienced tuning issues with the DBA drivers remapped to QAM channels and I've suggested they use the single x of the x-y-z setup method. Now it looks like SiliconDust tends to agree.

I'm sure they'll have it all worked out with the next update.

[mibsy]

Originally Posted by omega

Ok... tried renaming the .frq files and restarting SageTV service... no go. Now It won't tune any of the channels, so apparently these files are needed.

Help! What is going on here?!

Well, I did something similar (renamed the .scn and .frq files to something ending with a .old extension) and it fixed the problem I had with my local NBC affiliate not tuning correctly. I used the manual remap method mentioned on the HD Homerun web site. Unfortunately, I have another problem that is not tuning, but transcoding issue with all my MVP's. They will play audio, but not display any video for the HD channels. It works fine on the server, but my MVP's will not display anything other than a black or green screen. I tried deleting the clients directory and restarting the MVP's, but it didn't help. I'm getting closer, just can't get everything working at 100%. It did work a few days ago to the MVPs, but now I don't get anything on the MVPs.

Edit - added new information:

Ok, I've narrowed it down. Transcoding works if I use the SageTV default decoders for MPEG2, but when I use the NVidia Purevideo decoder that I purchased, I only get a black or green screen instead of HD transcoded video. Audio works fine. I thought Purevideo was the desired decoder?

[mibsy]

I hate to reply to my own post, but I still have on MVP that won't show the transcoded HD feeds. The one in my living room works, the one in my bedroom doesn't. Works fine for everything else... I have some ideas to try.