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No muxes detect any signal

Added by Anonymous almost 9 years ago

I had Tvheadend server working on a Raspberry Pi 2 running OpenElec with what appeared to be a customized version of Tvheadend; at least the GUI looked like V4, but identified as V0. The tuner is a USB Hauppauge 950Q. The Pi is headless, so OpenElec is not the best fit; also, I would like to load other packages that can't be done in OpenElec.

I noticed now that the bintray repository shows that the Raspbian Jessie is supported by the latest Tvheadend. I did a clean Raspbian Jessie install on a blank SD card, and installed Tvheadend - nothing else yet.

The web GUI (:9981) shows the 950Q on the [Configuration/DVB Inputs/TV Adapters] tab, and its ATSC tuner is enabled. I defined a network with pre-defined muxes for ATSC center frequencies. Basically, I set it up the same way as I had done with the OpenElec version that worked AOK.

I'm having no success with this new setup. The [Configuration/DVB Inputs/Network] tab shows 68 muxes and scan Q length 68; the scan Q number does not decrease. The [.../Muxes] tab shows all the channels status as PEND, no ACTIVE, no IDLE. Meanwhile the system log shows attempts to tune the frequencies....

2016-01-10 19:34:14.000 subscription: 0120: "scan" subscribing to mux "485.028MHz", weight: 2, adapter: "Auvitek AU8522 QAM/8VSB Frontend : ATSC #0", network: "Ottawa-OTA", service: "Raw PID Subscription"
2016-01-10 19:34:19.000 mpegts: 485.028MHz in Ottawa-OTA - scan no data, failed
2016-01-10 19:34:19.000 subscription: 0120: "scan" unsubscribing__

It appears that something very basic is not working, but I don't know what else I should be looking for. Is it a problem with the Jessie driver for the 950Q, or something in Tvheadend - perhaps I didn't configure something right.

Any advice on what I should be looking at?

Thanks.


Replies (2)

RE: No muxes detect any signal - Added by Anonymous almost 9 years ago

Thanks very much for the link, but in my case, all the muxes were already set to VSB/8 by default; I didn't change them. Maybe because I created the network with pre-defined muxes.... "United States: us-ATSC-center-frequencies-8VSB" ??.

What I find odd is that there appears to be a scan of channel frequencies going on in the background, as I showed in the system log, but the scan Q length in the Network tab does not change. I would expect the status of each channel to go from PEND to ACTIVE to IDLE and a result of OK or FAIL. It has been hours since I last clicked "Force Scan", and not a single channel has changed from its PEND state.

I was wondering if I might have done the setup steps wrong...

1. I enabled the TV Adapter.
2. I went to the Network tab and created a network from pre-defined muxes. Network Discovery is checked, Skip Initial Scan is not.
3. I went back to the TV Adapter tab and edited the parameters to select the network that I just created.

I remember reading something about doing the setup steps in a particular order, but not sure where I read that.

The Tvheadend runs as user=hts group=video, the adapter is user=root group=video. This shouldn't be a problem, no?

Is there anywhere else that I should be looking?

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