[mythtv-users] HDhomerun antenna borked

Greg Woods greg at gregandeva.net
Tue Aug 17 14:21:24 UTC 2010


On Mon, 2010-08-16 at 09:13 -0400, Dan Wilga wrote:
> On 8/15/10 10:16 AM, Greg Woods wrote:
> > What I see now when I fire up live TV is that I never get a picture or
> > sound; it hangs displaying
> >
> > Signal XX% (TI__) No Lock

I am still having this issue on the antenna-connected HDHomerun tuner
despite my best efforts. I have double checked the following:

1) The tuner is set up correctly as far as I can tell. I don't see
anywhere that ATSC is set explicitly, but it is connected to the Antenna
video source, and that video source is set to us-bcast. If I go into the
channel scanner, it does show as Broadcast and Terrestrial (8-vsb).

2) hdhomerun_config_gui can readily find and lock the channels, but
pressing View results only in the Stop button being ungreyed, nothing
actually happens. (I just upgraded both the hdhomerun software and the
firmware to the 20100213 versions, and the View button doesn't work on
the QAM-connected tuner either although that tuner does work in Myth).
Scanning for channels in mythtv-setup fails to find any channels.

3) I am aware that the signal strength percentage doesn't mean much, but
this doesn't look like an antenna issue. I can find no cables near each
other, no neighbors that I know of have installed metal roofs, etc.
hdhomerun_config_gui can readily tune the channels.

4) The setup of this tuner simply does not work right. I go through
mythtv-setup to add the tuner, and it appears in the database twice:

select cardid,cardtype,videodevice,hostname from capturecard;
+--------+-----------+-----------------+-----------+
| cardid | cardtype  | videodevice     | hostname  |
+--------+-----------+-----------------+-----------+
|      1 | HDPVR     | /dev/video0     | confusion | 
|      2 | HDPVR     | /dev/video1     | confusion | 
|      3 | HDHOMERUN | 192.168.1.100-0 | confusion | 
|     12 | HDHOMERUN | 192.168.1.100-1 | confusion | 
|     13 | HDHOMERUN | 192.168.1.100-1 | confusion | 
+--------+-----------+-----------------+-----------+

It only shows up in mythtv-setup once. Deleting it through mythtv-setup
does not produce any errors on stdout/stderr, but it doesn't have any
effect. The only way to get rid of it is to delete it from the
capturecard and cardinput tables. Then it disappears from mythtv-setup.
Deleting all capture cards through mythtv-setup also has no apparent
effect. Attempting to delete all cards from cardinput and capturecard
and re-add them all results in both tuners from the hdhomerun being
duplicated. I think my database is hosed; aside from deleting them from
these two tables, what else has to be done to completely erase all old
capture card data? I know something is still there because the cardid
does not reset to 1 as it does if all capture cards are deleted through
mythtv-setup. Instead I get this:


mysql> select cardid,sourceid,inputname,externalcommand from cardinput;
+--------+----------+-----------+-----------------------------------------+
| cardid | sourceid | inputname | externalcommand
|
+--------+----------+-----------+-----------------------------------------+
|     14 |       14 | Component | /local/bin/6200ch -g
0x0023a3fffe547059 | 
|     15 |       14 | Component | /local/bin/6200ch -g
0x00152ffffeda33ac | 
|     16 |       10 | MPEG2TS   | NULL
| 
|     17 |       10 | MPEG2TS   |
| 
|     18 |       13 | MPEG2TS   | NULL
| 
|     19 |       13 | MPEG2TS   |
| 
+--------+----------+-----------+-----------------------------------------+

5) I have double checked that all mysql.txt and config.xml files have
identical settings.

Anything else I can do?

TIA,
--Greg





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