[mythtv-users] DVB-S2 scan fails (0.29)

[UB40D]

On 24 December 2017 at 09:56, Mike Bibbings <mike.bibbings at gmail.com> wrote:

> On 24/12/17 19:22, UB40D wrote:
>
> Meanwhile, reattempted "watch tv" (with recording in progress) and it
> failed, meaning it briefly said "please wait"  and then nothing happened.
> Several times. Really voodoo here. Once the recording finishes I'll restart
> frontend and backend from terminal windows to look at the logs again and
> try to nail it down.
>
> Anyway MAJOR PROGRESS since yesterday. Very many thanks to all in this
> thread.
>
>
> Sometimes LiveTV fails to tune to a channel when the starting channel has
> got out of step (if mythtv has trouble tuning it defaults to channel 3,
> which unless you have changed channel numbers using mythweb, or the channel
> editor will not exist in Freesat numbering from a channel scan).
>
> If you go into Program Guide from the main menu, use the up/down arrow
> keys to move to a channel and press menu key (default m) you then get a pop
> up with some entries amongst which is something like "watch this channel"
> just select this and it should tune to the channel, this will update the
> starting channel.
>


It looks like I'm not quite at the end of my troubles.
I came back to the box only to find "X Could not connect to master
backend". Damn. The recording was still in progress, though, almost over,
and all looked like it had worked so far.
I went into Program Guide from the main menu as per your instructions
(still with "could not connect to master backend") and it took several
minutes of "loading", during which ESC was unresponsive. I started writing
this reply during that time. A program guide grid has since appeared. I was
able to arrow-down to BBC One HD. I pressed m and nothing happened. I' ve
still got "X Could not connect to master backend" that comes and goes. It's
unclear to me how the backend (a process on the same machine) could not be
responding but still doing the recordings.

The recording of Planes must have finished by now so I may just reboot the
machine and see if it's any healthier. Anyway, as I was writing these
further commentsthe menu did eventually pop up, and its options are

record this
recording options >
programme details
jump to time >
reverse channel order
channel search

None of them seems to have very much to do with "watch this channel" so I'm
not too sure where to go from here. Let me see if I can exit gracefully. It
doesn't look like it' s responding to ESC but maybe it' s just that it
takes a couple of minutes to service keypresses... YES, that was that.
Managed to exit the frontend without crashes. Now stopping the backend with
 sudo systemctl stop mythtv-backend.service
which is taking a few minutes too.
OK, done.
Now looking at the end of /var/log/mythtv/mythbackend.log and it says...

Dec 24 10:45:43 sgrizzo mythbackend: mythbackend[5515]: E DVBRead
mpeg/mpegstreamdata.cpp:783 (ProcessPAT) MPEGStream[2](0x7f3588205450):
ProcessPAT: Program not found in PAT. Rescan your transports.
Dec 24 10:45:43 sgrizzo mythbackend: mythbackend[5515]: E DVBRead
mpeg/mpegstreamdata.cpp:399 (CreatePATSingleProgram)
MPEGStream[2](0x7f3588205450): Desired program #3001 not found in
PAT.#012#011#011#011Cannot create single program PAT.
Dec 24 10:45:52 sgrizzo mythbackend: mythbackend[5515]: E TVRecEvent
tv_rec.cpp:3988 (TuningSignalCheck) TVRec[2]: TuningSignalCheck:
SignalMonitor timed out
Dec 24 10:47:36 sgrizzo mythbackend: mythbackend[5515]: I TVRecEvent
tv_rec.cpp:3704 (TuningFrequency) TVRec[2]: TuningFrequency
Dec 24 10:47:48 sgrizzo mythbackend: mythbackend[5515]: E Commflag_11806
jobqueue.cpp:2368 (DoFlagCommercialsThread) JobQueue: Advert Detection
Errored: Planes recorded from channel 7941 at 2017-12-24T09:00:00Z (Failed
with exit status 140)
Dec 24 10:48:10 sgrizzo mythbackend: mythbackend[5515]: I TVRecEvent
tv_rec.cpp:3704 (TuningFrequency) TVRec[1]: TuningFrequency
Dec 24 10:48:12 sgrizzo mythbackend: mythbackend[5515]: E DVBRead
recorders/dtvsignalmonitor.cpp:322 (HandlePAT)
DTVSigMon[1](/dev/dvb/adapter0/frontend0): Program #52039 not found in
PAT!#012Program Association Section#012 PSIP tableID(0x0) length(77)
extension(0x832)#012      version(2) current(1) section(0)
last_section(0)#012      tsid(2098) programCount(17)#012  program
number     0 has PID 0x0010#012  program number 53520 has PID 0x0106#012
program number 53540 has PID 0x0103#012  program number 53560 has PID
0x0101#012  program number 53515 has PID 0x0105#012  program number 53525
has PID 0x0100#012  program number 53530 has PID 0x010f#012  program number
53558 has PID 0x0115#012  program number 53550 has PID 0x0113#012  program
number 53599 has PID 0x0108#012  program number 53598 has PID 0x0110#012
program number 53510 has PID 0x0109#012  program number 53505 has PID
0x0107#012  program number 53555 has PID 0x0111#012  program number 53565
has PID 0x0114#012  program number 53545 has PID 0x0112#012  program number
53535 has PID 0x010e
Dec 24 10:48:12 sgrizzo mythbackend: mythbackend[5515]: E DVBRead
mpeg/mpegstreamdata.cpp:783 (ProcessPAT) MPEGStream[1](0x7f359c1932d0):
ProcessPAT: Program not found in PAT. Rescan your transports.
Dec 24 10:48:12 sgrizzo mythbackend: mythbackend[5515]: E DVBRead
mpeg/mpegstreamdata.cpp:399 (CreatePATSingleProgram)
MPEGStream[1](0x7f359c1932d0): Desired program #52039 not found in
PAT.#012#011#011#011Cannot create single program PAT.
Dec 24 10:48:22 sgrizzo mythbackend: mythbackend[5515]: E TVRecEvent
tv_rec.cpp:3988 (TuningSignalCheck) TVRec[1]: TuningSignalCheck:
SignalMonitor timed out

....where again I can't make heads or tails of it but I sense a general
unhappiness ("timed out") as well as a repeated plea to "Rescan your
transports", whatever that means and however that's done.

Does this give meaningful hints to people smarter than me?

In the meantime I'll send off this email and reboot the box---always the
blunt weapon of choice against voodoo.
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