Opened 13 years ago

Closed 13 years ago

Last modified 13 years ago

#3071 closed defect (fixed)

Only one mux gets tuned on system that used to work

Reported by: ikke@… Owned by: Janne Grunau
Priority: minor Milestone: 0.21
Component: dvb Version: head
Severity: high Keywords:
Cc: Ticket locked: no

Description

Hello,

mythtv is not capable of tuning channels anymore on my system. HW has not changed and I have been using mythtv for a couple of years on this HW. The channel editor does not show any signal/noise ratio while tuning, and it puts out a lot of errors like "Found Channel but it doesn't match existing tsid. You may want to delete existing chann...". I can't say when this has broken, mythtv has been running so nicely for long that I've never needed to re-tune channels.

It is able to find one mux though. And the channels on it. It is the mux number 3 on our cable provider's table here: http://dvb.swelcom.fi/cable.php. Too bad the normal channels I watch are not on that mux.

Other side effect here is that current trunk trashes my dtv_multiplex table. After two scans I now have 603 entries there, where as .20 from ubuntu repos creates only the needed 20+ muxes. Few days ago my dtv_multiplex table had about 32k entries!

Please tell me what info I can provide more from my system to help clearing this one out. I am willing to debug if needed (and told howto... :) )

This same happens on up-to-date ubuntu 6.10's latest mythtv packages and trunk version of today, week old and few weeks old. And I have nuked my existing mysql mythconverg database before trying different versions. My HW is two Terratec Cinergy 1200-C cards and I am able to watch TV with old version of my mythconverg database from backups, and with xine and VDR. Also dvb "scan" utility can produce a channels.conf file. Mythtv just can't. So HW should be ok.

I will attach a complete log of standard output of mythtv-setup, and my mux table after trying to tune. This is taken after I nuked mythconverg database, and did fresh install of todays trunk (Revision: 12770).

Attachments (2)

tune-fail.txt (10.3 KB) - added by ikke@… 13 years ago.
mythtv-setup std output
dtv_multiplex.txt (69.9 KB) - added by ikke@… 13 years ago.
dtv_multiplex with bogus entries, only first 20+ are real

Download all attachments as: .zip

Change History (8)

Changed 13 years ago by ikke@…

Attachment: tune-fail.txt added

mythtv-setup std output

Changed 13 years ago by ikke@…

Attachment: dtv_multiplex.txt added

dtv_multiplex with bogus entries, only first 20+ are real

comment:1 Changed 13 years ago by ikke@…

one more thing I forgot to tell...

For some reason I can't even get to search channels until I set QAM from auto to 128 and FEC from auto to none. After doing one scan with that I can do full scan of all transports, but never get signal/noise ratio other than 0. With ubuntu repo version of mythtv (0.20-0.2ubuntu2) signal/noise actually always shows something. Doesn't tune any better though.

comment:2 Changed 13 years ago by ikke@…

Today I tried the latest stable kernel 2.6.20 from kernel.org. Compiled and installed it, mythtv doesn't work any better with it.

comment:3 Changed 13 years ago by danielk

Owner: changed from danielk to Janne Grunau

Janne, any idea how an invalid inversion paramater could get inserted into the DB?

comment:4 in reply to:  3 Changed 13 years ago by Janne Grunau

Milestone: unknown0.21

Replying to danielk:

Janne, any idea how an invalid inversion paramater could get inserted into the DB?

Inversion = NULL isn't invalid, I have that too. But networkid = NULL is broken.

comment:5 Changed 13 years ago by Janne Grunau

Resolution: fixed
Status: newclosed

fixed in [12799]

comment:6 Changed 13 years ago by ikke@…

Thanks a lot! Immediately fetched latest trunk and gave it a spin. Works now!

Still QAM needs to be set from auto to 128 for the first channel scan. Otherwise it doesn't start to scan. FEC doesn't make difference anymore. Also signal/noice ratio stays zero while scanning, but signal strength is about 44% always.

Now I'll get back restoring my old database and retune the channels. Great!

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