[ATrpms-users] Mythtv black screen in LiveTV mode with dvb-t and saa7134 installed

[John Pilkington]

Hi Axel

I sent this on 7th Sept and since then mythtv (ATrpms) has been in flux, 
  so I thought an update might be appropriate.

The DVB-T system is working well under today's MythTV (0.20-135.fc5.at); 
this includes LiveTV and the off-air program guide.  Initial tuning to 
all multiplexes was not automatic; only 4 were found out of 6.  I 
thought this might be because I receive a local relay, but it may be 
device specific, because I also get error messages every few seconds 
from DVBRec (Could not open demux device) while recording) and it seems 
that a patch for this is in the pipeline   (MythTV Changeset 10946)

> I recently added a Freecom USB dvb-t device to my FC5 system.  I'm in 
> the UK.  A Medion saa7134 is still fitted.  

The saa7134 still gives a black screen and no recordings.

> But Myth LiveTV gives silence and a black screen.  Mythbackend reports
> 
> TVRec(1): Changing from None to WatchingLiveTV
> VIDIOCGMBUF:: Invalid argument
> 
> and the frontend times out waiting for the recorder to start.
> 
> These are the same symptoms that I reported on 29 July.  They went away 
> when, at Axel's prompt, I uninstalled v4l and the v4l-kmdl.  The analog 
> system continued to work then, but the kmdl contains most of the dvb 
> stuff and now I want that.
> 
> Do I need to disable the analog system?  I would prefer not to, if only 
> because it offers an input for my VCR 'archive'.
> 
> Thanks in advance for any help,
> 
And in real-time for the repo and the hard work!

> John Pilkington