On Mon, Mar 30, 2009 at 5:37 PM, Dave Johansen <davejohansen@xxxxxxxxx> wrote: > I am trying to get a MythTV setup working with a DViCO FusionHDTV7 > Dual Express using Mythbuntu 8.10 and I have been able to generate a > channels.conf file using the latest v4l-dvb source code and the scan > utility that comes with the dvb-utils in Mythbuntu (the dvbscan > utility in latest dvb-apps source code give me the error "Unable to > query frontend status"). I am also able to watch channels using > mplayer, but the the problem is that MythTV does not identify any > channels. I am able to watch channels using MythTV, but I have to > manually enter the channel data since the tuning is not working. > > The belief is that the signal strength and SNR output must be > incorrect and that is causing the problem with MythTV. I would like to > help get this fixed, so others don't have the problems that I have run > into, so what can I do to help get the signal strength and SNR outputs > working? > > If it's helpful, I have attached an example output using azap with one > of the channels that I can watch with mplayer: > > using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0' > tuning to 503028615 Hz > video pid 0x0011, audio pid 0x0014 > status 01 | signal e000 | snr e450 | ber 00000000 | unc 00000000 | > status 1f | signal 00ff | snr 00ff | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal 00ff | snr 00ff | ber 00000ab7 | unc 00000ab7 | FE_HAS_LOCK > status 1f | signal 00fa | snr 00fa | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal 00fa | snr 00fa | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal 00fa | snr 00fa | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal 00fa | snr 00fa | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal 00fa | snr 00fa | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal 00fa | snr 00fa | ber 00000000 | unc 00000000 | FE_HAS_LOCK > status 1f | signal 00fa | snr 00fa | ber 00000000 | unc 00000000 | FE_HAS_LOCK > > Thanks, > Dave Hello Dave, There has been an ongoing discussion about the representation of SNR and strength to applications such as MythTV. Currently it is very inconsistent across drivers. To my knowledge, MythTV does not rely on either of these fields during its scanning. It relies entirely on the FE_HAS_LOCK to make it's determination. You should probably see what additional logging capabilities are available in MythTV. Also, you might want to see if you can change the lock timeout in your application, as some applications may have the interval set to a value too short, which results in it timing out before the lock is acquired. Devin -- Devin J. Heitmueller http://www.devinheitmueller.com AIM: devinheitmueller -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
