[linux-dvb] FE_HAS_LOCK but no signal

Tom Jacobs tom.jacobs at gmail.com
Thu Mar 15 20:59:50 CET 2007


i think that my channels.conf contains valid data. here is the entry for BBC One

BBC ONE:641833330:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_3_4:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:600:601:4173

when i tzap i get this

[root at mythtv_linux ~]# tzap "BBC ONE"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 641833330 Hz
video pid 0x0258, audio pid 0x0259
status 00 | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e |
status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e | FE_HAS_LOCK
status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e | FE_HAS_LOCK
status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e | FE_HAS_LOCK
status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e | FE_HAS_LOCK
status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e | FE_HAS_LOCK
status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e | FE_HAS_LOCK
status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e | FE_HAS_LOCK

it is using the correct frequency and pids. i have checked the box
when it is in stb mode and the information (fec etc) within
channels.conf is correct. also since the box has a scart connection i
can see that it does actually change to the correct channel.

from this i assume that the tuning is correct (can actually see a
clear picture and has a lock) but for some reason it is not sending
any data to the pc.

any other ideas?


On 15/03/07, Matthew Schultz <mattsch at gmail.com> wrote:
> Scan can have a lot of false positives.  It doesn't weed out the frequencies
> that have locks but don't have video, the video is encrypted, etc.
>
>
> Matt
>
>
> On 3/15/07, Tom Jacobs <tom.jacobs at gmail.com> wrote:
> >
> > i am having problems getting data from my STB
> >
> > i am using Mythdora as my distro so, i believe this is basically Fedora
> > Core 5 with MythTV-0.20 included (and various other required packages).
> >
> > i have a Hauppauge DEC2000 stb which i am trying to use within mythtv.
> > the correct firmware is in /lib/firmware and from dmesg i can see the
> > adapter and frontend are both registered.
> >
> > i can successfully ./scan for available channels and have produced my
> > channels.conf file. when i ./tzap i get the following:
> >
> > [root at mythtv_linux ~]# tzap -r "BBC TWO"
> > using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> > tuning to 641833330 Hz
> > video pid 0x0262, audio pid 0x0263
> > status 00 | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e |
> > status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e |
> > FE_HAS_LOCK
> > status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e |
> > FE_HAS_LOCK
> > status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e |
> > FE_HAS_LOCK
> > status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 009c645e |
> > FE_HAS_LOCK
> >
> > if i pick different channels the frequency an pids change but i always
> > get signal 0000 and a lock. if i try and capture stream using the
> following:
> >
> > cat /dev/dvb/adapter0/dvr0 > myvideo.mpg
> >
> > i get a file of zero bytes. if i try and use mplayer or xine they both
> > fail too. since this is a stb also i can play a scart cable into it and
> > i do see that the channels are being changed when i tzap  but i just
> > dont seem to be getting any data back from the stb.
> >
> > does anyone have any ideas?
> >
> > _______________________________________________
> > linux-dvb mailing list
> > linux-dvb at linuxtv.org
> > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
> >
>
>
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