[mythtv-users] MythTV - 0 : 1- Zoneminder
Nick Rout
nick.rout at gmail.com
Thu Jun 7 21:25:00 UTC 2012
On Fri, Jun 8, 2012 at 1:07 AM, Tom corcoran <tomc at osits.com> wrote:
>
>
>
>
>
>
> Sent: 5. juni 2012 4:43 Tom Corcoran wrote:
>
> Hi
> Several weeks ago I added a CCTV card to my work MythTV system in the hope
> of running Zoneminder on the same ox as my Backend server which is idle for
> most of the time. The card I added has 4 SAA7134 chips on board and is
> detected in by Mythbuntu successfully, Zoneminder setup was stet raight
> forward and I can view my couple of CCTV cameras perfiectly.
> The same cannot be said unfortunately for Mythtv, since adding the card I
> can no longer tune in my Hauppauge DVB S2 card to any satellite channel,
> keep receiving a channel change failure error on screen, see backend log
> below.
>
> <mythbackend.log:
> 2012-06-04 23:14:52.830 DVBSM(/dev/dvb/adapter1/frontend0), Warning:
> Cannot count Uncorrected Blocks
> eno: Operation not supported (95)
> 2012-06-04 23:14:52.837 DiSEqCDevTree, Error: No root device tree node!
> 2012-06-04 23:14:52.910 DVBChan(1:/dev/dvb/adapter1/frontend0) Error:
> Tune(): Failed to setup DiSEqC devices
> 2012-06-04 23:14:52.948 DVBChan(1:/dev/dvb/adapter1/frontend0) Error:
> SetChannelByString(17): Tuning to frequency.
> 2012-06-04 23:14:53.016 SignalMonitor: channel change failed
> 2012-06-04 23:14:53.099 SignalMonitor: channel change failed \>
>
> <dmesg:
> [425508.140655] init: mythtv-backend main process (18967) killed by TERM
> signal [427719.001693] DVB: adapter 1 frontend 0 frequency 89399980 out of
> range (950000..2150000) [427719.337693] DVB: adapter 1 frontend 0 frequency
> 89399980 out of range (950000..2150000) />
>
> I have tested the scan utility from the command line and can detect all
> the channels as originally scanned, I have removed the cards from
> Mythtvsetup and re-added it without success. If I remove the SAA7134 card I
> instantly get all my Sat channels back in Mythtv :-( I also have Hauppauge
> Nova DVB-T card with local Irish channels which is unaffected by the
> Zoneminder hardware?
>
> Anybody got any ideas as I really want these two systems to play nice ?
>
>
> Many thanks for reading.
>
> TomC
> MythTV 0.24
> Mythbuntu 11.10
> -----Original Message-----
>
> Are you running 32 or 64 bit OS?
>
> If you are running 32 bit it is possible that your system is running out
> of virtual memory.
>
> Look for something like this from dmesg:
> [ 15.863906] vmap allocation for size 16781312 failed: use vmalloc=<size>
> to increase size.
>
> Jens
>
>
>
> It doesnt appear to be related to virtual memory, there are no related
> messages in the syslog.
> To further troubleshoot this issue I have stopped the backend and manually
> tune to a DVB stream using
>
> 'szap -a 1 -c /home/tomc/channels.conf E4'
>
> this appears to lock on to the stream outputting
>
> 'status 1f | signal f800 | snr f759 | ber 00000000 | unc fffffffe |
> FE_HAS_LOCK
> status 1f | signal f800 | snr f53c | ber 00000000 | unc fffffffe |
> FE_HAS_LOCK'
>
> If I then try and record this stream using
>
> 'cat /dev/dvb/adapter1/dvr0 > /tmp/video.mpeg'
>
> The file always appears as a zero byte file......any help would be greatly
> appreciated.
>
> TomC
>
Is your system assigning static devices to your video capture devices, ie
do they always come up as the same devices, or does it change every boot?
Perhaps the system is confused about which /dev relates to what card?
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