[mythtv-users] recordings cut off early especially when watching recoding in progress

[David Leinbach]

Well that makes sense.  The reason I was asking was I just added a new hard
drive to my frontend/backend box and then started to have a problem with it
freezing regularly.  I think it was a temperature issue as the machine
didn't have very good ventilation where it was located.  I didn't really
think about voltages.  What I ended up doing was setting up a dedicated
storage/mysql machine in another room and making that one just a
frontend/backend over the network (I wanted to move the backend portion too
but the encoder card has to stay in it because I don't have a cable outlet
anywhere else and I already have too many cables running around our place so
another would probably be too much for my wife :-))

Thanks

On 11/10/06, Jon Vanderwoude <jvanderw at gmail.com> wrote:
>
> I installed Sensord, set it up to log the voltages ever 5 minutes or
> so, checked the logs right around the time it crashed, the 3.3v rail
> was always out of spec (3.10 ish... )
>
> looked up the buffer chip that is on the PVR250, checked out the white
> paper it runs off 3.3V's
>
> I hooked up the volt meter in side the case just to make sure that the
> sensor on the motherboard was accurate (because I'm cheap and don't
> want to buy a new psu with out good reason) and sure enough it was
> dropping below 3.1 (memory chip specs say it should work down to 3.0,
> but the reality seems to be different... or there is something in
> series with the chip in the board that pulls off some extra
> voltage...)
>
> replaced it no problem with it for a week now, when before I couldn't
> make it two hours with out it stopping, and less if I was watching tv
> while recording.  I let it run watching tv on a remote front end over
> night with no issues (while encoding previous recordings just to
> stress test)
>
> On 11/9/06, David Leinbach <dleinbac at gmail.com> wrote:
> > Out of curiosity, how did you determine that this was the problem?
> >
> >
> > On 11/9/06, Jon Vanderwoude <jvanderw at gmail.com > wrote:
> > >
> > > On 10/13/06, Nick <knowledgejunkie at gmail.com > wrote:
> > > > On 12/10/06, McNally <mcnallychris at pobox.com> wrote:
> > > > > Hi,
> > > > >
> > > > > I'm using mythtv 0.20.  When I watch recording in progress, such
> as a
> > > > > baseball game, I begin watching about 40 minutes after the start,
> fast
> > > > > forward through commercials and other junk,  and find that the
> actual
> > > > > recording seems to have stopped soon after i started watching.
> This
> > has
> > > > > happened twice already to me. I see from the logs that there seems
> to
> > be
> > > > > a DMA error and it may be IVTV related. Other recordings have
> ended
> > much
> > > > > sooner than scheduled and there is an error in the Myth log.
> > > > >
> > > > > I am using an ASUS A8N-VM CSM mainboard with an AMD Sempron  which
> has
> > > > > NVIDIA nforce and gforce chipsets. The backend and frontend are
> the
> > same
> > > > > box. I am using ext3. The CPU from top is around 90% when watching
> > > > > recordings. I have sections of the logs below.  Thanks in advance.
> > > > >
> > > > > ivtv version
> > > > > ivtv:  version 0.7.0 (tagged release) loading
> > > > > ivtv:  Linux version: 2.6.17-1.2142_FC4 mod_unload 686 REGPARM
> > 4KSTACKS
> > > > > gcc-4.0
> > > >
> > > > Try upgrading to ivtv 0.7.1 which has a fix for DMA problems like
> this
> > > > - from the ivtv changelog:
> > > >
> > > > IVTV changes:
> > > >
> > > > 0.7.1 stable release
> > > >         - Add getopt support to test/vbi. Add new timeout option.
> > > >         - Fix South African broadcast frequency table.
> > > >         - Detect and workaround DMA offsets that can be introduced
> by
> > > >           a DMA error.
> > > >         - Sliced VBI always uses PIO, never DMA.
> > > >
> > > >
> > > > Nick
> > >
> > >
> > > I was having this issue even after installing the new firmware, turns
> > > out the 3.3v line on my power supply was bad and the memory chip on
> > > the PVR-250 wasn't getting the juice it needed to keep it going,
> > > replacing the power supply resolved the issue.
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users at mythtv.org
> > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > >
> >
> >
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
> >
> >
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20061110/3d3f1bff/attachment-0001.htm