* Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts
@ 2016-01-16 22:03 Rainer Dorsch
2016-01-16 23:16 ` Andy Furniss
0 siblings, 1 reply; 6+ messages in thread
From: Rainer Dorsch @ 2016-01-16 22:03 UTC (permalink / raw)
To: linux-media
Hi,
I have a Pinnacle PCTV DVB-S2 Stick (461e) and did connect it to a cubox-i
running openelec.
The known issues on
http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29
seem to be gone (at least I did not hit them).
Instead there seems to be another (new?) issue, that HD streams have
artefacts, see
http://forum.kodi.tv/showthread.php?tid=220129
and
https://tvheadend.org/boards/5/topics/19582?r=19584#message-19584
I tried to add that to the wiki, but my registration attempt was rejected.
Can somebody with write access to
http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29 please
add the new issue?
Certainly any hint how to solve this issue is welcome.
Thanks
Rainer
--
Rainer Dorsch
http://bokomoko.de/
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts
2016-01-16 22:03 Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts Rainer Dorsch
@ 2016-01-16 23:16 ` Andy Furniss
2016-01-16 23:43 ` Rainer Dorsch
0 siblings, 1 reply; 6+ messages in thread
From: Andy Furniss @ 2016-01-16 23:16 UTC (permalink / raw)
To: Rainer Dorsch, linux-media
Rainer Dorsch wrote:
> Hi,
>
> I have a Pinnacle PCTV DVB-S2 Stick (461e) and did connect it to a
> cubox-i running openelec.
>
> The known issues on
>
> http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29
>
> seem to be gone (at least I did not hit them).
>
> Instead there seems to be another (new?) issue, that HD streams have
> artefacts, see
>
> http://forum.kodi.tv/showthread.php?tid=220129
>
> and
>
> https://tvheadend.org/boards/5/topics/19582?r=19584#message-19584
>
> I tried to add that to the wiki, but my registration attempt was
> rejected.
>
> Can somebody with write access to
> http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29
> please add the new issue?
>
> Certainly any hint how to solve this issue is welcome.
I added a comment on the tvh forum - will paste here as well in case
anyone is interested -
You could try spinning up you cpu(s) with
nice -19 dd if=/dev/urandom of=/dev/null
If you have multiple cores maybe start more than one.
I have a couple of DVB-T2 PCTV sticks and got some usb/power save/xhci
issues on my h/w.
Above would mostly fix. Rather than do that I found that the issue was
far less if I disabled USB3 in bios to avoid using the xhci driver.
Of course your issue may be totally different - but it's worth a try.
Your symptoms do point to ts packet loss - which I know from my
experience can be at usb level. There are posts on here from the past
where people with PCIE cards also had to do similar.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts
2016-01-16 23:16 ` Andy Furniss
@ 2016-01-16 23:43 ` Rainer Dorsch
2016-01-17 10:27 ` Andy Furniss
0 siblings, 1 reply; 6+ messages in thread
From: Rainer Dorsch @ 2016-01-16 23:43 UTC (permalink / raw)
To: Andy Furniss; +Cc: linux-media
Hi Andy,
thanks for your reply.
On Saturday 16 January 2016 23:16:41 you wrote:
> Rainer Dorsch wrote:
> > Hi,
> >
> > I have a Pinnacle PCTV DVB-S2 Stick (461e) and did connect it to a
> > cubox-i running openelec.
> >
> > The known issues on
> >
> > http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29
> >
> > seem to be gone (at least I did not hit them).
> >
> > Instead there seems to be another (new?) issue, that HD streams have
> > artefacts, see
> >
> > http://forum.kodi.tv/showthread.php?tid=220129
> >
> > and
> >
> > https://tvheadend.org/boards/5/topics/19582?r=19584#message-19584
> >
> > I tried to add that to the wiki, but my registration attempt was
> > rejected.
> >
> > Can somebody with write access to
> > http://linuxtv.org/wiki/index.php/Pinnacle_PCTV_DVB-S2_Stick_%28461e%29
> > please add the new issue?
> >
> > Certainly any hint how to solve this issue is welcome.
>
> I added a comment on the tvh forum - will paste here as well in case
> anyone is interested -
>
> You could try spinning up you cpu(s) with
>
> nice -19 dd if=/dev/urandom of=/dev/null
I added four of these, but if at all then there was only a minor impact.
>
> If you have multiple cores maybe start more than one.
>
> I have a couple of DVB-T2 PCTV sticks and got some usb/power save/xhci
> issues on my h/w.
>
> Above would mostly fix. Rather than do that I found that the issue was
> far less if I disabled USB3 in bios to avoid using the xhci driver.
The cubox-i has no USB 3 port and no bios :-/
> Of course your issue may be totally different - but it's worth a try.
> Your symptoms do point to ts packet loss - which I know from my
> experience can be at usb level. There are posts on here from the past
> where people with PCIE cards also had to do similar.
Sounds reasonable. Can I enable logs which would make these drops explicit?
Thanks,
Rainer
--
Rainer Dorsch
http://bokomoko.de/
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts
2016-01-16 23:43 ` Rainer Dorsch
@ 2016-01-17 10:27 ` Andy Furniss
2016-01-17 22:12 ` Rainer Dorsch
0 siblings, 1 reply; 6+ messages in thread
From: Andy Furniss @ 2016-01-17 10:27 UTC (permalink / raw)
To: Rainer Dorsch; +Cc: linux-media
Rainer Dorsch wrote:
>>> Certainly any hint how to solve this issue is welcome.
>>
>> I added a comment on the tvh forum - will paste here as well in
>> case anyone is interested -
>>
>> You could try spinning up you cpu(s) with
>>
>> nice -19 dd if=/dev/urandom of=/dev/null
>
> I added four of these, but if at all then there was only a minor
> impact.
Oh, OK it was worth a try.
>> If you have multiple cores maybe start more than one.
>>
>> I have a couple of DVB-T2 PCTV sticks and got some usb/power
>> save/xhci issues on my h/w.
>>
>> Above would mostly fix. Rather than do that I found that the issue
>> was far less if I disabled USB3 in bios to avoid using the xhci
>> driver.
>
> The cubox-i has no USB 3 port and no bios :-/
Ahh, quite different h/w then. Mine was a quad core baytrail DC board.
>> Of course your issue may be totally different - but it's worth a
>> try.
>
>> Your symptoms do point to ts packet loss - which I know from my
>> experience can be at usb level. There are posts on here from the
>> past where people with PCIE cards also had to do similar.
>
> Sounds reasonable. Can I enable logs which would make these drops
> explicit?
Not that I know of at kernel level. The only way really is to infer loss
from the continuity counters, which TVH already logs.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts
2016-01-17 10:27 ` Andy Furniss
@ 2016-01-17 22:12 ` Rainer Dorsch
2016-01-17 23:07 ` Andy Furniss
0 siblings, 1 reply; 6+ messages in thread
From: Rainer Dorsch @ 2016-01-17 22:12 UTC (permalink / raw)
To: Andy Furniss; +Cc: linux-media
Hi Andy,
thanks for your reply.
On Sunday 17 January 2016 10:27:15 Andy Furniss wrote:
> Not that I know of at kernel level. The only way really is to infer loss
> from the continuity counters, which TVH already logs.
That is already new for me. I do not find the tvheadend.log in openelec, and
grep did not find a match either. Do you how I enable logging continuity
errors in tvheadend?
Thanks
Rainer
--
Rainer Dorsch
http://bokomoko.de/
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts
2016-01-17 22:12 ` Rainer Dorsch
@ 2016-01-17 23:07 ` Andy Furniss
0 siblings, 0 replies; 6+ messages in thread
From: Andy Furniss @ 2016-01-17 23:07 UTC (permalink / raw)
To: Rainer Dorsch; +Cc: linux-media
Rainer Dorsch wrote:
> Hi Andy,
>
> thanks for your reply.
>
> On Sunday 17 January 2016 10:27:15 Andy Furniss wrote:
>> Not that I know of at kernel level. The only way really is to infer
>> loss from the continuity counters, which TVH already logs.
>
> That is already new for me. I do not find the tvheadend.log in
> openelec, and grep did not find a match either. Do you how I enable
> logging continuity errors in tvheadend?
I don't know about openelec, but for me tvh by default (well I can't
remember setting it up and the debugging tab under configure is empty),
logs to /var/log/daemon.log and /var/log/sys.log.
It may be different on openelec, have a look in /var/log/.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-01-17 23:08 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2016-01-16 22:03 Pinnacle PCTV DVB-S2 Stick (461e) - HD Streams with artefacts Rainer Dorsch
2016-01-16 23:16 ` Andy Furniss
2016-01-16 23:43 ` Rainer Dorsch
2016-01-17 10:27 ` Andy Furniss
2016-01-17 22:12 ` Rainer Dorsch
2016-01-17 23:07 ` Andy Furniss
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