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

Quoted 8 lines

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.

Rainer Dorsch

author

2016-01-16 23:43 UTC #2 lore raw

Hi Andy,

thanks for your reply.

Quoted 28 lines · On Saturday 16 January 2016 23:16:41 you wrote:

Quoted 27 lines · Rainer Dorsch
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?

Quoted 8 lines

Quoted 1 line
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.

Quoted 8 lines

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 :-/

Quoted 5 lines

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

Signature · 2 lines

Rainer Dorsch
http://bokomoko.de/

Andy Furniss

2016-01-17 10:27 UTC #3 lore raw

Quoted 11 lines · Rainer Dorsch

Quoted 8 lines
Quoted 1 line
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.

Quoted 10 lines

Quoted 8 lines
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.

Quoted 9 lines

Quoted 6 lines
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.

Rainer Dorsch

author

2016-01-17 22:12 UTC #4 lore raw

Hi Andy,

thanks for your reply.

Quoted 2 lines · 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

Signature · 2 lines

Rainer Dorsch
http://bokomoko.de/

Andy Furniss

2016-01-17 23:08 UTC #5 lore raw

Quoted 11 lines · Rainer Dorsch

Hi Andy,
thanks for your reply.
Quoted 2 lines · 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/.