Autor Thema: SkyTV VIII issue  (Gelesen 1044 mal)

okrisz

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SkyTV VIII issue
« am: September 07, 2018, 03:14:40 Nachmittag »
Hi,

I have 2 Sundtek SkyTV sticks.  One older version (version VI)  and I just received a new one which is version VIII.

I have no problem with the old stick on a raspberry 3 B+ using Libreelec and Tvheadend. Everything works just fine.

But when I replace the old SkyTV stick with the new one I have issues on HD channels. (I updated the Sundtek driver)  I have a lot of Continuity errors and the stream stalls for 1-3 secs regularly so any HD channel basically unwatchable.

What do you suggest to do?




Sundtek

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Re: SkyTV VIII issue
« Antwort #1 am: September 07, 2018, 03:35:10 Nachmittag »
Hi,

can you join the chat?

https://support.sundtek.de/chat.php

also which transponder?
« Letzte Änderung: September 07, 2018, 04:07:19 Nachmittag von Sundtek »
Failure is a good thing! I'll fix it

okrisz

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Re: SkyTV VIII issue
« Antwort #2 am: September 07, 2018, 04:15:23 Nachmittag »
Thor 1W   -   DVB-S Network/12034.36V/Nat Geo Wild HD


Sundtek

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Re: SkyTV VIII issue
« Antwort #3 am: September 07, 2018, 05:13:11 Nachmittag »
In Detail (just for us):
SIGNAL: [.............................    ] ( 89%)
SATQUALITY:  72% 
SNR:  10 
BER:      0
FREQ: 11842560   KHz
LOCKED: YES
SYS: DVB-S2
SYM: 30000000
FEC: FEC_3_4
MOD: PSK_8
VOLTAGE: V(13V)
TONE: ON

> FE00 - RECEIVED DATA WITHIN 1 SECONDS 8386560
RECEIVED DATA WITHIN 1 SECOND: 8386560
Failure is a good thing! I'll fix it

Sundtek

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Re: SkyTV VIII issue
« Antwort #4 am: September 07, 2018, 06:00:09 Nachmittag »
We have not seen that issue before on the raspberry PI, however increasing the cpu frequency improved or fixed that issue.

either
* in the config.txt or
* mediaclient --cpupush=performance
or (in case mediaclient is not found):
* /opt/bin/mediaclient --cpupush=performance
Failure is a good thing! I'll fix it

okrisz

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Re: SkyTV VIII issue
« Antwort #5 am: Dezember 21, 2019, 01:32:59 Nachmittag »
I am still suffering from this issue. The mediaclient --cpupush=performance  does not solve the issue.

I wrote several emails to support but no response. My old SkyTV ultimate 6  stick does not have this issue. I don't know what to do. :(


Sundtek

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Re: SkyTV VIII issue
« Antwort #6 am: Dezember 21, 2019, 07:56:53 Nachmittag »
I think this is a Skytv 8A issue.
We have only manufactured around 10 units of those and went for SkyTV 8B afterwards since the manufacturability of the first revision was too difficult.

However for the Sky 8A units /opt/bin/mediaclient --transfermode=iso should fix the problem (but I will evaluate that within the next days). The default is transfermode is --transfermode=bulk

SkyTV 8B and ongoing use different chipsets with larger buffers and were released around October 2018.
Failure is a good thing! I'll fix it

okrisz

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Re: SkyTV VIII issue
« Antwort #7 am: Dezember 22, 2019, 09:45:51 Vormittag »
transfermode=iso didn't fix the issue :(
I also set nullpackets=on as the doc says

Sundtek

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Re: SkyTV VIII issue
« Antwort #8 am: Dezember 22, 2019, 12:39:54 Nachmittag »
Isochronous is not delivering any data on your system right?
I will check that at the beginning of next week.

This SkyTV 8A is using the same chipset as the DVB-C tuners but the bandwidth of DVB-C is much lower.
SkyTV 8B (USB 2.0) and following (which include multituners) are optimized for bandwidth up to 360 mbit (on a Raspberry PI). Multituners are FPGA based including a lot buffer memory.
Failure is a good thing! I'll fix it

okrisz

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Re: SkyTV VIII issue
« Antwort #9 am: Dezember 23, 2019, 04:21:10 Nachmittag »
Isochronous is not delivering any data on your system right?

I dont know what I have to check for that.