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ljalves / linux_media

TBS linux open source drivers
https://github.com/ljalves/linux_media/wiki
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TBS5281 card DVB-C network: invalid checksum problem #151

Closed schneci closed 7 years ago

schneci commented 7 years ago

I'm using a TBS5281 card with Tvheadend 4.2 for receiving DVB-C channels and the Silicon Labs Si2168 opensource TBS driver at most of the channels generate the following error messages in log file of Tvheadend:

TS: Silicon Labs Si2168 : DVB-C #0/DVB-C network/250MHz/TV2: MPEG2VIDEO @ #201 Continuity counter error (total 1557) TS: Silicon Labs Si2168 : DVB-C #0/DVB-C network/250MHz/TV2: MPEG2AUDIO @ #210 Continuity counter error (total 252) TS: Silicon Labs Si2168 : DVB-C #0/DVB-C network/250MHz/TV2: TELETEXT @ #220 Continuity counter error (total 191) TS: Silicon Labs Si2168 : DVB-C #0/DVB-C network/250MHz/TV2: MPEG2AUDIO @ #211 Continuity counter error (total 236) TS: Silicon Labs Si2168 : DVB-C #0/DVB-C network/250MHz/TV2: MPEG2VIDEO @ #201 Corrupted PES header (errors 1) pmt: 250MHz in DVB-C network: invalid checksum (len 55, errors 1) eit: 250MHz in DVB-C network: invalid checksum (len 1718, errors 40)

If I use the proprietary TBS driver everything works correctly. Could somebody help to me?

LubosD commented 7 years ago

I am seeing a similar problem on a TBS6985 (quad DVB-S) card. I use VDR and after the card has been in use for a long time (days?), the picture starts breaking up. Restarting VDR always fixes the problem. I've never seen this with official drivers.

schneci commented 7 years ago

My problem has solved by using the following options in Libreelec 7.95.1 version which uses 4.9x kernel version:

options cx231xx transfer_mode=0

In Libreelec or Openelec environment you can set this option using following command:

echo "options cx231xx transfer_mode=0" > /storage/.config/modprobe.d/cx231xx.conf