Kernel 5.8

[bjorneg]

Hi
Im on plain vanilla Debian + tbs-drivers (V4L).
Kernel 5.7 works for me (I.e. Debian Stable + 5.7 buster backports)
On kernel 5.8 (Debian testing) unencrypted channels work (mplayer/vlc plays channel), but encrypted channels fails (see below).

Note: I have one physical adapter and one loopback adapter. I use ffdecsawrapper to join them. It may be ffdecsawrapper that fail as well.
However, the log from ffdecswrapper looks normal to me - it finds the correct key and so forth.

Snip from from mplayer log:

Cannot seek backward in linear streams!
Seek failed
TS file format detected.
Cannot seek backward in linear streams!
Seek failed
VIDEO MPEG2(pid=1016) NO AUDIO! (try increasing -tsprobe) NO SUBS (yet)! PROGRAM N. 0
Cannot seek backward in linear streams!
Seek failed

I dont know how to proceed - any hint on where to start debugging? Is it ffdecsawrapper or dvbloopback that need fixing? What to look for?

[bas-t]

Well, the v4l tbs drivers are frequently broken with newest kernels.
Seems like a good starting point to me.

[bjorneg]

I have tried with a Terratec Cinergy 1200 DVB-C card (budget-av driver) and without compiling V4l-drivers - same result. Unencrypted channels works, encrypted do not work.

[bas-t]

Sorry, can't help you. It's just that there are so many possible bummers able to cause your discomfort. I for one have experienced major trouble caused by my provider, that does not follow the standard rules in dvb-c..
On the other hand, just upgrading to linux-5.8.x points to just that. Your posts do not indicate that any other variable is to be consiidered to be 'the bad guy' So maybe some changes to the dvb subsystem interfere with your drivers.
I've had reports from other users stating that their setup works very well with linux-5.8.x.
Good luck!

[bjorneg]

Right now Im happy, but confused.
It works like a charm w Mythtv, but not with VLC nor mplayer. Very, very strange. I thought you could throw more or less whatever on them. (maybe you can with the right command line)
Thanks anyway!