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Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04

Added by La Te 3 months ago

I'm having enormous amount of Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04 Server running as VirtualBox guest. I'm getting around 20 000 Continuity Errors in couple of minutes and can't see a single proper frame. Usually the playback is not starting at all on VLC. Then everything works just nicely on OSMC on Raspberry Pi. I would prefer running Tvheadend on that Ubuntu though as it is easier to arrange large disk, fast network and reasonable performance for it. Actually I'm not even thinking Tvheadend is the problem as I'm not able to get the picture on another Ubuntu 18.04 Desktop with Kaffeine player either. However, by searching I see that others have had similar issues.

Where I should start investigating and what to try in order to get that Ubuntu work with Tvheadend and my tuner properly? I wonder is the problem with VirtualBox or software installed by following Hauppauge guide. Somehow I'm feeling it is some driver or other software issue as everything works out of the box with OSMC and not with Ubuntu by following Hauppauge guidance.

What I have tried so far.
- Using same cables with each setup and also shorter cables.
- Several reboots and other USB ports.

My setups
OSMC
- Latest version and all patches installed
- Tvheadend 4.2.8 from OSMC
- Raspberry Pi 3 B+
$ uname -a
Linux telkkari 4.14.78-4-osmc #1 SMP PREEMPT Wed Dec 12 17:58:11 UTC 2018 armv7l GNU/Linux

Ubuntu 18.04 Server
- Latest version and all patches installed
- VirtualBox guest on Ubuntu host, tried also on macOS host
- VirtualBox extension pack installed using USB 2.0
- Tvheadend 4.2.8 from Ubuntu repo
- Drivers installed as instructed by Hauppauge http://www.hauppauge.com/pages/support/support_linux.html#ppa
$ uname -a
Linux teevee 4.15.0-47201904171620-generic #0+mediatree+hauppauge-Ubuntu SMP Wed Apr 17 22:20:12 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Ubuntu 18.04 Desktop
- Latest version and all patches installed
- VirtualBox guest on macOS host
- VirtualBox extension pack installed using USB 2.0
- Drivers installed as instructed by Hauppauge http://www.hauppauge.com/pages/support/support_linux.html#ppa
- Kaffeine
$ uname -a
Linux ubuntuvm 4.15.0-47201904171620-generic #0+mediatree+hauppauge-Ubuntu SMP Wed Apr 17 22:20:12 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

At least the firmware seems to be the same on different setups. I also compared the actual files.

[ 10.879394] si2168 4-0067: downloading firmware from file 'dvb-demod-si2168-b40-01.fw'
[ 14.880338] si2168 4-0067: firmware version: B 4.0.11
[ 14.979566] si2157 6-0063: found a 'Silicon Labs Si2157-A30'
[ 15.083108] si2157 6-0063: firmware version: 3.0.5

Usually getting around these values so signal should be fine.
SNR 37 dB
Signal Strength -30 dBm


Replies (7)

RE: Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04 - Added by Mark Clarkstone 3 months ago

Have you tried directly on the host (bypassing vbox)? I had something similar on esxi, I think it is a driver issue.

RE: Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04 - Added by La Te 3 months ago

Mark Clarkstone wrote:

Have you tried directly on the host (bypassing vbox)? I had something similar on esxi, I think it is a driver issue.

No I haven't. Maybe I'll try it on some of my older hw.

RE: Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04 - Added by La Te 3 months ago

saen acro wrote:

Write to Brad Love
https://github.com/b-rad-NDi/Ubuntu-media-tree-kernel-builder/issues
He is developer of modules.

I really don't know is the problem in some modules and which it might be. Does it look like so?

Is there some command line command which I could use to easily test and demonstrate the issue? That would speed up testing on different configurations and maybe without Tvheadend. Also, I believe that could help in understanding which component it is that is causing the issue.

RE: Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04 - Added by saen acro 3 months ago

What about measure signal of adapter "1"

femon -a 1
femon -a 1 -H
dvb-fe-tool -a 1 -m -v

RE: Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04 - Added by Lisa White 3 months ago

Hi, I had a simular problem with my Hauppauge quad. It drove me crazy. I tried every approach to help with the Continuity Errors and nothing would work. On a hunch, I installed xbuntu 18.04 and tvheadend works excellent with this operating system.. My epg grabbers work great and very rarely do I get any Continuity Errors. The only time I get those error is when the weather is bad in my area and the signal drops from inclement weather . I thought this was a fluke so I reinstalled the Ubuntu and Continuity Errors came back.

I hope this information may help you.

RE: Continuity Errors with Hauppauge WinTV-dualHD on Ubuntu 18.04 - Added by La Te 2 months ago

saen acro wrote:

What about measure signal of adapter "1"
[...]

If I understand the numbers the signal quality seems to be just fine.

OSMC Raspberry Pi
$ dvb-fe-tool -a 0 -m -v
Lock (0x1f) Signal= -31.00dBm C/N= 37.25dB UCB= 672 postBER= 0
Lock (0x1f) Signal= -31.00dBm C/N= 37.25dB UCB= 672 postBER= 0
$ dvb-fe-tool -a 1 -m -v
Lock (0x1f) Signal= -29.00dBm C/N= 37.25dB UCB= 787 postBER= 0
Lock (0x1f) Signal= -29.00dBm C/N= 37.25dB UCB= 787 postBER= 0

Ubuntu 18.04 Server
$ dvb-fe-tool -a 0 -m -v
Lock (0x1f) Signal= -28.00dBm C/N= 37.25dB UCB= 17074 postBER= 0
Lock (0x1f) Signal= -28.00dBm C/N= 37.50dB UCB= 17074 postBER= 0
$ dvb-fe-tool -a 1 -m -v
Lock (0x1f) Signal= -29.00dBm C/N= 37.50dB UCB= 414 postBER= 0
Lock (0x1f) Signal= -29.00dBm C/N= 37.25dB UCB= 414 postBER= 0

    (1-7/7)