[mythtv-users] Cannot watch LiveTV

Raymond Wagner raymond at wagnerrp.com
Thu Oct 27 20:01:34 UTC 2011

On 10/27/2011 14:38, Michael Sullivan wrote:
> 2011-10-27 13:32:00.773 Expiring 25 MBytes for 1002 @ Thu Oct 27
> 13:00:00 2011 =>  Knitting Daily "Whimsical Knits"
> 2011-10-27 13:32:00.774 autoexpire: Expiring Program: Expiring 25 MBytes
> for 1002 @ Thu Oct 27 13:00:00 2011 =>  Knitting Daily "Whimsical Knits"

The fact that there was 25MB of video to expire suggests everything was 
working on your backend.  The problem seems to be a failure to start 
playback on your frontend.

>   *********************** WARNING ***********************
>   ivtv drivers prior to 0.10.0 can cause lockups when
>   reading VBI. Drivers between 0.10.5 and 1.0.3+ do not
>   properly capture VBI data on PVR-250 and PVR-350 cards.
> The card type I have set in mythtv-setup is IVTV MPEG-2 encoder.  This
> seems strange as the output above seems to recommend against

IVTV drivers prior to 1.0 were numbered against the kernel they were 
designed to work with.  0.4 (where I started using them) ran against the 
2.6.14 kernel.  0.6 against 2.6.16.  0.10 against 2.6.20.  The IVTV 
drivers ceased to exist entirely some time in the mid 2.6.2x range, as 
they were integrated into the vanilla kernel.

This error is only a warning for when you have enabled VBI (closed 
captioning), and it only matters when you are using a positively ancient 
kernel.  Even the RHEL/CentOS users have moved beyond previous 2.6.18 
used for their previous release.  I would expect a Gentoo user to be 
using something in the 2.6.3x range, even with a year and a half old 
version of MythTV.

> [ebuild   R    ] media-tv/mythtv-0.23.1_p27077  USE="alsa css dbus mmx
> perl python tiff (-altivec) -autostart -debug -directv -dvb -faad -fftw
> -ieee1394 -jack -lcd -lirc -pulseaudio -vdpau -xvmc" VIDEO_CARDS="via
> -nvidia" 0 kB

Some odd choices here.  You have an HVR-1950, but you are compiling 
without DVB support.  That means you won't be able to record digital 
broadcasts on that tuner.  You are compiling with with 'via', but not 
'xvmc'.  The old low power VIA systems were pretty much worthless 
without XvMC, and of limited worth with it.  Most people have long since 
written them off and upgraded.  What hardware are you trying to run this on?

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