[mythtv-users] MythTV getting black screen for Live TV

Matt Rude mythtv at mattrude.com
Wed Mar 7 21:30:04 UTC 2007

Spam Spam wrote:
> I have a client who has been using MythTV to display video for in-house
> use. They have been using MythTV v-0.18.1 for several years and have
> made several custom modifications to the code so they are reluctant to
> upgrade to a later version at this time.
> They are using a PVR350 for video input.
> The system was running fine under Fedora Core 6 using the 2.6.18 kernel.
> However, recently one of their developers upgraded the machine to 
> kernel version 2.6.19 and LiveTV stopped working.
> When a user selects Live TV from the menu the system will display one
> frame of video and then go to a black screen.
> I have connected mplayer to the video input and it plays the video just
> fine. I saved a copy of the ring buffer that was being produced by the
> backend while the frontend was displaying a black screen. When I play
> the saved ring buffer with mplayer, it plays with a little break up at
> the beginning but then video looks fine as well. It seems to me that the
> problem is in getting the video from the backend to the frontend.
> Could someone please suggest to me what might be causing this problem?
> Thanks for any assistance you may be able to give me,
> Scott.

Make sure you have all the new kernel info.

You can try to upgrade the ivtv-firmware with:
yum -y install ivtv-firmware
yum -y install ivtv-kmdl-`uname -r`.`uname -m`
yum -y install ivtvdev
yum -y install ivtv_xdriver
yum -y install video4linux-kmdl-`uname -r`.`uname -m`

I have to run this on my Fedora system with a PVR-350 when ever the
Kernel gets upgraded.

for LIRC run:
yum -y install lirc-kmdl-`uname -r`.`uname -m`
yum -y install lirc


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