[mythtv-users] Problems running Myth - segfault starting liveTV

Thomas tlann at technoeclectic.com
Sat Aug 20 21:55:11 UTC 2005

This won't help with your missing file problem.  But you could have 
linux reload the tuner on bootup.

In redhat you can edit rc.local and do the rmmod and modprobe the tuner 
with whatever you need.  I had to do this for my pvr350 card upon 
bootup.  Except I just modprobed the ivtv module.  I also had to restart 
mythbackend for some reason.  I don't know why.

Hopefully, this helps you solve one problem.


Blastzone wrote:
> No joy.  Still the same problem.
> running mythfrontend with the -v all flag returns a log file ending
> with "nVidiaVideoSync: Could not open device /dev/nvidia0; no such
> file or directory"
> On 8/20/05, David Ellis <david at ellisonline.ca> wrote:
>>Put -nvidia in your USE Flags in "/etc/make.conf" and emerge mythtv again.
>>This will remove the NVidia support and presumably allow you to start.
>>-----Original Message-----
>>From: mythtv-users-bounces at mythtv.org
>>[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Blastzone
>>Sent: Saturday, August 20, 2005 10:38 AM
>>To: mythtv-users at mythtv.org
>>Subject: [mythtv-users] Problems running Myth - segfault starting liveTV
>>I've been working on a MythTV box for a few months now, and it's been
>>one trouble after another.
>>Word of caution:  Pundit-R's don't seem to like SATA HDD and PATA DVD
>>drives together.
>>I've put in a Hauppauge PVR-250 and a 160GB PATA drive along with the
>>DVD-RW drive.
>>The system is running Gentoo 2005.1
>>So far, so good, I can watch DVDs through mplayer
>>I installed the Hauppauge card, and had problems getting it to tune.
>>Seems that the tuner module does not load with the correct tuner
>>parameter.  On boot I have to manually unload that module with an
>>rmmod, and reload it with a "modprobe tuner type=39".  Then the card
>>will tune to NSTC cable (using mplayer & ptune-ui to test)
>>Started up Myth for the first time.  Backend runs OK, frontend starts
>>OK.  Try to choose Live TV, and the screen goes black for about 5 sec,
>>then returns to X (using evilWM) with a "segmentation fault" error.
>>No other information is provided.
>>I've rebuilt Myth from source, and build using the --debug option, but
>>I can't seem to get mythfrontend to start from a virtual console and
>>display on the local X.  it tells me no X server is available (yes, X
>>is running, and the DISPLAY variable is set).  Running mythfrontend in
>>gdb locally ends up locking the display when it segfaults.  Ctl-C, etc
>>does not get me back to the console to view the GDB output (only
>>solution is killing the X server).
>>So, I turned on verbose logging.  Just before it segfaults, the
>>logfile shows myth looking for /dev/nvidia0   Which doesn't exist on
>>my pundit's ATI board.
>>Following this recent thread:
>>http://www.gossamer-threads.com/lists/mythtv/users/144660  has not
>>proved helpful as the instructions to disable XvMC (settings -> next
>>-> next, etc). don't jive with myth 0.18.1
>>The .configure output when building myth shows no XvMC and no OpenGL
>>support, so, wtf?
>>Bottom line:  Why is myth looking for /dev/nvidia0 when it shouldn't
>>be?, how do I stop that?, and why will there be no broadcast HDTV in
>>my area until fall 2006?
>>Thanks for anyone's help.  I can't imagine that pundit-R + pvr250 +
>>gentoo is a strange combination, so odds are SOMEONE has fought with
>>this before.

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