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PostPosted: Wed Oct 20, 2004 12:02 pm 
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Joined: Mon Sep 20, 2004 4:49 pm
Posts: 26
Location: St. Louis, MO (USA)
Help!

I just had everything working perfectly in R4V4 when I decided I'd take the plunge and upgrade to R4V5. (Hey, animated doppler radar maps and a few of the other things sounded good! What can I say!?)

Anyway, I upgraded using the ISO image - and after a few little glitches, seem to have gotten most of it working properly.

Only problem now is, I only get a black and white picture any time I try to watch TV. I chose the xv and lirc options (i686 modules) when updating, if this makes any difference? I downloaded the latest 6111 NVidia drivers and recompiled them (as I was warned I might have to do if I chose to use the xv feature), and they seem to be working right.

I have a PVR-250 board, so I assumed my problem lies someplace with ivtv. I've tried downloading, compiling and installing a number of different versions, to no avail. No matter which ones I try, I either get a perfectly good black and white TV picture, or one that's choppy and "stutters" every few seconds. I can't get color at all!

I have a Dish Network satellite hooked up via s-video to the PVR-250, and this worked just fine in R4V4, so I don't know what's going on here?? I even tried connecting a composite video cable to see if it was trying to do composite for some reason, but then I just got a blank display.

I do get perfectly good color in all of the other menus and screens, and even the TV guide itself, so that makes me assume the nVidia drivers handling the DVI output to my big-screen TV are ok. (But oddly enough, I did get a color TV display working *one time* until I rebooted, and that was right after I compiled the latest nVidia drivers on the machine!)


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PostPosted: Wed Oct 20, 2004 6:13 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Check your /etc/X11/XF86Config-4 fil and make sure that you haven't selected the wrong one of SVIDEO or COMPOSITE for your TVOutFormat. It might also be an XV issue (not XvMC), make sure you've got it enabled in your setup and then use the F key to cycle through the settings and make sure they're sane. Also use thr G key to cycle through the capture settings and make sure they're sane.


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PostPosted: Wed Oct 20, 2004 7:58 pm 
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Joined: Mon Sep 20, 2004 4:49 pm
Posts: 26
Location: St. Louis, MO (USA)
Actually, since my big-screen front projection TV has a DVI connector on the back of it, I have my Myth box connected to my GeForce 4TI card that way. Therefore, I don't think it matters if I specify SVIDEO or COMPOSITE for the "TVOutFormat". Either way, I get the same results out the DVI connection - since the card treats it like an attached VGA monitor rather than one of the TV output ports.

I did try both though, just to be sure, and it made no difference.

I *was* finally able to get a good color TV picture if I ssh'd into the box and entered the proper "ioctl" command to force ivtv to use svideo. But why is this necessary? I already have things configured in the mythtv-setup program to use the svideo0 port on the PVR-250?


tjc wrote:
Check your /etc/X11/XF86Config-4 fil and make sure that you haven't selected the wrong one of SVIDEO or COMPOSITE for your TVOutFormat. It might also be an XV issue (not XvMC), make sure you've got it enabled in your setup and then use the F key to cycle through the settings and make sure they're sane. Also use thr G key to cycle through the capture settings and make sure they're sane.


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PostPosted: Wed Oct 20, 2004 9:22 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Maybe you did something odd with your input source setup...

This is easy to do because it's scattered across multiple places and it's neither well explained or obvious.

1) Under mythtv-setup 2 - "capture cards" make sure you've got the right default input (probably svideo-0 given what you said about dish net over svideo).

2) Under mythtv-setup 3 the name of your "video source" - meaning the input to your MythTV box in the "provider" sense which basically just lays out your channel line up.

3) Under mythtv-setup 4 "Input Connections" check the association between video source and physical/logical port on the PVR card. Here you have to be careful that the "video source" is only associated with one connection (again probaly with svideo-0).


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