[mythtv-users]Help approaching install....question on hackingbttv/recompiling kernel? *slightly OT*

Mike Miller miller44 at optonline.net
Mon Jul 7 20:30:42 EDT 2003


Heres an interesting turn of events.....i had to reinstall mandrake
anyway so I said right now forget about LIRC I just want to get a
working picture.  When I set the correct parameters tuner=2 or not I
still get shitty video.  I thought/hoped it was b/c it said tuner=5, I
open xawtv, I change it to NTSC and to us-cable.  The picture on all of
the channels is fuzzy/lines through it, its really bad quality.  The
source is fine however.  Also only overscan works, grabdisplay just
produces a blank screen for me.  Any ideas?  Am I correct that I should
be able to get "tv" quality reception from xawtv?  I already have had a
semi-working myth box up at one point and I actually think if I can fix
this video issue I can get it working.
Thanks again

-----Original Message-----
From: mythtv-users-bounces at snowman.net
[mailto:mythtv-users-bounces at snowman.net] On Behalf Of Igor Izyumin
Sent: Monday, July 07, 2003 7:09 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users]Help approaching install....question on
hackingbttv/recompiling kernel? *slightly OT*

Mike Miller wrote:

> Apparently the tv tuner card I have, winfast tv 2000 xp does not get 
> autodetected right, it gets autodetected as tuner type 5 (pal) which 
> is wrong.
>
> I found this post 
>
http://www.gossamer-threads.com/perl/mailarc/gforum.cgi?post=52624;searc
h_string=leadtek%20recompile;guest=755377&t=search_engine#52624 
>
<http://www.gossamer-threads.com/perl/mailarc/gforum.cgi?post=52624;sear
ch_string=leadtek%20recompile;guest=755377&t=search_engine#52624>
>
> So I need to edit that file and the rebuild the kernel, b/c if I try 
> to force bttv to use tuner type 2 then lirc wont work as lirc only 
> works if BTTV autodetects the card (or so I hear). Here is the 
> problem, am I correct that in recompiling the kernel I would lose 
> everything? One of the things I like about installing mandrake 9.1 is 
> that alsa gets preinstalled which saves me a lot of time. Now 
> recompiling I would have to reinstall alsa from scratch, correct? I 
> had one plan that I thought might work, if I can find the file 
> bttv-cards.c, the copy that gets installed when I install mandrake, 
> and edit it before it gets installed that should work, I was looking 
> around in the the 3 .iso files but I couldn't find it. Any ideas? Is 
> there any way around a kernel recompile and if I am going to have to 
> recompile should I choose a different distro since I guess I would 
> lose everything mandrake installs anyway?
>
> Any ideas/help?
>
> Thanks again
>
Don't recompile the kernel yet. First, check if you can force bttv to 
use a particular tuner type. There are probably options to do that. I 
don't think it should break lirc -- why would it care if the tuner is 
autodetected or manually set? Perhaps you can manually load the module 
for the correct tuner? Second, if you really think recompiling the 
module is necessary, you can probably do it without recompiling the 
whole kernel. Simply install the kernel source (RPM package 
kernel-source -- use that, since that's the patched Mandrake kernel -- 
'urpmi kernel-source' as root should automagically install it). Then, 
get the bttv drivers from http://bytesex.org/bttv/ and compile them 
manually. This should be a newer version of what's in the kernel - you 
might not even need to patch it to get it to work with your card. Move 
the original gzipped bttv modules out of /lib/modules and copy the new 
ones in there.

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