[mythtv] Tuner trouble...

[Chris Lack]

On Monday 27 January 2003 07:11 am, John wrote:
> Hi all,
>
> Well, I've probably got 60+ hours into trying to get my Matrox G200 card
> working and am very close but not "quite" there!  Maybe someone out there
> can help please?

I just got mine last week.  I still haven't decided if it was worth it yet.  
Software playback of MJPEG takes serious cpu time and I've lost decent 3d 
acceleration for ePSXe and PCSX.  The TV-out is better than with my GF2MX 
though, and soon I plan on getting the marvel and my bt878 to cooperate with 
each other offering a fair amount of recording versatility.

>
> What should my Matrox G200 TV card be detected as in BTTV for "tuner" and
> "card" ??
>
> Also, is my G200 supposed to be able to be both a Tuner, and also output
> the video simultaneously?  It seems like I can either get the fb0 to work
> and my output is "copied" to the video out, OR I can get the /dev/video0 to
> work - and hence mythtv finds it and is happy, but not both.  Is that
> right? (Note: the card worked fine in Windows).
>
>  In case it helps, my modules.conf, syslog, dmesg, and XF86Config-4 files
> are
> attached.  Note, I tried the bttv option pll=0, 1, and 2 and that didn't
> help, and in xawtv, hitting right-arrow to walk through the frequencies
> didn't
> work either.
>

Yes, it all works at the same time.  It sounds like you're trying to go 
through bttv to get at the marvel capture functions though.  You should not 
load the bttv kernel module unless you have a bttv card.  Currently you 
usually have to build bttv while compiling the kernel to get at a lot of 
miscellanious modules like tuner.o or msp3400.o.

Here's what modules I load and the order in which I load them.

mga /* DRM driver for remembering what prehistoric 3d acceleration was like */
i2c-algo-ks
msp3400 /* I'm not sure if the bttv msp3400 will work, I use the one from 
mgavideo */
ks0127
tuner type=2 /* if you're using mgavideo 1.1b the bttv tuner.o will work fine 
*/
videodev
mga_core vdo_enable=0 /* vdo_enable=1 will cause your tv to lose sync whenever 
you do something related to capture */
mgagrab
mgacap
mgavideo default_norm=1
zr36060
i33
mgajpg
i2c-matroxfb
matroxfb_maven

After this I do the framebuffer swap and maven register adjustments.  If 
you're using your TV don't load the maven.o from mgavideo, in fact loading 
anything not listed here won't gain you anything.  You also have no need for 
the matroxfb_crtc2 that's built along with the matroxfb_maven.  For anyone 
using a G400 this will probably be a little different for you, but I know the 
above should work with a G200.

For mplayer try -vo xvidix:mga_vid.so . . . I find that it works better than 
mplayer's own -vo xmga driver which requires a kernel module to be loaded.