[mythtv-users] Unable to watch TV, display issue

Wed May 28 20:52:35 EDT 2003

thanks for the advice - I'm a little new to a lot of
the things in the mythtv project.  (sorry if I'm a
little to verbose, or am missing something obvious)

I've looked but was unable to figure out how to change
the channel setting.  If anyone know a good doc to
look at for setting up this TV card, let me know. 
I've see a lot of conflicting things.

I tried a few other settings for the tuner and bttv
modules.  Here is what I have in the modules.conf
right now:

alias char-major-81 bttv
options tuner type=2 debug=0
options bttv card=0 autoload=0 radio=0 pll=0
post-install bttv modprobe tuner; modprobe videodev

The picture still looks out of sync.  It looks like I
have the vert and horz sync rate wrong.  I'm not sure
why the MythTV GUI looks fine but the TV does not.  I
tried it connected to a monitor but had the same
results.  Here are the additions to dmesg after I
startx and start watching tv:

0: nvidia: loading NVIDIA Linux x86 nvidia.o Kernel
Module  1.0-4349  Thu Mar 27 19:00:02 PST 2003
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory:
409M
agpgart: unsupported bridge
agpgart: no supported devices found.
0: NVRM: AGPGART: unable to retrieve symbol table

#######################################
Here is the bootup section from dmesg:

Linux video capture interface: v1.00
i2c-core.o: i2c core module
i2c-algo-bit.o: i2c bit algorithm module
bttv: driver version 0.7.96 loaded
bttv: using 4 buffers with 2080k (8320k total) for
capture
bttv: Host bridge is nVidia Corporation nForce CPU
bridge
bttv: Bt8xx card found (0).
bttv0: Bt878 (rev 17) at 01:08.0, irq: 5, latency: 64,
mmio: 0xf7800000
bttv0: detected: ATI TV Wonder/VE [card=64], PCI
subsystem ID is 1002:0003
bttv0: using: BT878( *** UNKNOWN/GENERIC **)
[card=0,insmod option]
i2c-core.o: adapter bt848 #0 registered as adapter 0.
bttv0: using tuner=-1
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
bttv0: registered device video0
bttv0: registered device vbi0
i2c-core.o: driver i2c TV tuner driver registered.
tuner: probing bt848 #0 i2c adapter [id=0x10005]
tuner: chip found @ 0xc0
bttv0: i2c attach [client=Philips NTSC (FI1236 and
compati,ok]
i2c-core.o: client [Philips NTSC (FI1236 and compati]
registered to adapter [bt848 #0](pos. 0).

thanks again,
josh

--- "Joseph A. Caputo" <jcaputo1 at comcast.net> wrote:
> Sounds like your tuner isn't set up correctly...
> either you need to change
> your tuner setup, or fine-tune your channels. 
> Actually, based on your dmesg
> output, it looks like your tuner card is not being
> detected correctly... the
> driver seems to think you've got a PAL tuner.  Take
> a look in the kernel
> documentation for the correct tuner type for your
> card (it's currently using
> '19').  A good test would be to see what kind of
> picture you get with Xawtv.
> 
> Also, looks like your audio isn't set up right...
> either you've
> misconfigured your audio devices, or some other
> process (KDE's artsd, or
> esd) is grabbing the sound card.
> 
> -JAC
> 
> > -----Original Message-----
> > From: mythtv-users-bounces at snowman.net
> > [mailto:mythtv-users-bounces at snowman.net]On Behalf
> Of Joshua Santelli
> > Sent: Wednesday, May 28, 2003 9:43 AM
> > To: mythtv-users at snowman.net
> > Subject: [mythtv-users] Unable to watch TV,
> display issue
> >
> >
> > I might be missing something in the setup or
> > configuration process.  I'm running mythtv 0.8 on
> RH 9
> > (2.4.20-8, compiled locally).  When I start MythTV
> > frontend I can navigate the menu.  The picture,
> > although it runs off the sides a little, is pretty
> > crisp and clear.  When I select "watch TV" I get a
> > mangled, black and white, jittery picture...If I'm
> > lucky  (below is what is spit to the terminal)
> >
> > TIA,
> > josh
> >
> > more hardware details:
> > asus a7n266-vm, AMD 2100+ XP
> > 512 PC 2100, 20 gig + 200 gig West. Dig. HDs (DMA
> > enables on both)
> > ati TV Wonder ve
> > onboard (nvidia geforce 2) VGA out -> webcable
> (using
> > the S-vid output)
> >
> > ==================================
> > [ from terminal when watching tv starts ]
> >
> > connecting to backend server: 192.168.1.4:6543
> > Unable to open mixer: '/dev/mixer'
> > Changing from None to WatchingLiveTV
> > open: No such device
> >
> > [repeats...]
> >
> > open: No such device
> > player: Can't open audio device: /dev/dsp
> > Over/underscanning. V: 0.000000, H: 0.000000,
> XOff: 0,
> > YOff: 0
> > Using XV port 77
> > Changing from WatchingLiveTV to None
> > Changing from None to None
> >

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