[mythtv-users] ivtv working..but mythfrontend..not

[Shane Hetzel]

Well, a couple of hours have gone by, I'll toss in my analysis of your
situation.

First, I don't know what's going on with IvTV. I get the same "unknown
ioctl" in messages, but the read error with /dev/video0 is beyond me.

What I noticed was your sound module errors. Are you specifically trying to
set up a two sound card system? Because that's what those errors are most
likely from. If you took Jarod's guide too literally, you may have set up
ALSA for both a SB Audigy and the nForce sound devices, both of which which
he has in his test system. If you only have the nForce motherboard audio
present, then you only need the "intel8x0" driver. Your section of
/etc/modules.conf should look something like this:

# ALSA portion
alias char-major-116 snd
alias snd-card-0 snd-intel8x0

# OSS/Free portion
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0
#options snd-pcm-oss dsp_map=1

# OSS/Free portion - card #1
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss

alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss

Notice that card "0" is the only one referenced in any of that. Fix this and
some of your boot messages will go away. Test it with aplay or mpg123 (with
a WAV or MP3 file, respectively).

Sorry if some of this seems redundant. It's been a while since I've read
Jarod's (extremely useful) document. I doubt if that's the root of your
video issue, however it may clear up some issues that you may have in the
(hopefully near) future.

-Shane


----- Original Message ----- 
From: "Dan Hopkins" <dshopkins at earthlink.net>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Wednesday, March 17, 2004 8:16 PM
Subject: [mythtv-users] ivtv working..but mythfrontend..not


> Okay..its been a couple of days..so I'm posting again..
>
>
> I have been able to capture video using
>
> cat /dev/video0 > test.mpg
>
> yet..when fire up myth and goto TV...Im getting this error:
>
> error reading from: /dev/video0
> read: Input/output error
> error reading from: /dev/video0
> read: Input/output error
> error reading from: /dev/video0
> read: Input/output error
> error reading from: /dev/video0
> read: Input/output error
>
> thoughts??
>
> from my messages log I see this..(from boot up)
>
> Mar 14 14:50:09 localhost kernel: ivtv: ivtv-api.c: unknown ioctl
0x803c7601
> Mar 14 14:50:09 localhost modprobe: modprobe: Can't locate module
> char-major-81-1
> Mar 14 14:50:19 localhost gdm(pam_unix)[3546]: session opened for user
root
> by (uid=0)
> Mar 14 14:50:31 localhost kernel: intel8x0_measure_ac97_clock: measured
> 49781 usecs
> Mar 14 14:50:31 localhost kernel: intel8x0: clocking to 47473
> Mar 14 14:50:31 localhost modprobe: modprobe: Can't locate module
> sound-slot-1
> Mar 14 14:50:31 localhost modprobe: modprobe: Can't locate module
> sound-service-1-0
> Mar 14 14:50:31 localhost modprobe: modprobe: Can't locate module
> sound-slot-1
> Mar 14 14:50:31 localhost modprobe: modprobe: Can't locate module
> sound-service-1-0
>
>
> any suggestions on what I could I have screwed up (I'm assuming it has to
be
> a myth config issue)
>
> many humble thanx :)
>
>
>
> ps...
>
> pvr-350, fedora core 1, nforce2 (only using pvr-350 for video out), been
> following Jarods greatly appreciated how-to :)
>
>


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