[mythtv-users] Re: Simple video tests are failing -- what other tests are helpful?

[MagicITX]

I believe saa7130 is the decoder.  What is your encoder (e.g. ivtv)? 
That is what will be associated with /dev/video0.


On Thu, 17 Mar 2005 09:36:57 -0700, Justin Gombos
<mindfuq at fairfieldi.com> wrote:
> * Mark Matula <mmatula at ratula.net> [2005-03-17 09:38]:
> > On Wed, 16 Mar 2005, Justin Gombos wrote:
> >
> > > The following attempts at a simple device dump fail:
> > >
> > >   sh-3.00$ cat /dev/video0 > simpleTest
> > >   cat: /dev/video0: Invalid argument
> > >
> > >   sh-3.00$ dd if=/dev/video0 of=simpleTest
> > >   dd: reading `/dev/video0': Invalid argument
> > >   0+0 records in
> > >   0+0 records out
> > >   0 bytes transferred in 0.002232 seconds (0 bytes/sec)
> >
> > It doesn't sound like your /dev/video* devices are set up.
> 
> I know, that was my first suspicion, so I checked, then double
> checked.  /dev/video* files are definately there.
> 
>   lrwxrwxrwx  1 root root       6 Mar 13 02:45 /dev/video -> video0
>   crw-rw----  1 root video 81,  0 Feb 18 02:28 /dev/video0
>   crw-rw----  1 root video 81,  1 Feb 18 02:28 /dev/video1
>   crw-rw----  1 root video 81, 10 Feb 18 02:28 /dev/video10
>   crw-rw----  1 root video 81, 11 Feb 18 02:28 /dev/video11
>   [...etc...]
>   crw-rw----  1 root video 81, 62 Feb 18 02:28 /dev/video62
>   crw-rw----  1 root video 81, 63 Feb 18 02:28 /dev/video63
>   crw-rw----  1 root video 81,  7 Feb 18 02:28 /dev/video7
>   crw-rw----  1 root video 81,  8 Feb 18 02:28 /dev/video8
>   crw-rw----  1 root video 81,  9 Feb 18 02:28 /dev/video9
> 
> These results below are interesting.  You can see that the device
> that is bound to a device file gets a different error:
> 
>   root at mythtv:/# cat /dev/video > test_video
>   cat: /dev/video: Invalid argument
> 
>   root at mythtv:/# cat /dev/video0 > test_video
>   cat: /dev/video0: Invalid argument
> 
>   root at mythtv:/# cat /dev/video1 > test_video
>   cat: /dev/video1: No such device
> 
>   root at mythtv:/# cat /dev/video2 > test_video
>   cat: /dev/video2: No such device
> 
> I'm not sure what to try next.  The driver seems to be getting mapped
> to /dev/video0 correctly:
> 
>   root at mythtv:/# dmesg | grep -i saa
> 
>   saa7130/34: v4l2 driver version 0.2.12 loaded
>   saa7130[0]: quirk: PCIPCI_NATOMA
>   saa7130[0]: found at 0000:00:12.0, rev: 1, irq: 11, latency: 208, mmio: 0xf3effc00
>   saa7130[0]: subsystem: 1461:10ff, board: AVerMedia DVD EZMaker [card=33,autodetected]
>   saa7130[0]: board init: gpio is 10000
>   saa7130[0]: i2c eeprom 00: 61 14 ff 10 ff ff ff ff ff ff ff ff ff ff ff ff
>   saa7130[0]: i2c eeprom 10: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>   saa7130[0]: i2c eeprom 20: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>   saa7130[0]: i2c eeprom 30: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>   saa7130[0]: registered device video0 [v4l2]
>   saa7130[0]: registered device vbi0
> 
> 
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> 
> 


-- 
Tim
www.magicitx.com