[mythtv-users] Re: Simple video tests are failing -- what other
tests are helpful?
Justin Gombos
mindfuq at fairfieldi.com
Thu Mar 17 16:36:57 UTC 2005
* 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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