[mythtv-users] HDPVR cat video0 input output error. Everything seems in place

Nick Rout nick.rout at gmail.com
Tue Oct 30 21:38:28 UTC 2012


On Oct 31, 2012 10:23 AM, "Mark" <markhsa at gmail.com> wrote:
>
> I haven't seen this error for a while and am not finding much in googling
it for assistance.
> I am wondering if this is a module problem in the kernel as it doesnt
make much sense.
>
> New Mythbox on F17
> I know the HDPVR works as its fine on another F17 ( old ) box.
>
> Problem: cat /dev/video0 > /tmp/vid.avi
>
> Info:
> ls -al /dev/video0
> crw-rw----+ 1 root video 81, 0 Oct 30 15:19 /dev/video0
>
> lsmod |grep hdpvr
> hdpvr                  32337  0
> v4l2_common            15099  1 hdpvr
> videodev              119976  2 hdpvr,v4l2_common
> i2c_core               38314  5 i2c_i801,hdpvr,nvidia,v4l2_common,videodev
>
> hdpvr 2-1.6:1.0: firmware version 0x12 dated May  7 2009 23:27:43
> [80987.350493] hdpvr 2-1.6:1.0: device now attached to video0
> [80987.350519] usbcore: registered new interface driver hdpvr
>
> So it all looks good.  I cant cat the video device as root or anyone in
the video group.
>
> Any ideas on what else I can check?

Something else accessing /dev/video0?

lsof|grep video0

I think the fuser commandcan be used too. I never got the hang of that
though.

>
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