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

[Mark]

On 2012-10-30 3:42 PM, Mark Greenwood wrote:
> On 30 Oct 2012, at 21:23, Mark 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
> Well, it's a guess but that + on the end of the attributes means it has an ACL (Access Control List) associated with it - it's an extension to the standard Linux permissions. Doing
>
> getfacl /dev/video0 will show you the true permissions.
>
> To determine whether it's an ACL problem you can remove the ACL with setfacl -b.
>
> Mark
>
>> 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?
>>
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I thought this could be firmware related, so I upgrade the HDPVR to the 
latest from Haupaugge.

Still doing the same thing.  Also, went one Kernel back, same.
[root at beast ~]# cat /dev/video0 > /tmp/outvid
cat: /dev/video0: Input/output error

Ideas?