one tuner of a PVR-500 not returning any data

one tuner of a PVR-500 not returning any data

[Brian J. Murrell]

[-- Attachment #1: Type: text/plain, Size: 723 bytes --]

I have a PVR-500 in a machine here where one of the /dev/video* devices
can successfully be opened and return data while the other can be
opened but returns to data to a read(2).  i.e.:

open("/dev/video3", O_RDONLY|O_LARGEFILE) = 3
dup3(3, 0, 0)                           = 0
close(3)                                = 0
fstat64(0, {st_mode=S_IFCHR|0660, st_rdev=makedev(81, 11), ...}) = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfc7f568) = -1 EINVAL (Invalid argument)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7423000
read(0, 

and the process blocks there.

Any idea why this might be happening?  Kernel is 3.2.0-33-generic which
I believe is 3.2.1 based.

b.


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 261 bytes --]

Re: one tuner of a PVR-500 not returning any data

[Brian J. Murrell]

[-- Attachment #1: Type: text/plain, Size: 926 bytes --]

On 12-11-22 07:33 AM, Brian J. Murrell wrote:
> I have a PVR-500 in a machine here where one of the /dev/video* devices
> can successfully be opened and return data while the other can be
> opened but returns to data to a read(2).  i.e.:
> 
> open("/dev/video3", O_RDONLY|O_LARGEFILE) = 3
> dup3(3, 0, 0)                           = 0
> close(3)                                = 0
> fstat64(0, {st_mode=S_IFCHR|0660, st_rdev=makedev(81, 11), ...}) = 0
> ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfc7f568) = -1 EINVAL (Invalid argument)
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7423000
> read(0, 
> 
> and the process blocks there.

FWIW, simply rmoving and inserting the ivtv module seems to have fixed this.

But really odd (to me at least) that it's just one tuner of a dual-tuner
card.  So like 1 piece of hardware, with only 1 submodule not working.

b.




[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 261 bytes --]