[pvrusb2] PVR USB2 - how to check if it's dead? [SOLVED]

[Helmut Jarausch]

On 12/19/2012 04:40:08 PM, Mike Isely wrote:
> Do you have mplayer laying around somewhere?  I think you need to try
> the scenario that I know should always work.  Then we can expand out
> from that:
> 
> 1. Plug in the device.
> 
> 2. Attach a video source to the composite (or s-video) input.  For
> example a DVD player...
> 
> 3. Use the sysfs interface to ensure that the input is selected as
> composite (or s-video if that's what you're using).
> 
> 4. Now do: "cat /dev/video0 >/tmp/foo.mpg", wait about 10 seconds then
> interrupt it.  (Note: If you have multiple V4L2 devices attached then  
> it
> might /dev/video1 or something similar instead of /dev/video0.)
> 
> 5. Is /tmp/foo.mpg non-zero in length?  Does "mplayer /tmp/foo.mpg"
> work?
> 
> That exact scenario I've done countless times in the past.  If it  
> works
> for you as well, then we can start throwing in other things until it
> breaks, and then see what's different.  If it doesn't work for you,  
> then
> there's either something wrong in your setup (which right now seems
> unlikely) or there's new breakage that I have to investigate.

Hi Mike,

that was my testing all the time.

Now, I've traced xawtv step for step.
The single control which is needed by my device to even produce a  
single byte
of output on /dev/video0 is

v4l2-ctl -s "pal"

i.e. setting the video standard to PAL.

Is there any means to set this without v4l2-ctl ?

Here, I do not have
/sys/class/pvrusb2/sn-8039400/ctl_video_standard

only

bus_info_str
ctl_audio_bitrate
ctl_audio_crc
ctl_audio_emphasis
ctl_audio_layer
ctl_audio_mode
ctl_audio_modes_present
ctl_balance
ctl_bass
ctl_brightness
ctl_channel
ctl_contrast
ctl_cropcap_bounds_height
ctl_cropcap_bounds_left
ctl_cropcap_bounds_top
ctl_cropcap_bounds_width
ctl_cropcap_pixel_denominator
ctl_cropcap_pixel_numerator
ctl_crop_height
ctl_crop_left
ctl_crop_top
ctl_crop_width
ctl_freq_table_channel
ctl_freq_table_value
ctl_frequency
ctl_hue
ctl_input
ctl_master_state
ctl_mpeg_audio_mode
ctl_mpeg_audio_mode_extension
ctl_mute
ctl_resolution_hor
ctl_resolution_ver
ctl_saturation
ctl_signal_present
ctl_srate
ctl_streaming_enabled
ctl_stream_type
ctl_treble
ctl_usb_speed
ctl_video_aspect
ctl_video_b_frames
ctl_video_bitrate
ctl_video_bitrate_mode
ctl_video_bitrate_peak
ctl_video_chroma_median_filter_bottom
ctl_video_chroma_median_filter_top
ctl_video_chroma_spatial_filter_type
ctl_video_gop_closure
ctl_video_gop_size
ctl_video_luma_median_filter_bottom
ctl_video_luma_median_filter_top
ctl_video_luma_spatial_filter_type
ctl_video_median_filter_type
ctl_video_spatial_filter
ctl_video_spatial_filter_mode
ctl_video_standard_mask_active
ctl_video_standard_mask_available
ctl_video_standard_mask_detected
ctl_video_temporal_decimation
ctl_video_temporal_filter
ctl_video_temporal_filter_mode
ctl_volume
device
device_hardware_description
device_hardware_type
power
subsystem
uevent
unit_number
v4l_minor_number
v4l_radio_minor_number


Many thanks,
Helmut.