Hi there.
I’m newly registered (though being here for a long time) because I cannot (after hours of searching/reading) find the issue-- so Please Help . 
My Setup:
- Khadas Vim 1 (S905x)
- CoreElec (9.0.3)
- Hyperion.NG (9.1.101)
- Logilink VG0001A (recognized as Fushicai USBTV007 Video Grabber [EasyCAP])
other addons installed: (though I don’t think this info is needed)
- TvHeadend (server&client on kvim)
- Panasonic 4k TV
- Onkyo
PROBLEM:
USB Grabber does not bring up LED lights at all
USB-Grabber itself could be defective (and cannot be tested, since no Windows PC at hand)
The Grabber is detected as /DEV/VIDEO10
Hyperion.NG works like a charm for 4K-HDR & TVheadend, (priority:250) but ceases as soon as I enable “Enable USB capture” (priority: 200).
After that no analog input (old wii via AV-cable) seems to bring the LED back on.
Neither DEVICE:AUTO nor DEVICE: /dev/video10 nor DEVICE: ‘/dev/video10’
maybe the V2L always tries to reference to VIDEO0 instead of VIDEO10 ???
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CoreELEC: ~/.kodi/temp # v4l2-ctl --list-devices*
amlvideo (amlvideo-000):
/dev/video10
Failed to open /dev/video0: No such file or directory
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please help - additional info can be posted upon request
THANK YOU very much in advance 