Kernel Boot Parameters

Troubleshooting
1

Hi all

Short version:
Can you tell me please how to activate “Kernel Boot Parameters” on a Asus Tinker Board?
On a RAPI i need to edit /boot/cmdline.txt, but this does not work an a TinkerBoard.

Long version:
I try to realize a Webcam-Project. One or tow USB-Cams on a RAPI or TB. The problem is, that the RAPI seems to have a very bad USB speed.
So i have sporadically artefacts and random failures in the picture. This triggers the “motion” and generates an event.
Because of this problem, i tried the same on a TB. But i don’t know why, the cam shows only artefacts and a very bad picture (not usable).
I think i need to activate the “quirks”. The problem is, that the module “uvcvideo” is built in the kernel. So setting module-parameters with modprobe is not possible. I need to set “uvcvideo.quirks=128” by a kernel parameter. Maybe this solves my problem with the bad picture (i hope).

Thx and greetings.

2

Hi,

The only boot options for ASUS TB are in:

/boot/hw_intf.conf

They should accept kernel command line options, however, untested.

3

Hi
Thx for the answer, but this does not work.
I found the solution:

nano /boot/extlinux/extlinux.conf

But this does not solve my problem with the webcams. The picture is still horrible! :cry:

Maybe any ideas about debugging this issue? :question:

4

Check the log files for the program your using (eg: Motion), and, USB for any errors:

dmesg | grep usb
5

Absolutely no usefull informations. :cry:

------------------------
cap.driver: "uvcvideo"
cap.card: "HP Webcam [2 MP Macro]"
cap.bus_info: "usb-ff540000.usb-1.2"
cap.capabilities=0x84200001
------------------------
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_get_capability: - VIDEO_CAPTURE
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_get_capability: - STREAMING
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_select_input: name = "Camera 1", type 0x00000002, status 00000000
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_select_input: - CAMERA
[1:ml1] [WRN] [VID] [Aug 18 16:49:56] v4l2_select_input: Device doesn't support VIDIOC_G_STD
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_do_set_pix_format: Testing palette YUYV (1024x768)
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_do_set_pix_format: Using palette YUYV (1024x768) bytesperlines 2048 sizeimage 1572864 colorspace 00000008
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: found control 0x00980900, "Brightness", range -64,64 
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: 	"Brightness", default -8193, current -51
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: found control 0x00980901, "Contrast", range 0,64 
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: 	"Contrast", default 57343, current 33
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: found control 0x00980902, "Saturation", range 0,128 
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: 	"Saturation", default 57343, current 62
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: found control 0x00980903, "Hue", range -40,40 
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: 	"Hue", default -8193, current 0
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: found control 0x00980918, "Power Line Frequency", range 0,2 
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: 	"Power Line Frequency", default 2, current 2
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: found control 0x00980910, "Gamma", range 72,500 
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_scan_controls: 	"Gamma", default 57343, current 100
[1:ml1] [DBG] [VID] [Aug 18 16:49:56] v4l2_set_mmap: mmap information: frames=4
[1:ml1] [DBG] [VID] [Aug 18 16:49:56] v4l2_set_mmap: 0 length=1572864 Address (b0b80000)
[1:ml1] [DBG] [VID] [Aug 18 16:49:56] v4l2_set_mmap: 1 length=1572864 Address (b0a00000)
[1:ml1] [DBG] [VID] [Aug 18 16:49:56] v4l2_set_mmap: 2 length=1572864 Address (b0880000)
[1:ml1] [DBG] [VID] [Aug 18 16:49:56] v4l2_set_mmap: 3 length=1572864 Address (b0700000)
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] vid_v4lx_start: Using V4L2
[1:ml1] [NTC] [ALL] [Aug 18 16:49:56] image_ring_resize: Resizing pre_capture buffer to 1 items
[1:ml1] [INF] [ALL] [Aug 18 16:49:56] motion_init: Maskfile "/etc/motion/cam1-mask.pgm" loaded.
[1:ml1] [NTC] [STR] [Aug 18 16:49:56] http_bindsock: listening on any IPv4 address port 8081
[1:ml1] [NTC] [ALL] [Aug 18 16:49:56] motion_init: Started motion-stream server on port 8081 (auth Disabled)
[1:ml1] [NTC] [ALL] [Aug 18 16:49:56] image_ring_resize: Resizing pre_capture buffer to 7 items
[1:ml1] [NTC] [VID] [Aug 18 16:49:56] v4l2_set_control: setting control "Brightness" to -51 (ret 0 ) 
[1:ml1] [DBG] [VID] [Aug 18 16:49:56] v4l2_next: 1) vid_source->pframe -1
[0:motion] [ERR] [ALL] [Aug 18 16:50:26] main: Thread 1 - Watchdog timeout, trying to do a graceful restart
[0:motion] [ERR] [ALL] [Aug 18 16:51:26] main: Thread 1 - Watchdog timeout, did NOT restart graceful,killing it!
[0:motion] [ERR] [ALL] [Aug 18 16:51:28] main: cleaning Thread 1
[0:motion] [NTC] [STR] [Aug 18 16:51:28] stream_stop: Closing motion-stream listen socket & active motion-stream sockets
[0:motion] [NTC] [STR] [Aug 18 16:51:28] stream_stop: Closed motion-stream listen socket & active motion-stream sockets
[0:motion] [INF] [ALL] [Aug 18 16:51:28] motion_cleanup: Calling vid_close() from motion_cleanup
[0:motion] [NTC] [VID] [Aug 18 16:51:28] vid_close: Closing video device /dev/video0
[0:motion] [NTC] [ALL] [Aug 18 16:51:29] main: Motion thread 1 restart
[1:ml1] [NTC] [ALL] [Aug 18 16:51:29] motion_init: Camera 1 started: motion detection Enabled
[1:ml1] [NTC] [VID] [Aug 18 16:51:29] vid_v4lx_start: Using videodevice /dev/video0 and input -1
[1:ml1] [NTC] [VID] [Aug 18 16:51:29] v4l2_get_capability:

dmesg shows this:

[  546.586316] uvcvideo: Failed to resubmit video URB (-1).
[ 4798.038734] uvcvideo: Failed to resubmit video URB (-1).
[ 6416.963986] uvcvideo: Failed to resubmit video URB (-1).
[ 9125.676965] uvcvideo: Failed to resubmit video URB (-1).
[10230.335857] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
[10235.335866] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
[10249.545869] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
[10254.545869] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
[10259.645849] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
[11599.103288] uvcvideo: Failed to resubmit video URB (-1).

Pictures looks like attachment. → horrible! :roll_eyes:

pic.png
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