error while loading shared libraries: libopencv_videoio.so.4.5d

If you had ‘ERROR: Impossible to reset the control’ message, give the DEBUG info displayed

DEBUG:

Ouput of linux-enable-ir-emitter -v -d /dev/videoX configure

configure command output

**I am using video2 for this command**
/usr/lib/linux-enable-ir-emitter/driver/driver-generator: error while loading shared libraries: libopencv_videoio.so.4.5d: cannot open shared object file: No such file or directory
ERROR: The configuration has failed.

Output of v4l2-ctl --list-devices

Integrated Camera: Integrated C (usb-0000:00:14.0-7):
	/dev/video0
	/dev/video1
	/dev/video2
	/dev/video3

Ouput of v4l2-ctl -d /dev/videoX --list-formats-ext

v4l2 device output

**I am using video2 for this command**
ioctl: VIDIOC_ENUM_FMT
	Type: Video Capture

	[0]: 'GREY' (8-bit Greyscale)
		Size: Discrete 360x360
			Interval: Discrete 0.067s (15.000 fps)
		Size: Discrete 640x360
			Interval: Discrete 0.033s (30.000 fps)

Additional info

• Distro: Ubuntu
• Version: Focal Fossa (20.04 LTS)
• Version of linux-enable-ir-emitter: 4.2.1
• How did you install linux-enable-ir-emitter: PPA

[EmixamPP]

From what I understand, I guess that opencv is waiting for access to /dev/video2, which freezes the process. The emitter works because it just found the right driver, but because opencv is stuck, it can’t ask the user if the driver works.

I will manually create the config file for you, in order to bypass test and the file generation. Please create the file /etc/linux-enable-ir-emitter/video2, which exactly contains :

device=/dev/video2
unit=10
selector=6
size=9
control0=1
control1=3
control2=2
control3=0
control4=0
control5=0
control6=0
control7=0
control8=0

Then execute sudo linux-enable-ir-emitter boot enable. After that, everything should work like a charm !

But I don’t understand why opencv works 6 times, but not the 7th time. For many reasons, I would like to use another library than opencv.

[GeoRCode]

I’m gonna write for you the steps I made in order for you to make conclusions and stuff:

1. I opened a terminal and installed the bash script using the “For other distro:” steps found in the README.md
2. I continued by opening a new terminal and wrote sudo linux-enable-ir-emitter configure
3. It showed me this (as expected):

INFO: Ensure to not use the camera during the execution.
INFO: Warning to do not kill the process !
Is the ir emitter flashing (not just turn on) ? Yes/No ?

1. I answered ‘no’ to the question
2. Then it showed me this:

can't get debug descriptor: Resource temporarily unavailable
ERROR: Impossible to reset the control.
INFO: Please keep this debug in case of issue :
DEBUG: unit: 9, selector: 10, control: 0 8 0 187 187 187 187 187
Is the ir emitter flashing (not just turn on) ? Yes/No ?

1. I continued answering ‘no’ to the question 6 more times
2. Then, no more questions appeared on console and the emitter actually began to flash
3. I let it run for 5-6 hours with nothing new on the console log, then killed the process
4. I searched for anything created on the supposed driver folder (/etc/linux-enable-ir-emitter) but it was empty
5. I searched in the other folders created by the installation in the whole system but there was nothing new
6. I tested the camera + emitter using ffplay /dev/video2 and/or sudo howdy test. It worked as intended
7. I powered off the whole pc. Then I powered on again, went to Windows, on the lock screen I performed a reboot and then I went to Ubuntu
8. The camera works, the emitter doesn’t

Hopefully this help you understand my process