VIDEOIO ERROR:V4L: Can't open camera by index 0
On a Intel NUC, I have loaded Ubuntu 16.04. I have disabled the desktop module by making changes to /etc/default/grub. The machine boots in text mode. I have a python program that uses Opencv (Opencv4.0.0 is currently installed) and imutils library and a webcam. I have created bash script named runBot.sh that runs the python program. The bash script contains the following:
#!/bin/bash
python3 /home/mycomp/rfd/liveCamObject.py
When I run it in the terminal window using
sh runBot.sh
it runs without a problem. However I am trying to run the program on reboot, hence I have set a cron job which is as follows:
@reboot /home/mycomp/runBot.sh
Both the sh file and the .py file has sudo rwx rights.
When I reboot the machine, on boot I get the following error:
error: no video mode activated
and after few seconds it boots normally and waits for login and password. The bash script at reboot gets triggered but throws the error:
VIDEOIO ERROR:V4L: can't open camera by index 0.
Since the runBot.sh runs from terminal and not with crontab, I tried changing the ownership from mycomp:mycomp to root:mycomp, it didn't help. I read that providing
sudo modprobe bcm2835-v4l2
and I tried various combinations v4_l_2, V4_L_2, etc...I always got an error
FATAL: Module `bcm2835-v4l2` not found in directory `/lib/modules/4.15.0-43-generic`
How do I enable the video camera on boot?
command-line bash cron webcam
asked 4 hours ago
ApricotApricot
1083
add a comment |
On a Intel NUC, I have loaded Ubuntu 16.04. I have disabled the desktop module by making changes to /etc/default/grub. The machine boots in text mode. I have a python program that uses Opencv (Opencv4.0.0 is currently installed) and imutils library and a webcam. I have created bash script named runBot.sh that runs the python program. The bash script contains the following:
#!/bin/bash
python3 /home/mycomp/rfd/liveCamObject.py
When I run it in the terminal window using
sh runBot.sh
it runs without a problem. However I am trying to run the program on reboot, hence I have set a cron job which is as follows:
@reboot /home/mycomp/runBot.sh
Both the sh file and the .py file has sudo rwx rights.
When I reboot the machine, on boot I get the following error:
error: no video mode activated
and after few seconds it boots normally and waits for login and password. The bash script at reboot gets triggered but throws the error:
VIDEOIO ERROR:V4L: can't open camera by index 0.
Since the runBot.sh runs from terminal and not with crontab, I tried changing the ownership from mycomp:mycomp to root:mycomp, it didn't help. I read that providing
sudo modprobe bcm2835-v4l2
and I tried various combinations v4_l_2, V4_L_2, etc...I always got an error
FATAL: Module `bcm2835-v4l2` not found in directory `/lib/modules/4.15.0-43-generic`
How do I enable the video camera on boot?
command-line bash cron webcam
asked 4 hours ago
ApricotApricot
1083
add a comment |
On a Intel NUC, I have loaded Ubuntu 16.04. I have disabled the desktop module by making changes to /etc/default/grub. The machine boots in text mode. I have a python program that uses Opencv (Opencv4.0.0 is currently installed) and imutils library and a webcam. I have created bash script named runBot.sh that runs the python program. The bash script contains the following:
#!/bin/bash
python3 /home/mycomp/rfd/liveCamObject.py
When I run it in the terminal window using
sh runBot.sh
it runs without a problem. However I am trying to run the program on reboot, hence I have set a cron job which is as follows:
@reboot /home/mycomp/runBot.sh
Both the sh file and the .py file has sudo rwx rights.
When I reboot the machine, on boot I get the following error:
error: no video mode activated
and after few seconds it boots normally and waits for login and password. The bash script at reboot gets triggered but throws the error:
VIDEOIO ERROR:V4L: can't open camera by index 0.
Since the runBot.sh runs from terminal and not with crontab, I tried changing the ownership from mycomp:mycomp to root:mycomp, it didn't help. I read that providing
sudo modprobe bcm2835-v4l2
and I tried various combinations v4_l_2, V4_L_2, etc...I always got an error
FATAL: Module `bcm2835-v4l2` not found in directory `/lib/modules/4.15.0-43-generic`
How do I enable the video camera on boot?
command-line bash cron webcam
asked 4 hours ago
ApricotApricot
1083
On a Intel NUC, I have loaded Ubuntu 16.04. I have disabled the desktop module by making changes to /etc/default/grub. The machine boots in text mode. I have a python program that uses Opencv (Opencv4.0.0 is currently installed) and imutils library and a webcam. I have created bash script named runBot.sh that runs the python program. The bash script contains the following:
#!/bin/bash
python3 /home/mycomp/rfd/liveCamObject.py
When I run it in the terminal window using
sh runBot.sh
it runs without a problem. However I am trying to run the program on reboot, hence I have set a cron job which is as follows:
@reboot /home/mycomp/runBot.sh
Both the sh file and the .py file has sudo rwx rights.
When I reboot the machine, on boot I get the following error:
error: no video mode activated
and after few seconds it boots normally and waits for login and password. The bash script at reboot gets triggered but throws the error:
VIDEOIO ERROR:V4L: can't open camera by index 0.
Since the runBot.sh runs from terminal and not with crontab, I tried changing the ownership from mycomp:mycomp to root:mycomp, it didn't help. I read that providing
sudo modprobe bcm2835-v4l2
and I tried various combinations v4_l_2, V4_L_2, etc...I always got an error
FATAL: Module `bcm2835-v4l2` not found in directory `/lib/modules/4.15.0-43-generic`
How do I enable the video camera on boot?
command-line bash cron webcam
command-line bash cron webcam
asked 4 hours ago
ApricotApricot
1083
asked 4 hours ago
ApricotApricot
1083
asked 4 hours ago
ApricotApricot
1083
asked 4 hours ago
ApricotApricot
1083
asked 4 hours ago
ApricotApricot
1083
1083
add a comment |
add a comment |
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