uvcvideo is loaded but /dev/video0 doesn't exist
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My webcam worked like a charm until I ran a simple python code to take photo. I ran it with root permission by sudo python myapp.py. The program crashed. Then I ran sudo killall -9 python.
From that time, I lost my webcam. If I run my program, I get this error: VIDEOIO ERROR: V4L: can't find camera device. Cheese cann't find device as well.
I google my issue and I find some pages saying that I should re-enable uvcvideo module. I've done it by sudo modprobe -r uvcvideo && sudo modprobe uvcvideo but the problem isn't solved.
This is the result of some of my commands:
$ lsmod | grep uvc
uvcvideo 86016 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 videobuf2_v4l2,uvcvideo
videodev 184320 3
videobuf2_core,videobuf2_v4l2,uvcvideo
media 40960 2 videodev,uvcvideo
$ sudo v4l2-ctl --list-devices
Failed to open /dev/video0: No such file or directory
I should also notice that if I restart the computer I get nothing from lsmod | grep uvc until I run sudo modprobe uvcvideo again.
How should I solve the issue?
drivers kernel webcam uvc
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
add a comment |
My webcam worked like a charm until I ran a simple python code to take photo. I ran it with root permission by sudo python myapp.py. The program crashed. Then I ran sudo killall -9 python.
From that time, I lost my webcam. If I run my program, I get this error: VIDEOIO ERROR: V4L: can't find camera device. Cheese cann't find device as well.
I google my issue and I find some pages saying that I should re-enable uvcvideo module. I've done it by sudo modprobe -r uvcvideo && sudo modprobe uvcvideo but the problem isn't solved.
This is the result of some of my commands:
$ lsmod | grep uvc
uvcvideo 86016 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 videobuf2_v4l2,uvcvideo
videodev 184320 3
videobuf2_core,videobuf2_v4l2,uvcvideo
media 40960 2 videodev,uvcvideo
$ sudo v4l2-ctl --list-devices
Failed to open /dev/video0: No such file or directory
I should also notice that if I restart the computer I get nothing from lsmod | grep uvc until I run sudo modprobe uvcvideo again.
How should I solve the issue?
drivers kernel webcam uvc
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
I have the same issue Ubuntu 18.04.1, theudo modprobe uvcvideodoes not survive a restart when I issuelsmod | grep uvc. A solution is needed, please.
– doctorate
Dec 22 '18 at 6:36
add a comment |
My webcam worked like a charm until I ran a simple python code to take photo. I ran it with root permission by sudo python myapp.py. The program crashed. Then I ran sudo killall -9 python.
From that time, I lost my webcam. If I run my program, I get this error: VIDEOIO ERROR: V4L: can't find camera device. Cheese cann't find device as well.
I google my issue and I find some pages saying that I should re-enable uvcvideo module. I've done it by sudo modprobe -r uvcvideo && sudo modprobe uvcvideo but the problem isn't solved.
This is the result of some of my commands:
$ lsmod | grep uvc
uvcvideo 86016 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 videobuf2_v4l2,uvcvideo
videodev 184320 3
videobuf2_core,videobuf2_v4l2,uvcvideo
media 40960 2 videodev,uvcvideo
$ sudo v4l2-ctl --list-devices
Failed to open /dev/video0: No such file or directory
I should also notice that if I restart the computer I get nothing from lsmod | grep uvc until I run sudo modprobe uvcvideo again.
How should I solve the issue?
drivers kernel webcam uvc
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
My webcam worked like a charm until I ran a simple python code to take photo. I ran it with root permission by sudo python myapp.py. The program crashed. Then I ran sudo killall -9 python.
From that time, I lost my webcam. If I run my program, I get this error: VIDEOIO ERROR: V4L: can't find camera device. Cheese cann't find device as well.
I google my issue and I find some pages saying that I should re-enable uvcvideo module. I've done it by sudo modprobe -r uvcvideo && sudo modprobe uvcvideo but the problem isn't solved.
This is the result of some of my commands:
$ lsmod | grep uvc
uvcvideo 86016 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 videobuf2_v4l2,uvcvideo
videodev 184320 3
videobuf2_core,videobuf2_v4l2,uvcvideo
media 40960 2 videodev,uvcvideo
$ sudo v4l2-ctl --list-devices
Failed to open /dev/video0: No such file or directory
I should also notice that if I restart the computer I get nothing from lsmod | grep uvc until I run sudo modprobe uvcvideo again.
How should I solve the issue?
drivers kernel webcam uvc
drivers kernel webcam uvc
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
edited Dec 20 '18 at 21:55
vahidreza
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
asked Dec 20 '18 at 15:59
vahidrezavahidreza
1063
1063
I have the same issue Ubuntu 18.04.1, theudo modprobe uvcvideodoes not survive a restart when I issuelsmod | grep uvc. A solution is needed, please.
– doctorate
Dec 22 '18 at 6:36
add a comment |
I have the same issue Ubuntu 18.04.1, theudo modprobe uvcvideodoes not survive a restart when I issuelsmod | grep uvc. A solution is needed, please.
– doctorate
Dec 22 '18 at 6:36
I have the same issue Ubuntu 18.04.1, the
udo modprobe uvcvideo does not survive a restart when I issue lsmod | grep uvc. A solution is needed, please.– doctorate
Dec 22 '18 at 6:36
I have the same issue Ubuntu 18.04.1, the
udo modprobe uvcvideo does not survive a restart when I issue lsmod | grep uvc. A solution is needed, please.– doctorate
Dec 22 '18 at 6:36
add a comment |
2 Answers
2
active
oldest
votes
After a daunting day, finally I found out that I have to reinstall linux-image. So I started synaptic and reinstalled linux-image-{my kernel version}-generic and linux-image-generic and restart the computer. And now, I have a webcam!
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
it didn't work for me. I still can't get the output oflsmod | grep uvcsurvive a restart.
– doctorate
Dec 22 '18 at 6:47
add a comment |
For my case, I found there is a file called uvcvideo-blacklist.conf in /etc/modprobe.d. It will prevent uvcvideo module to be loaded automatically when booting. Commented out the only line "blacklist uvcvideo" in this file will get uvcvideo been automatically loaded at start up.
answered 6 mins ago
L3w1sL3w1s
1
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L3w1s is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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2 Answers
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2 Answers
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After a daunting day, finally I found out that I have to reinstall linux-image. So I started synaptic and reinstalled linux-image-{my kernel version}-generic and linux-image-generic and restart the computer. And now, I have a webcam!
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
it didn't work for me. I still can't get the output oflsmod | grep uvcsurvive a restart.
– doctorate
Dec 22 '18 at 6:47
add a comment |
After a daunting day, finally I found out that I have to reinstall linux-image. So I started synaptic and reinstalled linux-image-{my kernel version}-generic and linux-image-generic and restart the computer. And now, I have a webcam!
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
it didn't work for me. I still can't get the output oflsmod | grep uvcsurvive a restart.
– doctorate
Dec 22 '18 at 6:47
add a comment |
After a daunting day, finally I found out that I have to reinstall linux-image. So I started synaptic and reinstalled linux-image-{my kernel version}-generic and linux-image-generic and restart the computer. And now, I have a webcam!
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
After a daunting day, finally I found out that I have to reinstall linux-image. So I started synaptic and reinstalled linux-image-{my kernel version}-generic and linux-image-generic and restart the computer. And now, I have a webcam!
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
answered Dec 21 '18 at 14:41
vahidrezavahidreza
1063
1063
it didn't work for me. I still can't get the output oflsmod | grep uvcsurvive a restart.
– doctorate
Dec 22 '18 at 6:47
add a comment |
it didn't work for me. I still can't get the output oflsmod | grep uvcsurvive a restart.
– doctorate
Dec 22 '18 at 6:47
it didn't work for me. I still can't get the output of
lsmod | grep uvc survive a restart.– doctorate
Dec 22 '18 at 6:47
it didn't work for me. I still can't get the output of
lsmod | grep uvc survive a restart.– doctorate
Dec 22 '18 at 6:47
add a comment |
For my case, I found there is a file called uvcvideo-blacklist.conf in /etc/modprobe.d. It will prevent uvcvideo module to be loaded automatically when booting. Commented out the only line "blacklist uvcvideo" in this file will get uvcvideo been automatically loaded at start up.
answered 6 mins ago
L3w1sL3w1s
1
New contributor
L3w1s is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
For my case, I found there is a file called uvcvideo-blacklist.conf in /etc/modprobe.d. It will prevent uvcvideo module to be loaded automatically when booting. Commented out the only line "blacklist uvcvideo" in this file will get uvcvideo been automatically loaded at start up.
answered 6 mins ago
L3w1sL3w1s
1
New contributor
L3w1s is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
For my case, I found there is a file called uvcvideo-blacklist.conf in /etc/modprobe.d. It will prevent uvcvideo module to be loaded automatically when booting. Commented out the only line "blacklist uvcvideo" in this file will get uvcvideo been automatically loaded at start up.
answered 6 mins ago
L3w1sL3w1s
1
New contributor
L3w1s is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
For my case, I found there is a file called uvcvideo-blacklist.conf in /etc/modprobe.d. It will prevent uvcvideo module to be loaded automatically when booting. Commented out the only line "blacklist uvcvideo" in this file will get uvcvideo been automatically loaded at start up.
answered 6 mins ago
L3w1sL3w1s
1
New contributor
L3w1s is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 6 mins ago
L3w1sL3w1s
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answered 6 mins ago
L3w1sL3w1s
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answered 6 mins ago
L3w1sL3w1s
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I have the same issue Ubuntu 18.04.1, the
udo modprobe uvcvideodoes not survive a restart when I issuelsmod | grep uvc. A solution is needed, please.– doctorate
Dec 22 '18 at 6:36