chrome stopped detecting Rasberry pi camera

How did you install the browser? If you used a snap then it may need to grant the application access to the webcam. Have you checked the permissions in the browser to allow it to use the webcam?

Hi actionparsnip ,

Thanks for your response . Yes I did it via snap and have checked both . In SNAP under the chromium app permission the Camera permission is given .In Chromium browser settings I have enabled the camera and for the online website I am using for testing I gave the Camera permission under site settings . Infact these were initial trouble shooting steps I did .

Still it doesnt works :(.

With regards,
Saurabh

Hello Experts,

Any pointers here !!. Any place to check the logs as why the camera is not getting detected in chromium browser ?

Also can anyone confirm if the they are able to access Raspberry pi camera using chromium browser with Ubuntu Desktop 20.10 installed in Rasberry Pi 4 . That would at least indicate I am missing something and it is supported .

Thanks in advance.

With Regards,
Saurabh Kumar Pandey

Hi All ,

I was searching for logs and came up with this kernel logs that are pointing to chromium . Not sure why the access are denied even though I have given all permission in SNAP .

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Mar 31 20:30:05 satwik-desktop kernel: [ 892.049527] kauditd_printk_skb: 514 callbacks suppressed
Mar 31 20:30:05 satwik-desktop kernel: [ 892.049534] audit: type=1400 audit(1617202805.962:592): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/+sdio:mmc1:0001:3" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:05 satwik-desktop kernel: [ 892.052893] audit: type=1400 audit(1617202805.966:593): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/+sdio:mmc1:0001:1" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:05 satwik-desktop kernel: [ 892.054950] audit: type=1400 audit(1617202805.970:594): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/+sdio:mmc1:0001:2" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:05 satwik-desktop kernel: [ 892.067824] audit: type=1400 audit(1617202805.982:595): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c510:0" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:06 satwik-desktop kernel: [ 892.106988] audit: type=1400 audit(1617202806.022:596): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c153:1" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:06 satwik-desktop kernel: [ 892.109031] audit: type=1400 audit(1617202806.022:597): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c153:0" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:06 satwik-desktop kernel: [ 892.121759] audit: type=1400 audit(1617202806.038:598): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c509:0" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:06 satwik-desktop kernel: [ 892.171198] audit: type=1400 audit(1617202806.086:599): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c3:93" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:06 satwik-desktop kernel: [ 892.171701] audit: type=1400 audit(1617202806.086:600): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c3:246" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Mar 31 20:30:06 satwik-desktop kernel: [ 892.172119] audit: type=1400 audit(1617202806.086:601): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c2:116" pid=3224 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

It seems that apparmor denies access to the camera. You have to check the apparmor profiles and either disable apparmor or create/modify a profile for chromium that allows accessing the camera.

Hi Manfred Hampl,

Thanks . I will check it today and get back if it works .

With Regards,
Saurabh Kumar Pandey

Hi Manfred Hampl,

To pinpoint that issue is only because of apparmor denial I wanted to disable apparmor first . I tried the option suggested in https://ubuntu.com/server/docs/security-apparmor and used the command below but was not successful.

1. Tried the commands
sudo systemctl stop apparmor.service
sudo systemctl disable apparmor.service

Checked by testing camera in chrome . Same problem and I see the denial log again . Restarted PI and tested but still the same problem .

2. Tried moving all the profiles from enforce to complain mode .

sudo aa-complain /etc/apparmor.d/*

Most of the profiles moved except snap.chromium.chromium . Retesed and no luck .

As my requirement to have pi camera in chrome was time pressing I found another option to load chrome from debian repository without snap and it worked . And the camera also works .(Double confirms that it is Ubuntu Snap issue). Copying below the

https://askubuntu.com/questions/1204571/how-to-install-chromium-without-snap

So the root problem still remains unsolved . But atleast have a workaround . Thanks to all for the support .

With Regards,
Saurabh Kumar Pandey