1. Turn on raspberry pie settings
sudo raspi-config
2. Select the third interface options
3. Turn all options on, and then restart raspberry pie
4.vcgencmd get_camera
The values change to 1, which can not only detect the input, but also identify the device
5. You can execute raspistill and run the python picamera program
For example: raspistill -o /home/pi/Desktop/first.jpg
Wget Error: ERROR: The certificate of ‘xxxxx’ is not trusted
Solution:
Add -- no check certificate at the end of WGet, as shown in the figure
Today, apt failed to update when building the image with dockerfile on raspberry pie
...
---> Running in 05393fa6f242
Get:1 http://ports.ubuntu.com/ubuntu-ports focal InRelease [265 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease [114 kB]
Err:1 http://ports.ubuntu.com/ubuntu-ports focal InRelease
At least one invalid signature was encountered.
Err:2 http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease
At least one invalid signature was encountered.
Get:3 http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease [101 kB]
Err:3 http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease
At least one invalid signature was encountered.
Get:4 http://ports.ubuntu.com/ubuntu-ports focal-security InRelease [114 kB]
Err:4 http://ports.ubuntu.com/ubuntu-ports focal-security InRelease
At least one invalid signature was encountered.
Reading package lists...
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal InRelease' is not signed.
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease' is not signed.
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease' is not signed.
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal-security InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal-security InRelease' is not signed.
...
The solution is:
in http://ftp.debian.org/debian/pool/main/libs/libseccomp/ Download the latest version of libseccomp2. The current version is libseccomp2_ 2.5.1-1_ Armhf. DEB
install on raspberry pie
>>> sudo dpkg -i libseccomp2_2.5.1-1_armhf.deb
“20999;” 21448;”
[br] https://askubuntu.com/a/1264921/685786
https://stackoverflow.com/a/64463211/7151777