How to remove cuda with open cv completely?

[maxyesno]

Hi! I’m trying to reinstall OpenCV with CUDA support on my Jetson Orin Nano. I had installed it previously, but later tried to remove it. I thought I had deleted all the related CUDA and OpenCV files through the terminal and even Files, but when I check jtop, it still shows that OpenCV with CUDA is installed. I’m not sure what’s still left or how to fully remove it. Any help would be greatly appreciated!

[AastaLLL]

Hi,

You can uninstall CUDA with the following command:

$ sudo apt-get -y purge cuda-repo-ubuntu2204-12-6-local*
$ sudo apt-key del $(apt-key list | grep cudatools -B 1| grep 'pub' | cut -d ' ' -f 4 | cut -d/ -f 2)
$ sudo apt-get purge -y cuda-*-12-6
$ sudo apt-get purge -y $(dpkg -l | grep 'cuda-toolkit-' | grep 12.6 | awk '{print $2}')
$ sudo rm -rf /usr/local/cuda-12.6

How do you install OpenCV with CUDA support?
For pip, you can try pip3 uninstall ... to uninstall the package.

Thanks.

[maxyesno]

Hi,
I just want to make sure that the commands will help me uninstall OPEN CV WITH CUDA instead of just CUDA because I think they are different things as I see on jtop.

thanks!

[AastaLLL]

Hi,

How do you install OpenCV in your environment?
If you build it from the source, you can uninstall it through the Makefile of the source.

Thanks.

[maxyesno]

I am not sure. I followed Install OpenCV on Jetson Nano - Q-engineering ti install open cv with cuda before.

[AastaLLL]

Hi,

Could you try to run make uninstall inside the build folder to see if it works?
Thanks.