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I just had the same problem. I thought I had installed Ubuntu 22.04.1 LTS Jammy 64-bit
but could not find any ros-humble
packages. After a while, I realised that I had installed the 32-bit OS by mistake. I verified this using this command:
$ dpkg --print-architecture
armhf
The correct response from the 64-bit OS is arm64
. Then I installed the 64-bit image and all the ros-humble
packages were available.