To completely remove all traces of AMD drivers, ROCm, and any related OpenCL components from your Ubuntu system, follow these steps:
sudo amdgpu-uninstallsudo apt remove --purge 'rocm*' 'rock-dkms' 'hsa-rocr-dev'
sudo rm -rf /opt/rocm
sudo apt remove --purge 'amdgpu' 'amd' 'ocl-icd*'
sudo apt autoremove --purge
sudo rm -rf /etc/apt/sources.list.d/amdgpu*
sudo rm -rf /etc/apt/sources.list.d/rocm*
sudo apt updatesudo apt list --installed | grep -i amdgpu
sudo apt list --installed | grep -i rocm
sudo reboot
After rebooting, your system should no longer have any AMD drivers or related software installed.