It looks like you have installed a libcublas-dev package which is not in the Ubuntu archive, and this package does not correctly declare its relation to packages in the Ubuntu archive.
Please remove the libcublas-dev package and try installing nvidia-cuda- toolkit again. ** Changed in: nvidia-cuda-toolkit (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1846530 Title: package nvidia-cuda-dev (not installed) failed to install/upgrade: trying to overwrite '/usr/include/cublas.h', which is also in package libcublas-dev 10.2.1.243-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-cuda-toolkit/+bug/1846530/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs