package nvidia-cuda-dev (not installed) failed to install/upgrade: 正试图覆盖 /usr/include/cublas.h，它同时被包含于软件包 libcublas-dev 10.2.2.89-1

[John Wayne]

i try to install cuda10.2 in ubuntu 20.10

ProblemType: Package
DistroRelease: Ubuntu 20.10
Package: nvidia-cuda-dev (not installed)
ProcVersionSignature: Ubuntu 5.8.0-44.50-generic 5.8.18
Uname: Linux 5.8.0-44-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Mar 5 15:14:14 2021
ErrorMessage: 正试图覆盖 /usr/include/cublas.h，它同时被包含于软件包 libcublas-dev 10.2.2.89-1
InstallationDate: Installed on 2021-03-04 (0 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-0ubuntu1
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.20.5ubuntu2
 apt 2.1.10ubuntu0.2
SourcePackage: nvidia-cuda-toolkit
Title: package nvidia-cuda-dev (not installed) failed to install/upgrade: 正试图覆盖 /usr/include/cublas.h，它同时被包含于软件包 libcublas-dev 10.2.2.89-1
UpgradeStatus: No upgrade log present (probably fresh install)

[Graham Inggs (ginggs)]

The libcublas-dev package is not from the Ubuntu archive, and it doesn't correctly declare its relation to packages in the Ubuntu archive.

You need to either install nvidia-cuda-toolkit from the Ubuntu archive, or directly from the vendor. You can't mix and match.