I was trying to install the CUDA toolkit, so I went to the recommended nvidia.developer.com and installed CUDA Toolkit 10.2 with the following deb(network):
wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-ubuntu1804.pin
sudo mv cuda-ubuntu1804.pin /etc/apt/preferences.d/cuda-repository-pin-600
sudo apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub
sudo add-apt-repository "deb http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/ /"
sudo apt-get update
sudo apt-get -y install cuda
Along the way I must've screwed up by not disabling secure startup, as the installer prompted to input a password that would be needed later. After reboot I was not asked to input this password.
Since nvidia-smi was returning NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. I tried a suggestion and blacklisted nvidiafb from /etc/modprobe.d/blacklist-framebuffer.conf/ and sudo update-initramfs -u which ended with my boot screen frozen after reboot. Managed to get it working again, without blacklistings, and now using the opensource 440 driver.
I'm on Ubuntu 18.04 with a GeForce GTX 950M.
Quite stupidly, I ran sudo apt install nvidia-cuda-toolkit and it installed Cuda 9.1.85.
$ nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2017 NVIDIA Corporation
Built on Fri_Nov__3_21:07:56_CDT_2017
Cuda compilation tools, release 9.1, V9.1.85
Now I was trying to uninstall CUDA-10.2 but unable because of some shared dependecies - can't remember for sure. I tried several suggestions:
sudo apt-get remove cuda-10.2
sudo apt --fix-broken install
sudo apt-get --purge remove cuda-10.2
sudo apt-get remove --dry-run cuda-10.2
sudo apt-get autoclean
sudo apt-get autoremove
sudo apt --fix-broken install
sudo apt-get -o Dpkg::Options::="--force-overwrite" install --fix-broken
And, finally, I'm not even able to remove any CUDA because of a missing package. I couldn't find any info about this hence asking here.
dan@dann:~$ sudo apt-get --purge autoremove cuda*
[sudo] password for dan:
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package cuda-workspace
Edit: Adding that I have a folder "cuda-workspace", with ".metadata" folder inside. I believe I created this when installing Cuda 10.2.
dan@dann:~$ whereis cuda-workspace
cuda-workspace:
dan@dann:~$ dpkg -S /home/dan/cuda-workspace
dpkg-query: no path found matching pattern /home/dan/cuda-workspace
dan@dann:~$ dpkg -l | grep -i cuda
rc cuda-cudart-10-2 10.2.89-1 amd64 CUDA Runtime native Libraries
rc cuda-cudart-dev-10-2 10.2.89-1 amd64 CUDA Runtime native dev links, headers
rc cuda-cufft-10-2 10.2.89-1 amd64 CUFFT native runtime libraries
rc cuda-cupti-10-2 10.2.89-1 amd64 CUDA profiling tools runtime libs.
rc cuda-curand-10-2 10.2.89-1 amd64 CURAND native runtime libraries
rc cuda-cusolver-10-2 10.2.89-1 amd64 CUDA solver native runtime libraries
rc cuda-cusparse-10-2 10.2.89-1 amd64 CUSPARSE native runtime libraries
rc cuda-npp-10-2 10.2.89-1 amd64 NPP native runtime libraries
rc cuda-nvcc-10-2 10.2.89-1 amd64 CUDA nvcc
rc cuda-nvgraph-10-2 10.2.89-1 amd64 NVGRAPH native runtime libraries
rc cuda-nvjpeg-10-2 10.2.89-1 amd64 NVJPEG native runtime libraries
rc cuda-nvprof-10-2 10.2.89-1 amd64 CUDA Profiler tools
rc cuda-nvrtc-10-2 10.2.89-1 amd64 NVRTC native runtime libraries
rc cuda-nvtx-10-2 10.2.89-1 amd64 NVIDIA Tools Extension
rc cuda-sanitizer-api-10-2 10.2.89-1 amd64 CUDA Sanitizer API
rc cuda-toolkit-10-2 10.2.89-1 amd64 CUDA Toolkit 10.2 meta-package
rc cuda-visual-tools-10-2 10.2.89-1 amd64 CUDA visual tools
ii libcudart9.1:amd64 9.1.85-3ubuntu1 amd64 NVIDIA CUDA Runtime Library
ii libnvrtc9.1:amd64 9.1.85-3ubuntu1 amd64 CUDA Runtime Compilation (NVIDIA NVRTC Library)
ii nvidia-cuda-dev 9.1.85-3ubuntu1 amd64 NVIDIA CUDA development files
ii nvidia-cuda-doc 9.1.85-3ubuntu1 all NVIDIA CUDA and OpenCL documentation
ii nvidia-cuda-gdb 9.1.85-3ubuntu1 amd64 NVIDIA CUDA Debugger (GDB)
ii nvidia-cuda-toolkit 9.1.85-3ubuntu1 amd64 NVIDIA CUDA development toolkit
ii nvidia-profiler 9.1.85-3ubuntu1 amd64 NVIDIA Profiler for CUDA and OpenCL
ii nvidia-visual-profiler 9.1.85-3ubuntu1 amd64 NVIDIA Visual Profiler for CUDA and OpenCL
I ultimately wanted to keep the driver and a correct install of CUDA, confirm that everything is OK with nvcc --version and nvidia-smi, and try to use Pytorch with CUDA (torch.cuda.is_available() still returns False).
I'm a very obvious (and dumb) beginner... Any help would be tremendous! ;)
