Здравствуйте, установив cuda-toolkit я столкнулся с такой проблемой:
после установки CUDA, терминал показал ошибку:
Errors were encountered while processing:
/var/cache/apt/archives/nvidia-opencl-dev_5.0.35-7ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
затем я нашел "решение":
cd /var/lib/dpkg/info
rm nvidia-opencl-dev_5.0.35-7ubuntu1_amd64.deb
apt-get -f install
но там такого файла не оказалось, там вообще пустая папка.
затем я удалил вообще этот пакет из "/var/cache/apt/archives/" и опять:
sudo apt-get -f install
в итоге:
denis@denis-Lenovo-V570:~$ sudo apt-get -f install
[sudo] password for denis:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
nvidia-opencl-dev
The following NEW packages will be installed:
nvidia-opencl-dev
0 upgraded, 1 newly installed, 0 to remove and 29 not upgraded.
1 not fully installed or removed.
Need to get 0 B/11.8 kB of archives.
After this operation, 68.6 kB of additional disk space will be used.
Do you want to continue [Y/n]? Y
(Reading database ... 205140 files and directories currently installed.)
Unpacking nvidia-opencl-dev:amd64 (from .../nvidia-opencl-dev_5.0.35-7ubuntu1_amd64.deb) ...
dpkg: error processing /var/cache/apt/archives/nvidia-opencl-dev_5.0.35-7ubuntu1_amd64.deb (--unpack):
trying to overwrite '/usr/lib/x86_64-linux-gnu/libOpenCL.so', which is also in package nvidia-libopencl1-331 331.38-0ubuntu1~xedgers~saucy1
Errors were encountered while processing:
/var/cache/apt/archives/nvidia-opencl-dev_5.0.35-7ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
теперь я не могу обновить систему

ах да, CUDA работает при этом на пять с плюсом