我相信我也有同样的问题这线程，但我已经尝试了列出的步骤，但无法解决问题。
我在自定义桌面上运行 Ubuntu 14.04 64 位，配有 4GB DDR3 内存、3.3 GHz Intel i3 处理器和 GeForce GTX 950，使用“软件和更新”中附加驱动程序选项卡下的 nvidia 驱动程序 352.63。我正在尝试使用这方法。
这是尝试通过 apt 安装 cuda 时的终端输出：
$ sudo apt-get install cuda
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
cuda : Depends: cuda-7-5 (= 7.5-18) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
这是我使用 Aptitude 得到的结果：
$ sudo aptitude install cuda
The following NEW packages will be installed:
cuda cuda-7-5{a} cuda-command-line-tools-7-5{a} cuda-core-7-5{a}
cuda-cublas-7-5{a} cuda-cublas-dev-7-5{a} cuda-cudart-7-5{a}
cuda-cudart-dev-7-5{a} cuda-cufft-7-5{a} cuda-cufft-dev-7-5{a}
cuda-curand-7-5{a} cuda-curand-dev-7-5{a} cuda-cusolver-7-5{a}
cuda-cusolver-dev-7-5{a} cuda-cusparse-7-5{a} cuda-cusparse-dev-7-5{a}
cuda-documentation-7-5{a} cuda-driver-dev-7-5{a} cuda-drivers{a}
cuda-license-7-5{a} cuda-misc-headers-7-5{a} cuda-npp-7-5{a}
cuda-npp-dev-7-5{a} cuda-nvrtc-7-5{a} cuda-nvrtc-dev-7-5{a} cuda-runtime-7-5{a}
cuda-samples-7-5{a} cuda-toolkit-7-5{a} cuda-visual-tools-7-5{a}
freeglut3-dev{a} libdrm-dev{ab} libgl1-mesa-dev{a}
libgl1-mesa-dri-lts-utopic{ab} libgl1-mesa-glx-lts-utopic{ab}
libglapi-mesa-lts-utopic{ab} libglu1-mesa-dev{a} libllvm3.5{a}
libx11-xcb-dev{a} libxcb-dri2-0-dev{a} libxcb-dri3-dev{a} libxcb-glx0-dev{a}
libxcb-present-dev{a} libxcb-randr0-dev{a} libxcb-shape0-dev{a}
libxcb-sync-dev{a} libxcb-xfixes0-dev{a} libxmu-dev{a} libxmu-headers{a}
libxshmfence-dev{a} libxt-dev{a} libxxf86vm-dev{a} mesa-common-dev{a}
nvidia-352-dev{a} nvidia-352-uvm{a} nvidia-modprobe{a} x11proto-dri2-dev{a}
x11proto-gl-dev{a} x11proto-xf86vidmode-dev{a}
0 packages upgraded, 58 newly installed, 0 to remove and 29 not upgraded.
Need to get 12.5 MB/1,049 MB of archives. After unpacking 1,735 MB will be used.
The following packages have unmet dependencies:
libgl1-mesa-dri-lts-utopic : Conflicts: libgl1-mesa-dri but 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~trusty is installed.
libdrm-dev : Depends: libdrm2 (= 2.4.64-1~ubuntu14.04.1) but 2.4.65+git20151026.c745e541-0ubuntu0ricotz~trusty is installed.
Depends: libdrm-intel1 (= 2.4.64-1~ubuntu14.04.1) but 2.4.65+git20151026.c745e541-0ubuntu0ricotz~trusty is installed.
Depends: libdrm-radeon1 (= 2.4.64-1~ubuntu14.04.1) but 2.4.65+git20151026.c745e541-0ubuntu0ricotz~trusty is installed.
Depends: libdrm-nouveau2 (= 2.4.64-1~ubuntu14.04.1) but 2.4.65+git20151026.c745e541-0ubuntu0ricotz~trusty is installed.
Depends: libdrm-amdgpu1 (= 2.4.64-1~ubuntu14.04.1) but 2.4.65+git20151026.c745e541-0ubuntu0ricotz~trusty is installed.
libgl1-mesa-glx-lts-utopic : Conflicts: libgl1 which is a virtual package.
Conflicts: libgl1-mesa-glx but 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~trusty is installed.
libgl1-mesa-glx : Conflicts: libgl1 which is a virtual package.
libglapi-mesa-lts-utopic : Conflicts: libglapi-mesa but 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~trusty is installed.
xserver-xorg : Conflicts: xorg-renamed-package which is a virtual package.
The following actions will resolve these dependencies:
Keep the following packages at their current version:
1) cuda [Not Installed]
2) cuda-7-5 [Not Installed]
3) cuda-documentation-7-5 [Not Installed]
4) cuda-samples-7-5 [Not Installed]
5) cuda-toolkit-7-5 [Not Installed]
6) freeglut3-dev [Not Installed]
7) libdrm-dev [Not Installed]
8) libgl1-mesa-dev [Not Installed]
9) libgl1-mesa-dri-lts-utopic [Not Installed]
10) libgl1-mesa-glx-lts-utopic [Not Installed]
11) libglapi-mesa-lts-utopic [Not Installed]
12) libglu1-mesa-dev [Not Installed]
13) mesa-common-dev [Not Installed]
Accept this solution? [Y/n/q/?] y
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 29 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
我不是一个十足的 Linux 极客，但我对终端相当熟悉，并且愿意学习。这不是一个非常紧急的问题，但任何帮助都会很感激。