Bug#795262: nvidia-cuda-toolkit: Reboot, after package installation, do not unload the Nouveau drivers

[Luca Boccassi]

On Aug 21, 2015 08:55, "Vincent Cheng" <vcheng at debian.org> wrote:
>
> Hi François and Luca,
>
> On Sat, Aug 15, 2015 at 4:07 PM, Luca Boccassi <luca.boccassi at gmail.com>
wrote:
> > On Wed, 2015-08-12 at 13:58 +0200, François Legendre wrote:
> >> Package: nvidia-cuda-toolkit
> >> Version: 6.0.37-5
> >> Severity: normal
> >>
> >> Dear Maintainer,
> >>
> >> Many thanks for your work.
> >>
> >> I install the nvidia-cuda-toolkit using synaptic. After reboot, the
Nouveau
> >> drivers are still loaded. The command
> >>
> >> # lsmod | grep nouveau
> >>
> >> prints some lines.
> >>
> >> I follow the indications found at
http://docs.nvidia.com/cuda/cuda-getting-
> >> started-guide-for-linux/#axzz3iaadD0fW for Ubuntu distribution :
> >>
> >> 1. Create a file at /etc/modprobe.d/blacklist-nouveau.conf with the
following
> >> contents:
> >> blacklist nouveau
> >> options nouveau modeset=0
> >> 2. Regenerate the kernel initramfs:
> >> # update-initramfs -u
> >>
> >> Now, it works.
> >
> > Hello François,
> >
> > Thank you for your report.
> >
> > I'm not sure we should blacklist nouveau by default in the nvidia-cuda
> > packages, since they do not depend on the nvidia-driver packages (I
> > believe Cuda can be used without the latter). It could leave users with
> > a broken system.
>
> AFAIK you need to install the proprietary driver in order to use cuda
> (but I could be mistaken)?
>
> I don't think nvidia-cuda-toolkit should ship its own modprobe.d conf
> file; the proprietary nvidia driver packages already do, and end users
> should already have that installed.

Hello,

I agree, I don't think the toolkit should ship a modprobe file.

I thought the drivers were mandatory to run Cuda programs, but not to build
them. Unless I'm mistaken, the toolkit is used to build.

If this is not the case, should then the toolkit package depend on the
drivers?

Kind regards,
Luca Boccassi
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