Re: [gentoo-user] Re: "No CUDA device found" with nvidia-drivers newer than nvidia-drivers-396.24-r1(

On 08/14 11:16, Nikos Chantziaras wrote:
> On 14/08/18 13:35, tuxic@××××××.de wrote:
> > Hi,
> >
> > after upgrading to nvidia-drivers-396.51 no CUDA devices were found.
> > Last version, which works for me is nvidia-drivers-396.24-r1.
>
> Do you have the "uvm" USE flag set? It might be required for CUDA, but it's
> disabled by default (perhaps wrongly, because USE flags should follow
> upstream defaults unless there's a reason not to.)
>
>
Yes it is:

(this is the version, which is currentlu still working
    Installed versions:  396.24-r1(0/396)^md(08:31:04 PM 08/14/2018)(X driver kms static-libs tools uvm -acpi -compat -gtk3 -multilib -pax_kernel -wayland ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="64 -32 -x32" KERNEL="linux -FreeBSD")

and set via /etc/portage/package.use 

# required by app-admin/conky-1.10.6-r1::gentoo[nvidia,X]
# required by @selected
# required by @world (argument)
>=x11-drivers/nvidia-drivers-378.13 static-libs uvm

What else could be the reason for the problem?
How can I fix it?