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

[Corentin “Nado” Pazdera]

August 15, 2018 1:16 PM, tuxic@××××××.de wrote:

> The wiki-page is old...it speaks of nvidia-driver-174.

Yeah, for legacy cards... If you check the history its also been updated quite frequently.

> modprobe.d/nvidia.conf:
> ----------------------------
> # Nvidia drivers support
> alias char-major-195 nvidia
> alias /dev/nvidiactl char-major-195
>
> # To tweak the driver the following options can be used, note that
> # you should be careful, as it could cause instability!! For more
> # options see /usr/share/doc/nvidia-drivers-396.24-r1/README
> #
> # !!! SECURITY WARNING !!!
> # DO NOT MODIFY OR REMOVE THE DEVICE FILE RELATED OPTIONS UNLESS YOU KNOW
> # WHAT YOU ARE DOING.
> # ONLY ADD TRUSTED USERS TO THE VIDEO GROUP, THESE USERS MAY BE ABLE TO CRASH,
> # COMPROMISE, OR IRREPARABLY DAMAGE THE MACHINE.
> options nvidia NVreg_DeviceFileMode=432 NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=27
> NVreg_ModifyDeviceFiles=1
>
> modprobe.d/nvidia-rmmod.conf
> ----------------------------
> # Nvidia UVM support
> remove nvidia modprobe -r --ignore-remove nvidia-drm nvidia-modeset nvidia-uvm nvidia
>
> All the configurations are working all the years up to x11-drivers/nvidia-drivers-396.24-r1.
> After that, no CUDA device was found.
> Based on logical reasons, I would tend to think, that it is something
> version specific and no global setting which is valid since
> nvidia-driver-174.

Updates may need to change a config file after bringing breaking changes, it might not be the cause
I agree. But its possible.

Is CUDA disabled on both cards? I have a 970Ti, although my MB is different, we might try to
compare the big differences in our systems?

--
Corentin “Nado” Pazdera