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After breaking my nVidia drivers (only one screen detected, no GPU in Blender), and then somehow fixing them by reinstalling stuff with “nVidia” in its name, I have probably ended up with some nVidia-related packages I don’t need.

image

Are any of these packages useless?

(I only need the system to detect all screens and be able to use GPU in Blender.)

before doing that adding stuff , you should ask before break your system.
so first , if this working on login , check in journal

sudo journalctl -b0 | grep "nvidia"

you will have version working with last kernel(s)
you have

  • no need for nvidia-prime ( this is for hybrid video card & laptop )

  • no need for nvidia toolkits

  • no need for container

  • and version opencl ( 32bits ) is not updated

  • why are you using version dkms ( this come from AUR not from Cachy Repo )

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Thank you!

As for why am I using this or that, I don’t know tbh. :blush: CachyOS suggested a system update, I said “y not?”, the update (after several minutes of downloading and building) failed because some nVidia dependency would break, “well OK then, I am not insisting”, I expected it to simply not use the update… But apparently something broke - after the subsequent boot I only had one screen available and Blender only used CPU for Cycles.

After reading forums I reinstalled some stuff, and after another reboot all was OK again.

can you then post result

pacman -Qs nvidia

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local/cuda 13.2.1-1
    NVIDIA's GPU programming toolkit
local/egl-gbm 1.1.3-1.1
    The GBM EGL external platform library
local/egl-wayland 4:1.1.21-1.1
    EGLStream-based Wayland external platform
local/egl-wayland2 1.0.1-1.1
    EGLStream-based Wayland external platform (2)
local/egl-x11 1.0.5-1.1
    NVIDIA XLib and XCB EGL Platform Library
local/lib32-opencl-nvidia 595.58.03-1
    OpenCL implemention for NVIDIA (32-bit)
local/libvdpau 1.5-4.1
    Nvidia VDPAU library
local/libxnvctrl 595.71.05-1
    NVIDIA NV-CONTROL X extension
local/linux-firmware-nvidia 1:20260309-1
    Firmware files for Linux - Firmware for NVIDIA GPUs and SoCs
local/nvidia-open-dkms 595.71.05-2
    NVIDIA open kernel modules - module sources
local/nvidia-settings 595.71.05-1
    Tool for configuring the NVIDIA graphics driver
local/nvidia-utils 595.71.05-2
    NVIDIA drivers utilities
local/opencl-nvidia 595.71.05-2
    OpenCL implemention for NVIDIA