Problem with resolution NVIDIA RTX 2070

[luc0365]

Hi forum members, new in town but not to linux.
I have a problem i can't solve, my resolution is 1920x1080 but i gan only get it to1024x768...i instaled the nvidia tool, but when clicked it wont start. Tried about anithing i can think off.
here is my result of inxi -rGsS

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System:
  Host: luc-sparky-pc Kernel: 5.2.0-3-amd64 x86_64 bits: 64
  Desktop: Xfce 4.14.1 Distro: SparkyLinux 6 (Po-Tolo)
Graphics:
  Device-1: NVIDIA TU106 [GeForce RTX 2070] driver: N/A
  Display: x11 server: X.Org 1.20.4 driver: nouveau,vesa
  unloaded: fbdev,modesetting resolution: 1024x768~N/A
  OpenGL: renderer: llvmpipe (LLVM 9.0 256 bits) v: 3.3 Mesa 19.2.1
Sensors:
  System Temperatures: cpu: 48.0 C mobo: 27.8 C
  Fan Speeds (RPM): N/A
Repos:
  Active apt repos in: /etc/apt/sources.list
  1: deb http://deb.debian.org/debian/ testing main contrib non-free
  2: deb-src http://deb.debian.org/debian/ testing main contrib non-free
  3: deb http://security.debian.org/ testing-security/updates main contrib non-free
  4: deb-src http://security.debian.org/ testing-security/updates main contrib non-free
  5: deb http://www.deb-multimedia.org/ testing main non-free
  No active apt repos in: /etc/apt/sources.list.d/liquorix.list
  No active apt repos in: /etc/apt/sources.list.d/sid.list
  Active apt repos in: /etc/apt/sources.list.d/sparky-testing.list
  1: deb https://sparkylinux.org/repo/ core main
  2: deb-src https://sparkylinux.org/repo/ core main
  3: deb https://sparkylinux.org/repo/ testing main
  4: deb-src https://sparkylinux.org/repo/ testing main
  Active apt repos in: /etc/apt/sources.list.d/sparky-unstable.list
  1: deb https://sparkylinux.org/repo/ unstable main
  2: deb-src https://sparkylinux.org/repo/ unstable main
It's a new & stable install.
Thanks!

[paxmark1]

I do not follow Nvidia much.  Since you are in stable, depending on how new your video card is, you might need the Nvidai propriertary blob.  The nvidia tool scoops up the latest straight from Nvidia, but you can get a Debian Nvidia blob. 
Try the Debian wiki for the Debian Nvidia info. .  Work beckons bye.