Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top


I have an issue with my graphic card (Nvidia Quadro Fx 1400). When I go to system information this card is reported as "unknown" even though I installed nvidia-current drivers.

Now I can't adjust the screen resolution. It is now at 640x480 even though my display is capable of 1280x1024. It is a HP 1955 LCD. The display is also not recognized.

Bonjour, J'ai un Problème avec ma carte-graphique (Nvidia Quadro Fx 1400) lors j'allai o information système ! et carte graphique ! je trouve qu'il est 'Inconnu'
et j'ai installer le current version nvidia ! Et Je Peux Pas Ajuster la résolution d'écran ! Il Est a 640x480 et la résolution Que Mon Écran conseille s'est 1280x1024 ! Mon écran c'est HP 1955 LCD ! et aussi Mon écran Est Inconnu ! merci de Votre aide =)

share|improve this question
Welcome to AU. Please note that this site is for questions and answers in English language only. – Takkat Apr 21 '12 at 17:03

May be this can be an solution (Ubuntu 12.04): Go to System Settings > Hardware > Displays Make sure that "Mirror displays" is not marked otherwise: Note: may limit resolution options.
What is the result of the command "xrandr"in the terminal ?

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.