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DaniCee
Asked: 2015-02-16 20:57:03 +0800 CST

Ubuntu 14.04: Cannot change screen resolution

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I know there are many questions with the same topic, but no solution seem to apply to my case... I'm on Ubuntu 14.04 on a Toshiba Satellite L735 laptop. My xrandr output is:

 Screen 0: minimum 8 x 8, current 2390 x 768, maximum 8192 x 8192

 VGA-0 connected 1024x768+1366+0 (normal left inverted right x axis y axis) 0mm x 0mm
    1024x768       60.0*+
    1360x768       60.0     59.8  
    1152x864       60.0  
    800x600        72.2     60.3     56.2  
    680x384        60.0     59.8  
    640x480        59.9  
    512x384        60.0  
    400x300        72.2  
    320x240        60.1  

 LVDS-0 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 294mm x 166mm
    1366x768       60.0*+

 HDMI-0 disconnected (normal left inverted right x axis y axis)

Why don't I have more options for LVDS-0?

I don't seem to be able to Mirror the displays either...

mirror

I am using the recommended nvidia driver:

nvidia

NOTE

It is not a problem with the second screen, but with Ubuntu/Nvidia themselves... because when I am not connected to a second screen, I still cannot change the resolution.

enter image description here

Please help! I need to be able to:

1- Change the resolution on the laptop screen (with or without a second screen associated)

2- Use mirror displays when a second screen is present

nvidia

1 Answers

  1. Best Answer

    Method 1: Disable Unknown Display

    Click the Unknown Display Box and below it's on, turn it Off and Apply, Every time you Install Ubuntu for the first Time the Cause is Unknown Display.

    Method 2: Changing Display Driver to X.Org

    If you encountering Problems but the First Method doesn't Work, Try this Method

    Open System Settings

    once opened you will see some options, Click Software & Updates

    and then Additional Drivers Section. Tick the "Using X.Org X Server" and Apply Changes Once applied Reboot. and Try changing the Resolution.

    My Experience

    I'm Having Problem with the brightness when NVIDIA Driver is in Use and when trying to Enter a Command for a Solution and rebooted the Brightness is remain the same,So i try changing to X.Org and it Worked!

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