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I have some problem with resolution. My monitor resolution is 1920x1080. At first when I installed ubuntu i had 800x600.. Now, after installing AMD driver, I only have 1600x1200 to choose like max resolution. Why is that? What should I do?

Any answer will be helpful :)

P.S. My graphic card is Sapphire radeon HD 7850 (1Gb)

Naz
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Milos Manojlovic
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1 Answers1

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Here are the steps

  1. Use xrandr to make sure that the new mode can fit within the maximum framebuffer size 
xrandr | grep maximum

2. Use gtf to create a mode line

gtf 1920 1080 60

3. Add new mode using xrandr

xrandr --newmode "1920x1080_60" 173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync

4. Add this newly added mode to the desired output (VGA/LVDS etc)

xrandr --addmode VGA 1920x1080_60

5. Choose the new mode

xrandr --output VGA --mode 1920x1080_60
Naz
  • 1,570