My monitor resolution 1600x1200 but when I go to settings and displays the maximal resolution is 1360x768 I tried detect displays but nothing happened
Try setting a custom resolution in xorg.conf. You should have one already, and if not, use this. Make sure your SubSection: Display has the right resolution. I had a problem with monitor resolution when I used a DVI to VGA adapter, these adapters can strip out EDID data. The monitor sends the EDID data to the computer to tell it what resolutions it can support.
Section "Screen" Identifier "Default Screen" Device "NVIDIA Corporation NV34 [GeForce FX 5200]" Monitor "CM752ET" DefaultDepth 16 SubSection "Display": Depth 16 Modes "1280x1024" "1024x768" EndSubSection EndSection
This solution work for me. I use it on Ubuntu 14.04 and 16.04 and working good!
If you want for example resolution 1290x1080 (Full HD) type in terminal console
cvt 1920 1080
You will see something like this for output:
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
Go to your home folder for example
Edit or create file .xprofile
Insert folowing text na following previous output from command cvt:
xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync xrandr --addmode VGA1 "1920x1080_60.00"
Save file, reboot and enjoy in your new resolution :)