We might experience display problem in a Linux Machine after monitor is replaced, especially when changing a LCD with a CRT. To be more precise, the monitor cannot display the GUI anymore because of monitor refresh rate too high. So we need to adjust the refresh rate through the console.
- As the monitor goes blank when displaying the GUI, hit Ctrl+Alt+F2 to switch the display to console. Login as root.
- Change directory to /etc/X11, look for a file called xorg.conf.
cd /etc/X11 - Make a copy of the file before making any changes.
cp xorg.conf xorg.conf.backup - Edit the file with your favorite editor:
vi xorg.conf - Look for the Monitor Section (similar as below):
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "AL1717"
DisplaySize 340 270
HorizSync 30.0 - 83.0
VertRefresh 56.0 - 75.0
Option "dpms"
EndSection
- Remove the line DisplaySize, HorizSync and VertRefresh, then save the file.
- Reboot the machine, and now it should able to display GUI.
reboot
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