Display acting funny, tearing, cursor erratic, etc

If your display acts strangely, for example the cursor suddenly gets multiplied, or the panel starts blinking, this may have something to do with your Graphic card. If your PC uses and Intel Graphic card, open a terminal and enter the following:

sudo touch /etc/X11/xorg.conf.d/11-Intel-GPU.conf

then

sudo nano /etc/X11/xorg.conf.d/11-Intel-GPU.conf

Now copy paste the following into that file:

Section "Device"
 Identifier "Intel Graphics"
 Driver "intel"
 Option "AccelMethod" "sna"
 Option "TearFree" "off"
EndSection

 

Then press “ctrl o” to save the file, then press “enter“, and then “ctrl x“.

After that reboot and check if the issue has gone.

If your Graphic card is from AMD, open a terminal and enter:

sudo touch /etc/X11/xorg.conf.d/12-AMD-GPU.conf

then

sudo nano /etc/X11/xorg.conf.d/12-AMD-GPU.conf

Now copy paste the following into that file:

#Section "Device"
#        Identifier "Radeon"
#        Driver "Radeon"
#        Option "AccelMethod" "EXA"
#        Option "EXAVSync" "yes"
#        Option "DRI" "3"
#        Option "TearFree" "off"
#        Option "ColorTiling" "on"
#        Option "ColorTiling2D" "on"
#EndSection

Section "Device"
  Identifier "Radeon"
  Driver "Radeon"
  Option "AccelMethod" "glamor"
  Option "DRI" "3"
  Option "TearFree" "off"
  Option "ColorTiling" "on"
  Option "ColorTiling2D" "on"
EndSection

Then press “ctrl o” to save the file, then press “enter“, and then “ctrl x“.

After that reboot and check if the issue has gone. If you still have issues with your AMD GPU, reopen that file and remove the “#” from the top section, and instead place them in the bottom section, save the file and reboot.

 

I have only experienced this on Intel and AMD GPU’s, not on nVidia ones. Also make sure you don’t have both of the files within /etc/X11/xorg.conf.d at the same time. Otherwise the GUI probably won’t start.