I recently installed 17.04 on my desktop PC. Due to some technical constraints (I have a dual monitor setup and one them has only VGA adapter), I have to use both my RX480(primary monitor) and Intel HD4600.
While RX480 has no problems whatsoever, I am seeing blocky tears/tearing on my monitor on HD4600.
I tried the following:
Tear-free disabled in Intel Graphics, tearing in Xubuntu
https://ubuntuforums.org/archive/index.php/t-2344312.html
http://www.apolitech.com/2016/01/how-to-solve-video-tearing-on-intel.html
But to make matters worse, after adding the xorg.conf to /etc/X11
or alternatively 20-intel.conf to /usr/share/X11/xorg.conf.d
with the parameters
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
EndSection
I was stuck with the message on boot:
"/dev/sda1: clean, 121563/920272 files, 701079/3680256 blocks"
Adding GRUB parameter "nomodeset" disabled HD4600 and dropped the resolution on primary monitor to 800×600.
Am I doing something wrong? If not, what else I can do? Any kind of help is appreciated.
Best Answer
Try adding
i915.enable_rc6=0
to your boot parameter. This should fix the tearing. But it will disable an important power management module resulting in excessive fan use.