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Origin of the problem: xserver-xorg-video-intel is buggy but the differential solution is modesetting (option 1 here) does not allow to fix brightness control (F5/F6). File /usr/share/X11/xorg.conf/20-intel.conf for the current condition

# Joakim, https://askubuntu.com/q/816631/25388
Section "Device"
   Identifier "Intel Graphics"
   Driver "intel"
   Option "AccelMethod" "sna"
   Option "TearFree" "true"
   Option "DRI" "3"
   Option "Backlight" "intel_backlight"
EndSection

Fig. 1-4 Outputs in Matlab where you see cluttering of texture

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Differential solution: sudo apt-get purge xserver-xorg-video-intel, and Ubuntu starts to use modesetting package instead. Output: clear texture in Matlab.

Hardware: Asus Zenbook UX303UA
OS: Ubuntu 16.04 64 bit
Linux kernel: 4.7
Matlab: 2016a
Related: Matlab, font rendering problem
Matlab service request: 02135568

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Léo Léopold Hertz 준영
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