the pixelated/garbled text in Java applications (particularly severe on remote java applications) appears to be caused by bugs in the xorg intel driver for the default SNA acceleration method, see
https://www.mathworks.com/matlabcentral/answers/271637-matlab-starts-but-looks-weird-arch-linux https://wiki.archlinux.org/index.php/intel_graphics#SNA_issues the workaround is to create a file /usr/share/X11/xorg.conf.d/20-intel.conf with the content of Section "Device" Identifier "card0" Driver "intel" Option "AccelMethod" "uxa" EndSection and restart the X window, this will completely solve the pixlated graphics issue. However, the UXA rendering method is somehow extremely unstable for my 14.04 LTS with the 4.4.0-78 kernel, only in a few minutes after X window starts, the xorg process starts to use 80-90% of the CPU load, and window response becomes sluggish, despite similar glxgears FPS readings compared to SNA. I switched several times back and forth, the observation is consistent on my computer. I had to revert back to SNA to use the computer normally. too bad this is not a real fix. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1533675 Title: Screen issue with Java applications To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1533675/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
