Comment 19 for bug 1268146

I notice changes after reinstalling the intel driver. The name of my display port change from eDP-01 to eDP1. After that, the high CPU issue disappear and resolved.

#sudo lshw -C video
  *-display
       description: VGA compatible controller
       product: 3rd Gen Core processor Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:45 memory:a0000000-a03fffff memory:90000000-9fffffff ioport:2000(size=64)

#glxinfo | grep -i string
server glx vendor string: SGI
server glx version string: 1.4
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.3.0-devel
OpenGL core profile shading language version string: 3.30
OpenGL version string: 3.0 Mesa 10.3.0-devel
OpenGL shading language version string: 1.30
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 10.3.0-devel
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.0

# dpkg-query --show xserver-xorg-video-intel
xserver-xorg-video-intel 2:2.99.910-0ubuntu1.1