Need help: vertical screen rotation!

[David Edmundson]

​Linux david-laptop 4.10.17-2-MANJARO #1 SMP PREEMPT Sun May 21 11:02:41
UTC 2017 x86_64 GNU/Linux

Renderer:
Compositing
===========
Compositing is active
Compositing Type: OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile
OpenGL version string: 3.0 Mesa 17.2.4
OpenGL platform interface: EGL
OpenGL shading language version string: 1.30
Driver: Intel
GPU class: Haswell
OpenGL version: 3.0
GLSL version: 1.30
Mesa version: 17.2.4
Linux kernel version: 4.10.17
Direct rendering: Requires strict binding: no
GLSL shaders:  yes
Texture NPOT support:  yes
Virtual Machine:  no
OpenGL 2 Shaders are used
Painting blocks for vertical retrace:  no
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