[Intel-gfx] TearFree true and Screen Rotation on Skylake

[Mattias Nyman]

Hey!
I am unable to rotate my screen to left or right using Skylake Integrated
Graphics with the
Option TearFree true
in the /usr/share/X11/xorg.conf.d/20-intel.conf

The screen turns black for a second, before returning to its previous
orientation.

Terminal output:
$ xrandr --output HDMI1 --rotate left
xrandr: Configure crtc 0 failed

Simply turning the TearFree option to false enables the screen to be
rotated again.

I have installed the recommended 2017Q1 Intel Graphics Stack.

I have described the issue on the linuxgraphics forum where I also included
the full 20-intel.conf, lspci -v output and the Xorg.0.log
https://01.org/linuxgraphics/forum/update-tool-support-
forum/tearfree-and-screen-rotation

Do let me know if I have missed something simple to get this working, or if
I can provide any more logs our other output to help with the issue.

-- 
Hälsningar

Mattias Nyman

DING
MÄLARVARVSBACKEN 8
117 33 STOCKHOLM
WWW.DING.SE <http://www.ding.se/>
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