On 06/07/17 13:46, Mattias Nyman wrote:
On 4 July 2017 at 12:12, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
Quoting Mattias Nyman (2017-07-04 10:50:00)
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.
commit c62177ec321e009a1abcdc969dd808fb37136013
Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date: Wed Apr 20 21:31:46 2016 +0100
sna: Force the shadow buffer even after we fail to set the crtc for TearFree
As the first choice of orientation and tiling may be invalid, e.g.
left/right rotation on Skylake, we need to force the second pass here to
try and an alternate non-native rotation.
Can confirm this got it working. Installed from the latest commit on
the master branch after verifying the changes in the mentioned commit
were in there.
You can also try the below patch for better performance, it will allow
hardware rotation to be used:
diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 9fe09fff9218..257b93784579 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -69,8 +69,8 @@
#define FORCE_FLUSH 0
#define FORCE_FULL_SYNC 0 /*
https://bugs.freedesktop.org/show_bug.cgi?id=61628 */
-#define DEFAULT_PIXMAP_TILING I915_TILING_X
-#define DEFAULT_SCANOUT_TILING I915_TILING_X
+#define DEFAULT_PIXMAP_TILING I915_TILING_Y
+#define DEFAULT_SCANOUT_TILING I915_TILING_Y
#define USE_INPLACE 1
#define USE_SPANS 0 /* -1 force CPU, 1 force GPU */
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