[Bug 96983] New: Erratic mouse cursor with ghosting and artifacts on external monitor via dock (vga+hdmi)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96983

            Bug ID: 96983
           Summary: Erratic mouse cursor with ghosting and artifacts on
                    external monitor via dock (vga+hdmi)
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: frankshin82 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Around mid June 2016 compile of the linux drm intel nightly branch kernel the
mouse cursor has erratic behavior.  The issue starts happening between commits
from 2016-06-13 and 2016-06-21.

I have a dell xps 13 9350 connected via usb-c to a dock (dell WD15) which has
two external monitors connected to the dock via hdmi and vga port.

The mouse, when moving from one external monitor to the other creates a ghost
trail of cursors.  The cursor jumps around erractically on display but the
actual cursor is somewhere else.

Please ask which details I can provide as there is nothing showing in dmesg.  

I've tried with two different mouse (logitech g700 and razer mamba).  This
issue does not happen in mainline branch kernel.

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