[Bug 91694] New: [SKL] Low performance of rendering on UXA

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91694

            Bug ID: 91694
           Summary: [SKL] Low performance of rendering on UXA
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: januszmk6 at gazeta.pl
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 117796
  --> https://bugs.freedesktop.org/attachment.cgi?id=117796&action=edit
dmesg

HD Graphics 530, when I am switching to full screen window on i3wm and back, it
takes long time, like its on heavy load. When I am watching movie and doing
someting else on other monitor, it skips frames until operation is done -
mostly when I am switching to full screen, also on slim, also . It doesn't
happen on SNA or BLT but  when I switch into SNA or BLT, it doesn't render
properly my movie, when I am switching for example to full screen on my player,
only player controls goes into full screen, the view of the movie is staying at
the same resolution it was. Also on SNA and BLT  I get some flickers on when I
am typing login into slim manager. 
On UXA also switching tabs on firefox takes lot of time. 
The similar problems I am experiencing on KDE.

kernel version drm-intel-next from 2015-08-18, xf86-video-intel-2.99.917-r2

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