[Bug 94190] New: desktop change is not completed sometimes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94190

            Bug ID: 94190
           Summary: desktop change is not completed sometimes
           Product: xorg
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: jirislaby at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 121800
  --> https://bugs.freedesktop.org/attachment.cgi?id=121800&action=edit
xorg log

I have 2x2 virtual desktops in plasma 5 using opengl 3.1 (GLX) compositing.

I updated to the latest driver 2.99.917-546-gde7407d20703 recently. (And I
updated from kernel 4.3.x to 4.4.1 recently too.)

When I switch desktops, sometimes the screen is not redrawn at final position.
I still see about 100 px shifted screen, like the desktop shift haven't
finished completely. But when I use mouse, the screen is redrawn correctly
either partially (mostly when hovering) or fully (on clicking).

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