[Bug 89904] New: [IVB] intermittent return from blank shows non-rotated monitors glitch

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89904

            Bug ID: 89904
           Summary: [IVB] intermittent return from blank shows non-rotated
                    monitors glitch
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: chris.bainbridge at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 114863
  --> https://bugs.freedesktop.org/attachment.cgi?id=114863&action=edit
kernel.log

IvyBridge Macbook with triple rotated monitors (--rotate left). TearFree
enabled. Latest git kernel and xorg intel driver.

Turn off screensaver/lock, then do:

$ xset s blank
$ xset s 5

Now wait for screen to blank, move mouse, wait for blank...

At some point the monitors will unblank and the displays will be showing with
no rotation (--rotate normal). Moving the mouse to a monitor and clicking on it
seems to trigger a redraw back to the rotated state.

Happens in XFCE and Gnome, kernel 3.16.0 and 4.0.0-rc6+. 

It is intermittent and sometimes difficult to trigger. On test in XFCE, it
occurred 3 times out of 48. On Gnome test it seems easier to trigger, occurred
7/15 times.

Think I managed to get Xorg and kernel logs at the right time.

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