[Bug 94840] New: [Ivy Bridge] Image on second monitor gets stuck except or mouse pointer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94840

            Bug ID: 94840
           Summary: [Ivy Bridge] Image on second monitor gets stuck except
                    or mouse pointer
           Product: xorg
           Version: git
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: fhimpe at telenet.be
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

On my Debian testing x86_64 system, I recently started to have problems with my
dual-screen setup: suddenly the image on my second monitor seems to get
stuck, except for the mouse pointer.

For example when I move a window from the laptop monitor to my second
screen, the window does not appear at all on the second screen. However,
the mouse pointer does while I am dragging the window over the second
screen.

To get out of this situation, I open GNOME's Displays configuration,
switch the second monitor to a duplicate of the first, and then in the
confirmation dialog that comes after the change, choose to revert the
change. Then everything works normally again. dmesg nor Xorg.0.log contain
any error.

The problem seems unrelated to the Linux kernel version: it happens with both
Linux 4.3 as 4.5. I am using xserver 1.18.3 and the Intel X driver Debian
package 2:2.99.917+git20160325-1 and GNOME 3.18. It probably started when
either the xserer was updated to 3.18 or with an update of the Intel driver.

The system is a HP EliteBook 8470p with this GPU:
00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core
processor Graphics Controller [8086:0166] (rev 09)

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