[Bug 98985] New: [bdw-U] [broadwell-u] i915 multiple display halt system when moving windows i5-5200U i5-5287U

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98985

            Bug ID: 98985
           Summary: [bdw-U] [broadwell-u] i915 multiple display halt
                    system when moving windows i5-5200U i5-5287U
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: ismail at inbox247.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

When moving certain windows across displays, the system may suddenly halt and
has to be powered off

SYMPTOM
Either the window being dragged suddenly jumps to the top-left position of the
external display to the right (ie. display 2, the first external display) and
the system halts, or the system halts while the window is being dragged across
the internal display

Affected applications:
Virtual Machine Manager, Vuirtual Machine window
LibreOffice Writer

Other problem
If a Libre Office Writer window is opened on the internal display, ie by
launching LibreOffice Writer, the system halts.

IMPACT
Critical: in-app data loss, fsck data loss, forced system reboot

GETAROUND
Do not drag halting apps between displays
To move a LibreOffice Writer window, close it, and launch LibreOffice from a
terminal window on the destination display. On command libreoffice --writer,
LibreOffice opens on the display where
the terminal window is located.
For Virtual machines, close the window, move virtual machine manager to the
destination display and open the virtual machine window there.

The halt is similar to how the system halts when the kernel command line
parameter i915.enable_rc6=0 is missing.

uname --nodename --kernel-release --kernel-version && date --utc
--rfc-3339=date && lsb_release --description --codename --short && dpkg
--status libwayland-server0 | egrep "(^V|^Pa)" && dpkg --status gnome-session |
egrep "(^V|^Pa)"
c89 4.8.0-28-generic #30-Ubuntu SMP Fri Nov 11 14:03:52 UTC 2016
2016-12-03
Ubuntu 16.10
yakkety
Package: libwayland-server0
Version: 1.11.0-2
Package: gnome-session
Version: 3.20.2-1ubuntu7

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