[Bug 95199] New: connector_state->crtc warnings

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95199

            Bug ID: 95199
           Summary: connector_state->crtc warnings
           Product: DRI
           Version: XOrg git
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: sitsofe at yahoo.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 123335
  --> https://bugs.freedesktop.org/attachment.cgi?id=123335&action=edit
dmesg

Description of the problem:
When I boot up an Ubuntu 4.4.0-21-generic kernel on my EeePC 900 I get various
!connector_state->crtc warnings.

Steps to reproduce:
1. Boot an Ubuntu 4.4.0-21-generic kernel on an EeePC 900.

Expected results:
No warnings

Actual results:
Warnings like:
[    2.504680] WARNING: CPU: 0 PID: 6 at
/build/linux-TGcUZh/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:12155
intel_atomic_check+0x307/0x6d0 [i915]()
[    2.504685] WARN_ON(!connector_state->crtc)

How reproducible is the problem?
It is reproducible every time.

Version information:
EeePC 900
Ubuntu 16.04 i686
Intel 915GM
xorg 1:7.7+13ubuntu3
xserver-xorg 1:7.7+13ubuntu3
xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1
linux-image-4.4.0-21-generic 4.4.0-21.37

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