[Bug 65287] New: [IVB Regression] DP issue: system booting up with "call trace" and "ERROR" in dmesg

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65287

          Priority: medium
            Bug ID: 65287
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB Regression] DP issue:  system booting up with
                    "call trace" and "ERROR" in dmesg
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: yangweix.shui at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 80193
  --> https://bugs.freedesktop.org/attachment.cgi?id=80193&action=edit
dmesg: DP booting up with "Call Trace" and "ERROR"

Environment:
------------------
Kernel: (drm-intel-next-queued)92d44621ad2d083bc03920c904ca0a5eb10d9ded
Some additional commit info:
Author: Paulo Zanoni <paulo.r.zanoni at intel.com>
Date:   Fri May 31 16:33:24 2013 -0300

    drm/i915: add i915_ips_status debugfs entry


Description:
-----------------
With DP pipe plugged in, reboot machine, after booting up, we can see "Call
Trace" and "ERROR" messages in dmesg.

[drm:intel_pipe_config_compare] *ERROR* mismatch in adjusted_mode.flags
(expected 1, found 0)

We will bisect it tomorrow, if there's any advice, please comment. 


Reproduce Steps:
-----------------
1. plugged in DP pipe
2. reboot machine
3. checkout the dmesg

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