[Bug 58138] New: three monitors using intel HD 4000 (Ivy Bridge) shows failed to set mode on [CRTC:7]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58138

          Priority: medium
            Bug ID: 58138
          Assignee: chris at chris-wilson.co.uk
           Summary: three monitors using intel HD 4000 (Ivy Bridge) shows
                    failed to set mode on [CRTC:7]
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: fahim.ayat at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

Created attachment 71332
  --> https://bugs.freedesktop.org/attachment.cgi?id=71332&action=edit
log file in /var/log/Xorg.1.log

I'm running Archlinux 2012 - kernel 3.6.9-1-ARCH
When plugging two monitors (the third one is laptop's LCD) x server fails to
start and shows "[drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on
[CRTC:7] on two monitors and turns off the third one.
I'm using intel core i7 3612qm (Ivy bridge) and according to inel
Specifications at http://ark.intel.com/products/64901 , inel hd 4000 supports
up to 3 monitors.
xorg server version lines :
X.Org X Server 1.13.0.902 (1.13.1 RC 2)
Release Date: 2012-12-06

Attached log file
Thanx in advance

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