[Bug 64427] New: i915 (linux 3.9.1) console goes blank and resumes only when X starts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64427

          Priority: medium
            Bug ID: 64427
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: i915 (linux 3.9.1) console goes blank and resumes only
                    when X starts
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: fabio.coatti at gmail.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 79093
  --> https://bugs.freedesktop.org/attachment.cgi?id=79093&action=edit
full dmesg with drm debug enabled.

Hi all, 
I have an issue with a i7 3770 / q77 desktop, DVI-D monitor. (tested with linux
3.9.1)
Basically, the machine boots up in text mode but when the kernel switches to
i915 driver, the screen becomes blank. It resumes only when X starts.
I've tried all the possible combination fo kernel boot parameters with no
success, even applying all the hints collected thru google.
I'm quite sure that I'm doing a very stupid mistake, but I can't sort where it
is, so I filed a bug here.

Attached you can find full dmesg with drm debug active (drm.debug=0xe) X kicks
in approx at second 273.
Of course I can provide other data and perform other tests, just let me know.

Many thanks for any answer.

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