[Bug 93096] New: [i865] modeset failure, blank backlight screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93096

            Bug ID: 93096
           Summary: [i865] modeset failure, blank backlight screen
           Product: DRI
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: mroos at linux.ee
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 120095
  --> https://bugs.freedesktop.org/attachment.cgi?id=120095&action=edit
dmesg from 4.2.0

With Linux 4.3.0, I get a blank greyish screen when the i915 driver does it
modeset on boot. The system works fine remotely, just no output on console. No
X is running, just fbcon in this machine. 4.2.0 worked fine.

Attached are dmesg outputs with drm.debug=0xe from 4.2.0 and 4.3.0.

Bisection is possible but will be slow since I am usually not near the machine.

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