[Bug 76103] New: [915GM regression] black screen on boot Linux >= 3.14-rc1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76103

          Priority: medium
            Bug ID: 76103
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [915GM regression] black screen on boot Linux >=
                    3.14-rc1
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: krzysiek at podlesie.net
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 95693
  --> https://bugs.freedesktop.org/attachment.cgi?id=95693&action=edit
dmesg - 3f2dc5ac05714711fc14f2bf0ee5e42d5c08c581 + some unrelated patches (bad)

The commit 3f2dc5ac05714711fc14f2bf0ee5e42d5c08c581 (drm/i915: Fix 915GM
self-refresh enable/disable) on HP Compaq nc6120 causes black screen after boot
with LVDS only. Connecting an external VGA monitor or starting X fixes the
problem.

Reverting this commit fixes the problem (at least up to 3.14.0-rc6).

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