[Bug 103148] New: [BYT] DV8P blackscreen after i915 load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103148

            Bug ID: 103148
           Summary: [BYT] DV8P blackscreen after i915 load
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jan.brummer at tabos.org
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 134748
  --> https://bugs.freedesktop.org/attachment.cgi?id=134748&action=edit
Normal boot log with debug information

Device: Dell Venue 8 Pro (5830)
OS: Fedora 27
Kernel: 4.13.3-300.fc27.x86_64

Descripton:
Blackscreen with working backlight kicks in during kernel startup (after i915
take over).

A startup with i915.fastboot=1 works, but drops image as soon as screen is
rotated.

I'm attaching two log files, one with a normal startup and one with fastboot
enabled. Both have drm.debug=0xe enabled.

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