[Bug 96996] New: [BYT] No picture on DSI display after DRM loads on Teclast X80H tablet

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96996

            Bug ID: 96996
           Summary: [BYT] No picture on DSI display after DRM loads on
                    Teclast X80H tablet
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: laszlo.fiat at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 125149
  --> https://bugs.freedesktop.org/attachment.cgi?id=125149&action=edit
Full dmesg

- Steps to reproduce the issue: I turn on the tablet, grub menu appears, then a
few lines of log displayed as linux boots, then the DSI display goes blank.
Backlight is visibly on all the time.

- How often does the steps listed above trigger the issue? Always
- system architecture: ("uname -m"): x86_64
- kernel version: ("uname -r"): 4.7.0-rc7+ (compiled from drm-intel-nightly on
2016-07-18)
- Linux distribution: Debian testing
- Machine or mother board model: Teclast X80H baytrail-t tablet (z3735f CPU)
- Display connector: DSI

full dmesg is attached.

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