[Bug 94807] New: No image on ASUS Transformer Book T100HA DSI display

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94807

            Bug ID: 94807
           Summary: No image on ASUS Transformer Book T100HA DSI display
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: yjwong92 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 122688
  --> https://bugs.freedesktop.org/attachment.cgi?id=122688&action=edit
kernel.log

On my ASUS Transformer Book T100HA, the built in DSI display fails to display
any image right after KMS takes over from efifb. The backlight remains on.

Please see attached for kernel log (drm.debug=0xe).

I am unable to obtain a VBIOS dump. Kernel says:
0:02.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0xe725

Steps to reproduce the issue:
1) Just boot the device.

How often does the steps listed above trigger the issue?
Always.

The following information about your system:
-- system architecture: x86-64
-- kernel version: 4.6.0-994-generic (drm-intel-nightly from 2016-04-02)
-- Linux distribution: Ubuntu 15.10
-- Machine or mother board model: ASUS Transformer Book T100HA
-- Display connector: DSI

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