[Bug 108083] New: eDP Blank screen on Wayland

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108083

            Bug ID: 108083
           Summary: eDP Blank screen on Wayland
           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: shunonymous at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 141757
  --> https://bugs.freedesktop.org/attachment.cgi?id=141757&action=edit
full dmesg

Kernel is 4.18.8, 4.18.9(Arch), mainline(AUR), and
drm/drm-intel(https://github.com/shunonymous/aur-linux-drm-intel-git).
My laptop displays nothing in builtin monitor when launching Wayland
compositor.(weston, mutter)
It displays by connecting or disconnecting external monitor (by HDMI) (mutter.
weston doesn't work).
startx works without any problem.

I tried to revert
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=399334708b4f07b107094e5db4a390f0f25d2d4f
on mainline, this symptom was disappeared.


Machine: Razer Blade Stealth (2016 Later, UHD Model, w/o any eGPU)
External Display: LG 27UD88-W (3840x2160) connected with HDMI
OS: Arch Linux

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