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      <base href="https://bugs.freedesktop.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - eDP Blank screen on Wayland"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=108083">108083</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>eDP Blank screen on Wayland
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>DRI git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>shunonymous@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=141757" name="attach_141757" title="full dmesg">attachment 141757</a> <a href="attachment.cgi?id=141757&action=edit" title="full dmesg">[details]</a></span>
full dmesg

Kernel is 4.18.8, 4.18.9(Arch), mainline(AUR), and
drm/drm-intel(<a href="https://github.com/shunonymous/aur-linux-drm-intel-git">https://github.com/shunonymous/aur-linux-drm-intel-git</a>).
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
<a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=399334708b4f07b107094e5db4a390f0f25d2d4f">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=399334708b4f07b107094e5db4a390f0f25d2d4f</a>
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</pre>
        </div>
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