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    <head>
      <base href="https://bugs.freedesktop.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Intel video driver cannot display laptop screen anymore"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97345">97345</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Intel video driver cannot display laptop screen anymore
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>high
          </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>freedesktop@nicohood.de
          </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>Hello,
I was redirected here from the archlinux IRC chat, hoping that this is the
correct place to file this bug.

I recently updated my archlinux kernel from 4.6 to 4.7 and my laptop screen is
fully dead now (backlight still on). I am using an intel cpu/gpu 4000 with the
builtin kernel drivers (no additional intel driver of arch).

This monitor is displayed in the xfce monitor config though. If i switch to
tty1 there is no output at all on the laptop. My 2 external displays work. If I
turn one off, this doesnt affect the laptop screen.

When booting I need to unlock my root partition (encrypted). This message is
actually displayed on the laptop screen at the initial step when systemd was
loaded. I am using EFI, but I can also boot MBR.

Switching back to 4.4 LTS kernel solves this problem.

My hardware is the following:
model name      : Intel(R) Core(TM) i7-4702MQ CPU @ 2.20GHz

Its an Fujitsu Lifebook E744.

dmesg:
<a href="https://gist.github.com/NicoHood/3e515f96b522fc1ae0d6a781ce00ff58">https://gist.github.com/NicoHood/3e515f96b522fc1ae0d6a781ce00ff58</a>

Let me know of any additional information that I should provide.
I did not open a bug anywhere else yet, as people directed me here first. In
the meantime I will try the mainline kernel and report results back.</pre>
        </div>
      </p>


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