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    <head>
      <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 - i915 kms turns display black on Asus T100HA (Intel Atom x5-Z8500)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97529">97529</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>i915 kms turns display black on Asus T100HA (Intel Atom x5-Z8500)
          </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>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>pan0@centrum.cz
          </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=126095" name="attach_126095" title="dmesg output from drm-intel-nightly 4.8-rc3">attachment 126095</a> <a href="attachment.cgi?id=126095&action=edit" title="dmesg output from drm-intel-nightly 4.8-rc3">[details]</a></span>
dmesg output from drm-intel-nightly 4.8-rc3

Hi,
I have a problem on my Asus T100HA (Intel Atom x5-Z8500, Intel HD Graphics Gen
8-LP) with i915 driver. After modeset (kms) the display turns black until
reboot. The situation is the same when I boot without nomodest or with it and
reload the i915 module with modeset=1. I am using Debian and kernel build from
drm-intel-nightly from last week (commit
30de872fd5cf71a51994375fb4f76856c05b1c4c) – 4.8.0-rc3+, architecture is x86_64.
The dmesg output is attached – it is from boot without nomodeset and with
drm.debug=0x1e parameter.   

There are several timeouts, so I guess there could some problem with some irq.
I`ve tried to find what could be wrong but the code is too unknown for me.
Please let me know if I can provide some more diagnostics, test some patches
etc. I`ll be happy to help to make this work.

Thank you

Pavel</pre>
        </div>
      </p>


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