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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 - [i915] WARNING: CPU: 3 PID: 265 at drivers/gpu/drm/drm_irq.c:1130 drm_wait_one_vblank+0x177/0x180()"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90469">90469</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[i915] WARNING: CPU: 3 PID: 265 at drivers/gpu/drm/drm_irq.c:1130 drm_wait_one_vblank+0x177/0x180()
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </td>
        </tr>

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

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

        <tr>
          <th>Severity</th>
          <td>major
          </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>cornogle@googlemail.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=115800" name="attach_115800" title="whole dmesg of 3.19.8.6 kernel boot on lenovo yoga 2 851f  with i915 modeset=1">attachment 115800</a> <a href="attachment.cgi?id=115800&action=edit" title="whole dmesg of 3.19.8.6 kernel boot on lenovo yoga 2 851f  with i915 modeset=1">[details]</a></span>
whole dmesg of 3.19.8.6 kernel boot on lenovo yoga 2 851f  with i915 modeset=1

tested with vanilla kernels on the lenovo yoga 851f

* 3.19.1 till 3.19.8 (currently the EOF)
* 4.0.0 till 4.0.2 
* 4.1.0-rc1 till 4.1.0-rc3

with i915.modeset=1 I got only a black screen

in the dmesg I saw also a previous error message

[    1.212294] [drm:intel_parse_bios] *ERROR* Unknown element
[    1.212306] [drm:intel_parse_bios] *ERROR* Sequence elements going beyond
block itself. Sequence block parsing failed


but I do not know if that is the root cause of the bug reported by the kernel.

If I boot without KMS, I can use the machine with Xorg but without acceleration
etc.
I need KMS for the Wayland  / weston setup.
I attach the whole dmesg and if more debugs or infos are needed, I will provide
them too</pre>
        </div>
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