<html>
    <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 - Black Screen on Ubuntu 18.04 + Intel Graphics with Kernel > 4.15.0-47"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=111495">111495</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Black Screen on Ubuntu 18.04 + Intel Graphics with Kernel > 4.15.0-47
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>XOrg 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>not set
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>not set
          </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>zowalla@colorful-bytes.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=145174" name="attach_145174" title="dmesg output for v5.3-rc6 mainline kernel">attachment 145174</a> <a href="attachment.cgi?id=145174&action=edit" title="dmesg output for v5.3-rc6 mainline kernel">[details]</a></span>
dmesg output for v5.3-rc6 mainline kernel

Hi,

we've been running 18.04 (w/ Xubuntu) + 4.15.0-47 kernel for a while now (on
Minix Z83-4 devices w/ Intel X5-Z8350 CPUs), which is working fine. I had
opened an issue at Ubuntu, but was told to report this upstream (reference:
<a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1840889">https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1840889</a>)

After upgrading the kernel to a newer version (> 4.15.0-47), HDMI output is not
available anymore, i915 reports an invalid EDID version via dmesg I dropped the
full dmesg output on Pastebin: <a href="https://pastebin.com/jXTqAzkQ">https://pastebin.com/jXTqAzkQ</a> (with
4.15.0-58-generic). Attachment contains dmesg output of mainline kernel
v5.3-rc6

As a start I'm blaming the Linux kernel / i915 since booting 4.15.0-47 kernel
works just fine.

Known faulty kernel versions are:

- Ubuntu Kernel: 4.15.0-58-generic
- Ubuntu Kernel: 4.15.0-59-generic
- Ubuntu Kernel: 5.0.0-25-generic
- Mainline Kernel: v5.3-rc6

Not sure how to best collect logs and system information for you since I'm not
used to debugging black screens. However, SSH access is possible. I am happy to
provide more information, if needed. We can also install and test experimental
kernel versions.

Note: This happens then attached via a standard HDMI cable as well as with a
HDMI-DVI cable on different monitor setups.</pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are the assignee for the bug.</li>
          <li>You are the QA Contact for the bug.</li>
          <li>You are on the CC list for the bug.</li>
      </ul>
    </body>
</html>