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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 - [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90896">90896</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
          </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>fraph24@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=116363" name="attach_116363" title="journalctl -k -t kernel > intel_cpu_fifo_underrun_irq_handler-kernel.txt">attachment 116363</a> <a href="attachment.cgi?id=116363&action=edit" title="journalctl -k -t kernel > intel_cpu_fifo_underrun_irq_handler-kernel.txt">[details]</a></span>
journalctl -k -t kernel > intel_cpu_fifo_underrun_irq_handler-kernel.txt

It happens when switching back from VT to X after a couple of seconds of
flickering.

It was found while investigating on:
<a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - Heavy black flickering with Intel graphics after VT switching to Mir from X"
   href="show_bug.cgi?id=88944">https://bugs.freedesktop.org/show_bug.cgi?id=88944</a>

$ cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-4.0.4-303.fc22.x86_64
root=UUID=6d95a3dd-0830-4bf9-94c1-a37232327df9 ro rootflags=subvol=root
rd.luks.uuid=luks-81064417-7468-43b9-8e39-2e5e9e332d40
rd.luks.uuid=luks-87e2654d-afaa-402c-a4a7-1d6aa1e2403b rhgb quiet
systemd.log_level=debug systemd.log_target=kmsg log_buf_len=1M drm.debug=0xe

$ uname -a
Linux winston 4.0.4-303.fc22.x86_64 #1 SMP Thu May 28 12:37:06 UTC 2015 x86_64
x86_64 x86_64 GNU/Linux

$ cat /etc/system-release
Fedora release 22 (Twenty Two)</pre>
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