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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - 4.9.62: intermittent flicker after upgrade from 4.9.61"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103796">103796</a>
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<th>Summary</th>
<td>4.9.62: intermittent flicker after upgrade from 4.9.61
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>jrf@mailbox.org
</td>
</tr>
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<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>
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<pre>After upgrading from 4.9.61 there's an intermittent flicker when entering the
first character in a terminal, editor, input-box or even randomly without any
action from my side.
dmesg shows:
...
[drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[drm:ironlake_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun
[drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[drm:ironlake_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun
...
CPU: Intel Core i3
Can't bisect this at the moment but I've seen this before:
<a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - drm/i915: Intermittent flicker (bisected)"
href="show_bug.cgi?id=97283">https://bugs.freedesktop.org/show_bug.cgi?id=97283</a>
A bad i915-related backport, I think.</pre>
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