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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [drm] HPD interrupt storm detected on connector HDMI-A-1 : switching from hotplug detection to polling"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106675">106675</a>
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<th>Summary</th>
<td>[drm] HPD interrupt storm detected on connector HDMI-A-1 : switching from hotplug detection to polling
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>major
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>aether@disroot.org
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<pre>Bug description: After X starts, this message apepars randomly in dmesg :
[drm] HPD interrupt storm detected on connector HDMI-A-1 : switching from
hotplug detection to polling
When it happens, the display freezes (including sound) for a few seconds,
sometimes more (to the point I'm forced to hard shutdown)
System environment:
-- chipset: GM45
-- system architecture: 64-bit
-- xf86-video-intel: 1:2.99.917-1
-- xserver: 1.19.3
-- mesa: 2.1 Mesa 17.0.5
-- kernel: 4.9.102
-- Linux distribution: Hyperbola GNU/Linux
-- Machine or mobo model: Thinkpad T400 R8KMZN2
-- Display connector: Internal (LVDS) 1440x900
Reproducing steps: Start X, after a few seconds (or minutes), the display
freezes, when it happens, this message appears in dmesg :
[drm] HPD interrupt storm detected on connector HDMI-A-1 : switching from
hotplug detection to polling
Additional info:
- T400 is running Libreboot bios, the issue happens with late KMS and early
KMS.
->>> Issue is not present with 4.16.12 kernel <<<-</pre>
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