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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] enable_psr=1 on 4.15 causes rapid hangs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104918">104918</a>
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<th>Summary</th>
<td>[SKL] enable_psr=1 on 4.15 causes rapid hangs
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<th>Product</th>
<td>DRI
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>Other
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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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>luto@kernel.org
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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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<p>
<div>
<pre>With enable_psr=1 on a 4.14 Fedora kernel, I have some minor lag issues, but
everything works. On 4.15, the system dies very quickly with PSR enabled, and
the logs say:
[drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR*
[CRTC:37:pipe A] flip_done timed out
I'll follow up if I dig out more useful info.</pre>
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