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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [All - Bisected] slow cursor movements with atomic plane helpers"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88540">88540</a>
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<th>Summary</th>
<td>[All - Bisected] slow cursor movements with atomic plane helpers
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>rodrigo.vivi@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=112399" name="attach_112399" title="dmesg">attachment 112399</a> <a href="attachment.cgi?id=112399&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes.
Non-working platforms: I've faced on BDW and BSW but I believe it can affect
all platforms.
==kernel==
drm-intel-nightly: 2015y-01m-17d-09h-41m-12s UTC integration manifest
==Bug detailed description==
System gets impossible to use due very slow cursor movements.
bisect took me to the point we change to atomic plane helpers, but it can be a
miss usage of atomic helpers everywhere else.
drm/i915: Move to atomic plane helpers (v9)
attached dmesg shows many calls of drm_atomic_set_fb_for_plane whenever moving
cursor.
[ 103.143044] [drm:drm_atomic_set_fb_for_plane] Set [FB:45] for plane state
ffff88009a1ce680
[ 103.159720] [drm:drm_atomic_set_fb_for_plane] Set [FB:45] for plane state
ffff88009a1ce300
[ 103.176653] [drm:drm_atomic_set_fb_for_plane] Set [FB:45] for plane state
ffff88009a1ce680
[ 104.696065] [drm:drm_atomic_set_fb_for_plane] Set [NOFB] for plane state
ffff88009b0a2600
==Reproduce steps==
Just boot a system with kde environment and *try* to use the cursor.</pre>
</div>
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