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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 - [CHV] Mouse cursor flicker on external display, rendering artifacts under cursor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106935">106935</a>
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<th>Summary</th>
<td>[CHV] Mouse cursor flicker on external display, rendering artifacts under cursor
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</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>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</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>
<tr>
<th>Reporter</th>
<td>russianneuromancer@ya.ru
</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=140179" name="attach_140179" title="debug dmesg with drm-tip kernel">attachment 140179</a> <a href="attachment.cgi?id=140179&action=edit" title="debug dmesg with drm-tip kernel">[details]</a></span>
debug dmesg with drm-tip kernel
Hello!
I find that mouse cursor is always flicker on external displays attachable to
CherryTrail-based Dell 5855 tablet.
modesettings DDX (Ubuntu Defaut) - cursor flicker frequently on all movement,
artifacts under cursor, sometimes long tail (for example above terminal window
with changing content, or above Nautilus that render loading animation) link to
video is below
Intel DDX, DRI3 - same as with modesetting DDX.
Intel DDX, DRI2, HWCursor - cursor flicker when content below cursor is
changes, but don't left tail
Intel DDX, DRI2, SWCursor - almost same as HWCursor, but seems like cursor
flickering start not after boot or after web-browser, Nautilus or terminal
launch, but few minutes later.
Video for DRI3 variant of this issue:
<a href="https://mega.nz/#!JNpBharA!giDibmmE9he9NkqR13pGncLrxCCZhoIY27K3cU7vRsY">https://mega.nz/#!JNpBharA!giDibmmE9he9NkqR13pGncLrxCCZhoIY27K3cU7vRsY</a> (please
pay attention to the ending).
Attached dmesg debug from boot with Intel DDX, DRI3 (moving gnome-recorder
above htop, then just moving cursor above htop, cursror left very long tail).
Hardware:
Dell 5855 tablet with Intel Atom x5-Z8500
Tested docking soltuions:
1. Dell Dock WD15
2. Dell S2718D display attached to tablet directly via USB-C
3. Belkin USB-C 3.1 Express Dock HD
No difference was found, cursor flicker with all three. However, there is no
such issue if I attache Skylake and KabyLake-based laptops to listed docks.
Software:
Ubuntu Gnome 17.04-18.04 x86_64
Linux 4.11-4.17.1, drm-tip/2018-06-16
(02d8db1a894b0e646b2debd64ce24b8e99fd2ffd)
Mesa 1.17.0-18.0.0rc5
libdrm: 2.4.80-2.4.91
xserver-xorg-video-intel: 2.99.917+git20170309 - 2.99.917+git20171229
xserver-xorg-core: 1.19.3-1.19.6
As far I know this is not regressions, as I seen this issue at least 1.5-2
years ago, display support starting to work on this tablet (before there was
just black screen).</pre>
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