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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 - [SKL] Glitches with HiDPI monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103768">103768</a>
</td>
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<th>Summary</th>
<td>[SKL] Glitches with HiDPI monitor
</td>
</tr>
<tr>
<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>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<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>
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<th>Reporter</th>
<td>pmenzel+bugs.freedesktop@molgen.mpg.de
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>With Linux 4.14 (and before) using the HiDPI monitor Dell UP3214Q with libdrm
2.4.88, and X.Org X Server 1.19.5, and Xfce moving a window and switching
workspaces there are quite a lot of glitches. Moving the terminal window, the
borders stay not in line for example.
```
$ lspci -nn -s 0:02.0
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530
[8086:1912] (rev 06)
$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 8192 x 8192
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
DP-2 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 698mm x
392mm
3840x2160 30.0*+ 30.0 30.0
2560x1440 60.0
1920x1200 59.9
1920x1080 60.0 60.0 50.0 59.9 24.0 24.0
1920x1080i 60.1 50.0 60.0
1600x1200 60.0
1680x1050 60.0
1280x1024 75.0 60.0
1280x800 59.8
1152x864 75.0
1280x720 60.0 50.0 59.9
1024x768 75.0 60.0
800x600 75.0 60.3
720x576 50.0
720x480 60.0 59.9
640x480 75.0 60.0 59.9
720x400 70.1
HDMI-3 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
```
Is that expected due to the 30 frames per second, or should there be no
glitches.</pre>
</div>
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