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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Xserver opengl problems on i5-8259U"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108349">108349</a>
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<th>Summary</th>
<td>Xserver opengl problems on i5-8259U
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
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<th>Reporter</th>
<td>caravena@gmail.com
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Hello,
Open bug in launchpad.net
<a href="https://bugs.launchpad.net/bugs/1797604">https://bugs.launchpad.net/bugs/1797604</a>
"I have installed 18.04.1 server on Intel NUC NUC8i5BEH with minimal xinit and
xserver-xorg-video-intel. But it has 2 major issues:
1. Huge Xorg CPU usage with intel driver...more than 110% on glxgears without
vsync (with modesetting driver Xorg has zero CPU usage and very good Opengl
performance)
2. on DRI3 glxgears it skip most frames and display one frame every 60-70
frames but reported FPS is doubled than on DRI2
to reproduce a problem install fresh server image of 18.04 and then install
minimal xinit+xserver-xorg-video-intel. Put 20-intel.conf to enable intel
driver. Run X by startx and then run glxgears.
20-intel.conf:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "TearFree" "true"
# Option "DRI" "3"
EndSection
P.S. Before 18.04 I tried 16.04 with HWE kernel...on stock Xserver and Intel
driver it just crash. On latest HWE xserver and HWE Intel driver it works the
same as 18.04 because it has the same versions. But with old 1.18 xserver and
HWE intel driver it works in DRI2 mode...Xorg CPU usage just 10% instead of
110% on xserver 1.19...The only problem - poor OPENGL performance (glxgears
5400 fps vs 8000 fps on 1.19 xserver)"
Best regards,
--
Cristian Aravena Romero (caravena)</pre>
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