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<th>Priority</th>
<td>medium
</td>
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [i915] [Regression] Generalized slowness after upgrade to kernel 3.10"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73064">73064</a>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>Summary</th>
<td>[i915] [Regression] Generalized slowness after upgrade to kernel 3.10
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Reporter</th>
<td>jonathan.protzenko+fdo@gmail.com
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Product</th>
<td>xorg
</td>
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<pre>Bug description:
When running the 3.9 kernel everything is fine. However, starting with kernel
3.10, I experienced generalized slowness related to graphics operations.
Drawing an entire page in Firefox, or switching desktops are slow operations.
There's a delay (I would say 0.2s) whenever a large portion of the screen needs
to be repainted. If I try to switch desktops repeatedly, the whole thing gets
slower and then there's a one-second delay before the desktop switches
complete.
Gratuitous hypothesis: there used to be a warning about the turbo mode being
disabled which disappeared in 3.10. I somehow feel like the frequency of the
graphics chip is too low for it to perform operations in a timely manner.
I'm not a regular at bugs.freedesktop.org, so please bear with me if the
information below is incomplete. In any case, I'd be happy to provide more
information if you tell me how to do it!
Thanks,
~ jonathan
Information about my setup:
computer: dell laptop e6410 (without the nvidia card, just the integrated intel
chipset)
product: Core Processor Integrated Graphics Controller [8086:46]
vendor: Intel Corporation [8086]
xserver and intel driver versions:
[ 37.721] xorg-server 2:1.14.3-5 (Maarten Lankhorst
<<a href="mailto:maarten.lankhorst@ubuntu.com">maarten.lankhorst@ubuntu.com</a>>)
[ 38.415] (II) Module intel: vendor="X.Org Foundation"
[ 38.415] compiled for 1.14.3, module version = 2.21.15
[ 38.415] Module class: X.Org Video Driver
[ 38.415] ABI class: X.Org Video Driver, version 14.1
machine: debian testing x86_64
glxinfo:
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
OpenGL version string: 2.1 Mesa 9.2.2
OpenGL shading language version string: 1.20
libdrm:
jonathan@ramona:~ $ pkg-config --modversion libdrm
2.4.49</pre>
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