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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 - Log Message Spamming - "Reducing the compressed framebuffer size...""
href="https://bugs.freedesktop.org/show_bug.cgi?id=88975">88975</a>
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<th>Summary</th>
<td>Log Message Spamming - "Reducing the compressed framebuffer size..."
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (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
</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
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<th>Reporter</th>
<td>cwawak@redhat.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>OS: Fedora 21
Kernel: Linux system 3.18.3-201.fc21.x86_64 #1 SMP Mon Jan 19 15:59:31 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux
Hardware: 2014 Lenovo Thinkpad X1 Carbon, HiDPI screen
Chipset: 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT
Integrated Graphics Controller (rev 0b)
DRI driver: i965
libdrm-2.4.58-3.fc21.x86_64
Issue:
When I enable FBC via kernel command line options (i915.enable_fbc=1), I
noticed the following message spam ~30 times a second, every second to my
journal:
[drm] Reducing the compressed framebuffer size. This may lead to less power
savings than a non-reduced-size. Try to increase stolen memory size if
available in BIOS.
This log messages seems to have come in here:
<a href="https://freedesktop.org/patch/28264/">https://freedesktop.org/patch/28264/</a>
When I remove that command line option, the log message goes away.
Expected behavior:
Having only one occurance of this log message on boot seems like plenty of
information to let me know that I am not getting quite the compression or power
savings that I would get if I could increase stolen memory size (I looked
through the BIOS, it appears that I can't, even after increasing the video
memory reservation to 512MB from 256MB).
Is there a particular reason why this message is spammed hundreds of times a
minute? Is it possible that a change be made to reduce this log spam, which
seems like it could affect battery life?
Thanks!
Chris</pre>
</div>
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