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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Portal 2 FPS goes below 5 in several places"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88700">88700</a>
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<th>Summary</th>
<td>Portal 2 FPS goes below 5 in several places
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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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
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>idr@freedesktop.org
</td>
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<th>Reporter</th>
<td>imamdxl8805@gmail.com
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<div>
<pre>While playing Portal 2 the FPS range is 40~12 depending on the scene and
graphics details in the settings but the game mostly playable. However, in
several areas throughout different levels the FPS goes below 5 and even becomes
1~2 making it really hard to keep moving forward with the game. These
problematic places do not look very different from the rest of the non
problematic places. My guess is, there must be some sort of software fallback
in these areas. I have found similar problem with the game Trine released by
Humble Bundle but it may be different issue.
System:
Kubuntu 14.10
Linux kernel 3.16.0-29-generic
Mesa 10.5.0-devel (git-7a182d2) using oibaf ppa
<a href="https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers">https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers</a>
X.Org X Server 1.16.0
Intel Bay Trail, device id: 0f31</pre>
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