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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Performance regression on Intel 945GM since 2.20.18"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=59639">59639</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Performance regression on Intel 945GM since 2.20.18
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>self@sungpae.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/intel
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=73351" name="attach_73351" title="Xorg logfile with intel driver 2.20.19">attachment 73351</a> <a href="attachment.cgi?id=73351&action=edit" title="Xorg logfile with intel driver 2.20.19">[details]</a></span>
Xorg logfile with intel driver 2.20.19

Hello,

Regular 2D rendering has been much slower since 2.20.18 on an old
Macbook with the following specs:

    Kernel: 3.6.11-1-ARCH x86_64 (64 bit)
    Desktop: Openbox 3.5.0
    Distro: Arch Linux
    Card: Intel Mobile 945GM/GMS 943/940GML Express
          Integrated Graphics Controller
    X.Org: 1.13.1
    driver: intel
    Resolution: <a href="mailto:1280x800@59.9hz">1280x800@59.9hz</a>
    GLX Renderer: Mesa DRI Intel 945GM
    GLX Version: 1.4 Mesa 9.0.1

In particular, window redrawing is very choppy, and moving / resizing
windows is much less responsive than before.

For control, no other software was updated on the system, and a
reversion to 2.20.17 immediately fixes the problem. There are no notable
differences between the Xorg logfiles when using 2.20.17 vs 2.20.19
(attached).

I have decided to report here since the Arch package applies no patches
and configures with just --prefix=/usr --enable-dri

Thank you for the excellent software.</pre>
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