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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - glXWaitForMscOML and glXWaitVideoSyncSGI may block indefinitely"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110697#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - glXWaitForMscOML and glXWaitVideoSyncSGI may block indefinitely"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110697">bug 110697</a>
from <span class="vcard"><a class="email" href="mailto:acc12345acc@gmail.com" title="acc12345acc@gmail.com">acc12345acc@gmail.com</a>
</span></b>
<pre>Sure.
- CPU: Intel Core i5-3210M
- GPU: Intel HD Graphics 4000
- Distribution: Arch Linux
- Kernel version: 5.0.7-arch1-1-ARCH
- Mesa version: 19.0.4
- X.Org version: 1.20.4
- Using modesetting driver
- /etc/X11/xorg.conf.d/20-i.conf:
```
Section "Screen"
Identifier "default"
DefaultDepth 24
EndSection
```
The test case has been mentioned already. However I forgot to include
reproduction steps:
1. Compile kwin-lowlatency (mkdir build && cd build && cmake .. && make)
2. Launch it with `QT_PLUGIN_PATH="$PWD/bin" ./bin/kwin_x11 --replace`
3. Move a window to the top left corner as quick as possible and then shake it
horizontally
4. Keep trying until it freezes (it usually does on the first or second try)</pre>
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