Public bug reported:
Binary package hint: xorg
Moving a window causes Xorg to eat all available CPU on my system.
The CPU is not only used up by Xorg, but also kwin or some other
processes involved in the window movement (e.g. in Gnome gnome-terminal
used the other big part of it).
REPRODUCE:
1. Open a terminal/konsole, run top therein
2. Open another terminal
3. Grab it at the title bar and slowly move it around, so that it gets
constantly moved
EXPECTED RESULT:
CPU usage should not increase notably.
ACTUAL RESULT:
CPU usage is 100%.
CPU: AMD64 3000+
Graphic card: Nvidia 6600GT
Desktop resolution: 1920x1200
Kubuntu/Ubuntu Hardy
This happens both with the nv and nvidia drivers.
This also happens, without any xorg.conf (moved away; uses nv driver then IIRC).
I've tried the workaround posted at bug 88815 (building libx11 without
xcb), but the result was the same (I confirmed that libxcb was not
linked into /usr/lib/libX11.so.6 anymore with the new package).
The same happens with Kubuntu Gutsy in a VirtualBox, where I've tried
using valgrind/callgrind to debug X, but did not manage to do so.
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
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Moving windows is slow / uses all CPU
https://bugs.launchpad.net/bugs/179348
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