[Bug 58594] Dual Monitor eventually freezes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58594

--- Comment #7 from Keith McClelland <zismylaptop at gmail.com> ---
Note that the related launchpad bug is beginning to get some attention based on
finding that even kernel 3.8-rc5 doesn't help.

I have a refinement for my workaround. I supposed that the important thing was
to keep Xorg and compiz on the same CPU. But that is not the case. The most
important thing seems to be to run Xorg on CPU 1. Note that my computer is an
Intel Atom N280 whose two cores are is not advertised to be identical. I'd be
suspicious of hairy signal timing based on this table. (Xorg 1 means "taskset"
Xorg to CPU 1 etc.):

||                 || Xorg 1 || Xorg 2 || Xorg unpinned||
|| Compiz 1        || WORKS  || FAILS  || WORKS        ||
|| Compiz 2        || WORKS  || FAILS  || FAILS        ||
|| Compiz unpinned || WORKS  || FAILS  || FAILS        ||

All the cases that "WORK" have run with dual monitors and heavy use for more
than an hour; many hours for the Xorg 1 cases. The ones that "FAIL" have never
run more than a half hour or so under the same conditions.

Hope this helps.

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