Kevin, thanks for giving HWMMU one more try. I expect that it
should work.
But please note that the HWMMU option is only supported on
some CPU types. If you CPU doesn't support it, the settings
will be silently ignored.
To know if the settings take effect run the grep command that
I listed in my Nov. 23rd posting in this thread.
Also, we believe that we understand what is causing the
hang and have developed a fix for the problem. We are
tracking this as bug 789483. The fix is in 5.0 update 1.
Meanwhile, the HWMMU setting should completely work
around the problem that we found.
Thanks,
Ole