Ubuntu
acpi-support package

  1. Bug #68191
  2. Comment #7

Comment 7 for bug 68191

Revision history for this message
Paul Sladen (sladen) wrote :

We did some investigation into this (see bug #78512). Turns out that the kernel hotunplugs the CPUs during a suspend/resume, so the CPUs actually /disappear/ and therefore can't retain their state.

Ideally this is fixed in 'udev' in the long run with hotplug CPU support; in the medium term we'll do it in 'acpi-support' before/after suspend/resume.