On Mon, Jan 24, 2011 at 4:28 AM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: > On Sunday, January 23, 2011, Jeff Chua wrote: >> On Sun, Jan 23, 2011 at 3:12 AM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: >> > On Saturday, January 22, 2011, Jeff Chua wrote: >> >> 2011/1/22 Rafael J. Wysocki <rjw@xxxxxxx>: >> >> > On Saturday, January 22, 2011, Jeff Chua wrote: >> Strange. If I didn't offline, it hanged during suspend even without >> thinkpad_acpi. I could see that the suspend code does the offline >> automatically, but executing the offline before calling suspend makes >> it no hanging. > > That means there's a problem in the CPU hotplug code that manifests itslef > during suspend. Is this 100% reproducible? Did it happen with 2.6.37? Quite reproducible. Once "something" trigger the hang, no matter how I reset the system, it'll still hang at suspend. And at other times, it just worked. I tried many things, but it seems if I go back to use an earlier version (2.6.37 works perfectly for suspend-to-disk/mem), then switched back to the newer broken version, it'll work for a few cycles before hanging at suspend-to-disk. I guess it could be CPU hotplug, and may be that thinkpad-acpi is triggering the broken cpu hotplug to fail. Jeff _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
