Re: Desktop and S3 suspend the Holy Grail of ACPI?

[Huw Rogers <count0-tC47gz4GrgtWk0Htik3J/w@public.gmane.org>]

You can enable S1/S3 with SMP with the "noirqbalance" boot parameter (to
disable kirqd which refuses to die during suspend) and this patch:

diff -Nru a/kernel/power/main.c b/kernel/power/main.c
--- a/kernel/power/main.c	2004-01-09 01:59:19.000000000 -0500
+++ b/kernel/power/main.c	2004-01-25 19:59:35.000000000 -0500
@@ -144,11 +144,13 @@
 	if (down_trylock(&pm_sem))
 		return -EBUSY;
 
+#if 0
 	/* Suspend is hard to get right on SMP. */
 	if (num_online_cpus() != 1) {
 		error = -EPERM;
 		goto Unlock;
 	}
+#endif
 
 	if (state == PM_SUSPEND_DISK) {
 		error = pm_suspend_disk();

-Huw
-- 
Huw Rogers <count0-tC47gz4GrgtWk0Htik3J/w@public.gmane.org>



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