r1890 - trunk/doc

alexander at linuxfromscratch.org alexander at linuxfromscratch.org
Sat May 12 05:05:39 PDT 2007

Author: alexander
Date: 2007-05-12 06:05:39 -0600 (Sat, 12 May 2007)
New Revision: 1890

Documented a better solution for ACPI-related hibernation problem

Modified: trunk/doc/README
--- trunk/doc/README	2007-05-11 09:59:05 UTC (rev 1889)
+++ trunk/doc/README	2007-05-12 12:05:39 UTC (rev 1890)
@@ -272,9 +272,6 @@
    I.e., the complete boot line may look as:
    linux LANG=ru_RU.UTF-8 TZ=Asia/Yekaterinburg resume=/dev/hda2
-   On some systems, hibernation refuses to work if ACPI is enabled. You
-   can disable ACPI by adding "acpi=off" to the kernel arguments.
    Alternatively, once the system is running, you can activate hibernation by
    echoing the major and minor numbers of the partition to /sys/power/resume as
@@ -304,6 +301,19 @@
 (even read-only, because there is no true read-only mount on journaled
+   On some systems, hibernation refuses to work due to a broken ACPI
+   implementation, with the following message in "dmesg | tail"  output:
+       acpi_pm_prepare does not support 4
+   Possible solutions:
+   a) run the following command before hibernating the computer:
+       echo shutdown >/sys/power/disk
+   b) disable ACPI completely by adding "acpi=off" to the kernel arguments.
 7) The computer will save its state to your swap partition and power down.
    This CD will remain in the drive.

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