Ubuntu
acpi-support package

  1. Bug #46680
  2. Comment #21

Comment 21 for bug 46680

Revision history for this message
SonWon (jtmitche) wrote :

I just tried suspend and had a very scary thing happen.

I noticed an error message in dmesg,

ACPI-0412: *** Error: Handler for [EmbeddedControl] returned AE_TIME

So I did some Internet research and found this to fix.

Added,

noapictimer ec_burst=1

to the kernel line in /boot/grub/menu.lst. Also did a,

update-grub.

Reboot and the ACPI-0412 message was gone. Great I thought. Then I wondered if suspend would now work so I tested. Laptop shutdown normally and I had the flashing light telling me the laptop had suspended. Then I press the power button laptop powered up and promptly froze like before. Then I forced a reset by holding down the power button. Then when I tried to turn the laptop back on the power lights would only flash on for 1 second then shutdown.

I thought I bricked my laptop. However pulling the battery and waiting a few minutes brought her back to life.

I am also getting a,

ACPI: Looking for DSDT ... not found!

message.

I hope this can help to isolate the problem.