Ubuntu

acpi_ec_wait timeout

Asked by Daniel Timmerhindrick

When I try to start the livecd of Hardy on my Sony Vaio, I get this error while booting:

-------------
Starting up.....
[16.825635] ACPI: EC: acpi_ec_wait timeout, status = 0, expect_event = 1
[16.825686] ACPI: EC: read timeout, command = 128
-------------

I can turn acpi off in the boot options but this is just a workaround and no solution for me.
In Gutsy there wasn't an error like this one.

Any ideas?

Thanks!

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Daniel Timmerhindrick
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Bhavani Shankar (bhavi) said : 		#1

hello

Workaround is hitting f6 and inserting acpi=off kernel parameter

Solution would be (preferably after installing ubuntu because live CD loads from the RAM)

: Give the following command in a terminal (applications -> accessories -> terminal)

 gksudo gedit /boot/grub/menu.lst

Then add "acpi=off" to the end of the # defoptions line:

    # defoptions=ro quiet splash acpi=off

Your defoptions line may differ a little, just add the recommended text to the end of the line, save the file, then close the editor.

Afterwards, in a terminal, run:

    $ sudo update-grub

This will update grub to use the new option. Afterwards, reboot, and then run the system again and review for speed..

Hope it helps

Bhavani Shankar.

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Daniel Timmerhindrick (dan1el) said : 		#2

Thanks for your reply.

Yes, you descripe my workaround :-)
But I want to use the features of ACPI on my notebook. I don't want to turn it off.

Revision history for this message
Daniel Timmerhindrick (dan1el) said : 		#3

With 7.10 ACPI worked fine. I think this is a problem with the new kernel.

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Daniel Timmerhindrick (dan1el) said : 		#4

I close this topic and refer to: https://bugs.launchpad.net/linux/+bug/191137

Thanks!