I can confirm that <a href="https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/104185/comments/8">James Walker's changes</a> fix the issue.
I didn't have the file /etc/acpi-support, instead I made the change in /etc/default/acpi-support.
I can confirm that <a href="https:/ /bugs.launchpad .net/ubuntu/ +source/ linux-source- 2.6.20/ +bug/104185/ comments/ 8">James Walker's changes</a> fix the issue.
I didn't have the file /etc/acpi-support, instead I made the change in /etc/default/ acpi-support.