(In reply to Comment #29 and #30) Hi Christopher,
I tested Ubuntu 11.10 without installing it (i.e., Try Ubuntu without installing) on ASUS P4S8X-MX mainboard. I will say that Ubuntu 11.10 does not suffer from the USB instant wakeup bug that currently exists in Ubuntu 12.04. Here is what /proc/acpi/wakeup looks like, $ cat /proc/acpi/wakeup Device S-state Status Sysfs node UAR1 S4 *disabled pnp:00:08 PS2K S4 *enabled pnp:00:0c PS2M S4 *disabled pnp:00:0d EUSB S3 *disabled pci:0000:00:03.3 USB S3 *disabled pci:0000:00:03.0 USB2 S3 *disabled pci:0000:00:03.1 USB3 S3 *disabled pci:0000:00:03.2 AC97 S4 *disabled pci:0000:00:02.7 MC97 S4 *disabled PCI1 S4 *disabled PCI2 S4 *disabled PCI3 S4 *disabled MAC S4 *disabled pci:0000:00:04.0 Instant wakeup is not happening because Status for EUSB and USBx devices are at *disabled state. In Ubuntu 12.04 (Linux 3.2), they will all be at *enabled state. Just to confirm the Linux kernel version, $ uname -r 3.0.0-12-generic The result here is in line with what Lan Tianyu discussed in Comment #26 of this same bug report I submitted over there at kernel.org. https://bugzilla.kernel.org/show_bug.cgi?id=47991#c26 Regards, fpgahardwareengineer -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1068393 Title: [Ubuntu 12.04.1 LTS 32-bit] SiS chipset USB wakes up the system from ACPI S3 State instantaneously bug To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1068393/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs