https://bugzilla.kernel.org/show_bug.cgi?id=42646

           Summary: keyboard is lit up when computer is in sleep mode
           Product: ACPI
           Version: 2.5
    Kernel Version: 3.0.0-15-generic
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: low
          Priority: P1
         Component: Power-Sleep-Wake
        AssignedTo: acpi_power-sleep-w...@kernel-bugs.osdl.org
        ReportedBy: illumil...@gmail.com
        Regression: Yes


After reading the documentation at
http://www.kernel.org/doc/Documentation/usb/persist.txt , I made it so the file
persist was 0 in all of my usb entries in /sys/bus/usb/devices, however, the
keyboard lights on my usb hub keyboard will still SOMETIMES come back on after
the computer goes to sleep. It is not consistent, which is what confuses me the
most. According to the documentation, the power on my usb keyboard should stay
cut off and not come back on during computer sleep.
Using kubuntu 11.10



rc.local:

echo 0 > /sys/bus/usb/devices/4-4/power/persist
echo 0 > /sys/bus/usb/devices/4-3/power/persist
echo 0 > /sys/bus/usb/devices/5-2/power/persist
echo 0 > /sys/bus/usb/devices/usb5/5-2/power/persist
echo 0 > /sys/bus/usb/devices/usb4/4-3/power/persist
echo 0 > /sys/bus/usb/devices/usb4/4-4/power/persist


/sys/bus/usb/devices$ ls
1-0:1.0  4-0:1.0  4-3:1.0    4-4      5-0:1.0  6-0:1.0  9-0:1.0  usb3  usb6 
usb9
2-0:1.0  4-3      4-3.1:1.0  4-4:1.0  5-2      7-0:1.0  usb1     usb4  usb7
3-0:1.0  4-3.1    4-3.1:1.1  4-4:1.1  5-2:1.0  8-0:1.0  usb2     usb5  usb8

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