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: [email protected]
ReportedBy: [email protected]
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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