Openmoko Bug #2302: led blinks even when brightness is set to 0

Openmoko Public Trac bugs at
Tue Jul 28 00:59:27 CEST 2009

#2302: led blinks even when brightness is set to 0
 Reporter:  lindi            |          Owner:  openmoko-kernel
     Type:  defect           |         Status:  new            
 Priority:  normal           |      Milestone:                 
Component:  System Software  |        Version:  unspecified    
 Severity:  normal           |       Keywords:  led trigger    
 Haspatch:  0                |      Blockedby:                 
Estimated:                   |    Patchreview:                 
 Blocking:                   |   Reproducible:                 
 Steps to reproduce:
 1) echo timer > /sys/class/leds/gta02-aux:red/trigger
 2) echo 300 > /sys/class/leds/gta02-aux:red/delay_on
 3) echo 700 > /sys/class/leds/gta02-aux:red/delay_off
 4) echo 0 > /sys/class/leds/gta02-aux:red/brightness
 5) cat /sys/class/leds/gta02-aux:red/trigger

 Expected results:
 5) LED is OFF and trigger is none since Documentation/leds-class.txt says

 "You can change the brightness value of a LED independently of the timer
 trigger. However, if you set the brightness value to LED_OFF it will also
 disable the timer trigger."

 Actual results:
 5) LED keeps blinking and trigger is still timer:

 none rfkill0 nand-disk rfkill1 mmc0 adapter-online usb-online ac-online
 battery-charging-or-full battery-charging battery-full [timer] netdev
 backlight mmc1

 I am using andy-tracking  d1c828aa7073b356207b967e394d on gta02V5.

Ticket URL: <> <>
openmoko trac

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