Hi Sriram <reposting - forgot to add linux-pm to senders' list> On Sat, Nov 21, 2009 at 10:07 PM, Sriram V <vshrirama@xxxxxxxxx> wrote: > Hi, > I am trying to test pm on a custom board with android. What android version are you usnig ? > Whats happening: > 1) Android is putting the system to sleep - calling system wide suspend > 2) During suspend, kernel resume immediately - I get "wakeup wake lock: > omap-8250-serial". and again puts it back to suspend. > 3) This keeps happening, There is no serial activity except for printing > the messages (transmission from the board) - No serial inputs from the host > pc. > 4) Is there any way to disable this? > We encountered a similar problem while booting android on one of our board. One way is to acquire a partial wake lock (or just a wakelock in the newer versions of android) as soon as you boot up the board. In older android version, the way was : echo wakelock1 > /sys/android_power/acquire_partial_wake_lock or on newer versions : echo wakelock1 > /sys/power/wake_lock Please check the path as I do not have access to the board right now. Acquiring the wake lock will prevent your system from going into sleep. However, this is a temporary solution as you still need to figure out why is your device not able to go to sleep. Hope that helps... Regards, Aneesh _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
