[Q] Question about a wakelock (Ouch) [Solved]

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Take a look at my wakelocks. For some reason, calendar is holding one entirely too long. My Gmail wakelock seems a little high too, but not out of the ordinary (I receive and send a lot of emails during the day). I noticed the calendar wakelock when it was at 37 minutes. I thought it may have been because I leave calendar notifications in the status bar. Cleared them - no luck, still holding it. Went to calendar settings and turned off notifications - no luck, still holding it. Weird thing is my battery life has still been pretty good, but my device shouldn't be working that hard, for that long.

Does anyone know what "StartingAlertService" (associated with calendar) is? I need some help in pinpointing exactly how to stop this wakelock. Not using the calendar (or using an alternate one) is not an option.

Solution:

Originally Posted by rodries

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The problem is in TouchWizCalendar.apk not releasing the wakelock properly in class ServiceHandler inside class AlertService

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The touchwiz calendar from his thread fixes the problem. It will work on any Samsung-based rom, 9100 hellraised or i777 bases.

Originally Posted by Simba501

Take a look at my wakelocks. For some reason, calendar is holding one entirely too long. My Gmail wakelock seems a little high too, but not out of the ordinary (I receive and send a lot of emails during the day). I noticed the calendar wakelock when it was at 37 minutes. I thought it may have been because I leave calendar notifications in the status bar. Cleared them - no luck, still holding it. Went to calendar settings and turned off notifications - no luck, still holding it. Weird thing is my battery life has still been pretty good, but my device shouldn't be working that hard, for that long.

Does anyone know what "StartingAlertService" (associated with calendar) is? I need some help in pinpointing exactly how to stop this wakelock. Not using the calendar (or using an alternate one) is not an option.

Man that's weird... High sync wakelock usage seems like what I call "gmail weak-signal battery rape". Battery would start dropping like a rock if the phone lost signal at certain points during the sync cycle without the cpuidle fix. Things got much better after implementing the cpuidle fix in the kernel, but drain would still be much higher than normal. However your calendar wakelock doesn't seem to be related to sync. I suggest Googling it, or try temporarily disabling calendar sync.

Does this only happen when in weak signal areas?

Originally Posted by Entropy512

Man that's weird... High sync wakelock usage seems like what I call "gmail weak-signal battery rape". Battery would start dropping like a rock if the phone lost signal at certain points during the sync cycle without the cpuidle fix. Things got much better after implementing the cpuidle fix in the kernel, but drain would still be much higher than normal. However your calendar wakelock doesn't seem to be related to sync. I suggest Googling it, or try temporarily disabling calendar sync.

Does this only happen when in weak signal areas?

I know, I thought the same thing. I'll keep looking around. It finally stopped at 1 hr 14 mins of wakelock. I hadn't figured out anything else to change so it stopped on its own. If it picks back up again, I'll disable sync in an attempt to gather more information. I've been in a pretty weak signal area for most of the day. I'll monitor it when in other coverage situations.


Update: So I found a HTC Hero thread over a year old over at AndroidForums and it appears that the remedy is to clear data of the calendar application (there were 3 in manage applications that were associated with calendar, so I cleared them all) and re-sync. I had to uncheck and recheck the sync option for Google Calendar, which is what brought my events back. Like I mentioned, the wakelock ended up stopping on its own, but hopefully this will prevent it from occurring again.

Originally Posted by cjberg @ AndroidForums

I was having the same problem. I rebooted the phone, went in to the manage applications list and hit clear cache and clear data in the calendar app. Then I went to accounts & sync and re-synced the calendar and it has been working fine ever since. I also use spare parts to monitor the battery useage and awake time, so I can see if it ever pops up again. Been about a week now and the calendar is not keeping my phone awake any longer.

Solution thread link

OK, so it was a variation on sync battery rape.

I know if you have a Google service that doesn't seem to be syncing reliably (missing events in Calendar, missing emails in Gmail), clearing data for that app usually fixes it.

I have the similar issue but uncheck the calendar sync for my Hotmail solves the problem (just as it did on my Captivate 2.3 ROM). I can't believe Samsung hasn't address the Hotmail calendar sync bug yet.