@Thilo-Alexander, I am having the exact same problem as you! I am developing a download manager for a particular site and have a service that aquired PARTIAL_WAKE_LOCK, but when the screen blanks (I press power) the download pauses. Downloads make no progress at all when the screen is off. If I do a FULL_WAKE_LOCK, I get the expected behavior (screen/ CPU are on full blast).
Did you ever find a solution? -Jack On Apr 25, 1:23 pm, Thilo-Alexander Ginkel <th...@ginkel.com> wrote: > On Apr 25, 9:59 pm, Thilo-Alexander Ginkel <th...@ginkel.com> wrote: > > > > The weird thing is, the problem goes away if I use > > > SCREEN_DIM_WAKE_LOCK instead. But I really don't want to drain my > > > users' batteries needlessly. > > > That looks somewhat similar to the problem I described at: > > http://groups.google.com/group/android-developers/browse_thread/threa... > > > Seems as if HTC are applying some very aggressive power saving when > > the screen is turned off. Unfortunately, I do not yet have a solution > > (there must be one [most likely undocumented] as the native phone > > application is not affected). > > After reading the PowerManager source code, I figured out that there > seems to be an undocumented wake lock for the CPU, which is used along > with a SCREEN_DIM_WAKE_LOCK, but not with a PARTIAL_WAKE_LOCK: > > -- 8< -- > private static final int WAKE_BIT_CPU_STRONG = 1; > private static final int WAKE_BIT_CPU_WEAK = 2; > [...] > > /** > * Wake lock that ensures that the CPU is running. The screen > might > * not be on. > */ > public static final int PARTIAL_WAKE_LOCK = WAKE_BIT_CPU_STRONG; > [...] > > /** > * Wake lock that ensures that the screen is on (but may be > dimmed); > * the keyboard backlight will be allowed to go off. > */ > public static final int SCREEN_DIM_WAKE_LOCK = WAKE_BIT_CPU_WEAK | > WAKE_BIT_SCREEN_DIM; > -- 8< -- > > Can you try what happens if you acquire the wake lock with the > WAKE_BIT_CPU_WEAK set? I'd try it myself, but am a little short on > time right now. > > Regards, > Thilo > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group > athttp://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
