[hafqa] [hafqa] [Bug 2602] Battery drain low or empty overnight

[From: bugzilla-daemon at maemo.org]

https://bugs.maemo.org/show_bug.cgi?id=2602


eero.tamminen at nokia.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |eero.tamminen at nokia.com
  BugsThisDependsOn|                            |1760, 1842, 3022
          Component|Kernel                      |general
           Keywords|                            |use-time
          QAContact|linux-kernel-bugs at maemo.org |hafqa at maemo.org




------- Comment #28 from eero.tamminen at nokia.com  2008-06-25 14:50 GMT+3 -------
To summarize the reasons for battery drain:
1. bad (3rd party) applications or applets
   - do polling, use WLAN frequently or write lot to disk
     (which needs JFFS2 GCing)
    - are CPU usage applets idle when screen is blanked?
2. RD mode (it's not cleared by re-flashing the device!)
3. WLAN APs with bad power management (not following the specs)
4. SD cards with bad power management?
5. Some setting(?) in restored OS2007 backup
6. metalayer-crawler when it encounters a corrupted memory card
   or bad (VMA?) media file

The issue is not in kernel or in device in general, but in specific
programs or external hardware (maybe corresponding device drivers
could be able to work around some the issues once buggy HW is identified).

I guess this can serve as a meta-bug, but specific bugs should be
added for the actual issues.  I added the crawler bugs and FM-radio
applet bug, you could add other issues as dependencies.

Switching device to offline mode from the power menu when it's not
used can help with 1) and 2).


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