Hi all,
I've just noticed that release candidate 765 when fully charged tells me I
have 2 1/2 hours of usage. This is a major concern, and something we really
need to fix for this release. As I tested it, it appeared to get about a
minute or two to each percentage of battery. Below are some initial results
as I know people want them sooner rather than later :)
I was asked in #olpc to see if ohmd is running. It is. Anything else I can
check for? I found that by default the "power savings" option was turned
off. I turned it on for one of the test laptops below.
All laptops were simply turned on and the mouse hovered over the battery
symbol for status, no apps were run nor other activity run.
The % is the indicated remaining battery time.
Test 1 - default 765 image
765 started at (98%) fully charged
64% 1.48hrs remaining @ 65 mins running time
50% 1.24hrs remaining @ 98 mins running time
45% 1.16hrs remaining @ 108 mins running time
Estiamted time = ~2 1/2 - 3hrs
Test 2 - default 765 image but with power savings on
765 started at (93%) mostly charged with power savings turned on
and rebooted
93% @ 0 mins running time
92% @ 2.35 10 mins running time
90% @ 2.32 35 mins running time
90% @ 2.32 41 mins running time
90% @ 2.32 50 mins running time
Estimated full time = ~10hrs+
Test 3 - default 711 image
711 build started at (97%) fully charged (no percentage available)
94% @ 10 mins running time
89% @ 23 mins running time
84% @ 35 mins running time
73% @ 68 mins running time
Estimated time = 4-5 hrs
Please note these are initial results and I won't know for sure until
another few hours for the first round, and a few repeats, but at least this
gets other able to start testing :)
This issue could be a major problem for this new release and if unfixed
would seriously undermine the awesome efforts of all involved in the great
changes for 8.2.0.
Just for reference I've seen trials for primary schools with other devices
and one of the main benefits of the XO over them was better power, so we
need to maintain that :) If you are interested the other main reasons were
screen size, the ease of prepacking a full suite of apps/content, the
relative cost of the wireless infrastructure needed, and the community
around OLPC.
Cheers,
Pia
--
Linux Australia http://linux.org.au/
Open Source Industry Australia http://osia.net.au/
Software Freedom Day http://softwarefreedomday.org/
"He who loves the world as his body may be entrusted with the empire."
- Lao-tzu
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