Conor Wynne wrote:
> Battery life sucks @ 3.5 hours. That makes it worse than useless.
> Linux or not, its just not good enough. Should be ten hours with a
> teeney screen like that. I suspect LINUX power management.
>> I know I only used linux on an ibook g4, but man, it was rubbish power
> wise. Over an hours less run time for the same charge.
> Does anyone have decent PM on a linux laptop -- running on battery I mean...
>> What's with the teency disk anyway? 8GB? That's just rubbish.
>Not Linux fault. The battery must be too small. It should have been
designed for 8 to 10hrs. It shouldn't need any power management bar
turning of the backlight or screen altogether if desired.
I have two laptops, one with Ubuntu and an older one with XP and VMware
to run 3 versions of Linux. I have all power management turned off on XP
(for performance) and get over 2hrs. However it does drop from
1800MHz to 1200MHz on battery or on a 70W PSU. You only get 1800MHz
on 90W PSU. This is a BIOS feature. Inspiron 8200 1600x1200 screen, 120G
drive, 768M RAM and P4 desktop CPU. If I dim display and set HD Driver
to power down I get almost 3 hrs.
It's Flash memory. No disk. A lot of Flash based embedded CPU devices
only have 4M Flash. yes Four Megabyte and run Linux. For a decent ARM
based equivalent to Eeee PC, 1G would be fine. 4G is not bad for Linux
x86. I used to install RH6 on 2G disks.
I built an ARM based 320x240 touchscreen and with 2 x small LiPoly ipod
2200mA cells, 5Mbps Mobile Internet and NO power management I get nearly
4 hrs. (Linux)
I fitted 9.8V worth of NiMH AA cells to a MIPS based Router and with
WiFi and Mobile Internet Modem @ 5Mbps I got 4hrs 15min regularly. (Linux)
So yes the 3.5hrs on this class low power optimised CPU is poor.
Obviously the battery needs to be 3 times bigger.
>> On Nov 17, 2007 9:55 AM, Michael Watterson <watty at eircom.net> wrote:
>>> Patrick O'Connor wrote:
>>>>> Unfortunately Beltronics sold out of their batch already so the best option
>>> to get a 4G before Christmas might be expansys. It says on their site that
>>> they offer a discount for more than 5 units so I'll mail them Monday to see
>>> what they can do.
>>> I'd prefer an 8G myself but I haven't heard anything conclusive about
>>> delivery before Christmas.
>>> I'll update everyone who registered interest once I hear back from expansys.
>>>>>>>>http://www.rm.com/LEA/Products/product.asp?cref=PD1030046>>>> I think the 8G is needed. Not much space left on 4G.
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