Linked by Thom Holwerda on Mon 8th Feb 2010 23:55 UTC
Windows The past few weeks or so, there's been a lot of interest in a supposed battery status report bug in Windows 7. After installing Windows 7, some users reported seeing "consider replacing your battery"-warnings in systems that appeared to be operating just fine on Windows XP or Vista. After extensive research, Steven Sinofsky has now explained on the Engineering 7 blog that the fault is not with Windows 7 - it really, really is your battery.
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RE[2]: Two issues
by umccullough on Tue 9th Feb 2010 03:41 UTC in reply to "RE: Two issues"
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I suspect, personally, it was the result of badly-behaved acpi bios coupled with no acpi drivers for win 7 on those machines, while XP and Linux both had support for all the ACPI features once configured. As is typical with Windows, the majority of problems aren't caused by Windows itself but by incompatible and/or poorly-written drivers.

I'm fairly certain that, unless the manufacturer of your BIOS is an idiot, ACPI-based power management shouldn't really require any special drivers. I mean, that's sort of the whole point of standardizing that isn't it?

I've read that some BIOS will serve up different ACPI tables based on the OS they detect is running. A lot of retarded manufacturers have hardcoded their ACPI tables to spit out something different if they don't detect Windows XP... perhaps that is what you're referring to?

I've rarely installed the crapware "battery/power management" software that comes with a laptop - more often than not it provides little benefit over the stock features, other than providing some fancy UI and some extra software-based "profile" features for those who like to fiddle.

Edit: OK, I suppose some of those crapware programs probably replace the "missing" functionality from Windows XP - but from what I read, Windows 7 supposedly fills that gap again.

Edited 2010-02-09 03:43 UTC

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