Originally Posted by VaiFanatic
The laptop is about two years old, purchased with 3 others of the same type that have no BIOS or CMOS battery issues.
I've taken the laptop battery out and left it plugged it to the wall outlet and it'll do it, and I've left the battery in and disconnected it from the wall and it'll do it.
I think it's just trying to come alive
Like I said, I have been using this laptop with 7 Pro for months now with no phantom behavior.
It's not big deal, it was just something I had to share!
Dodgy ACPI firmware could still show itself differently in different OSs. The problem is -IIRC- Microsoft co-developed ACPI with a couple of OEMs and they never disclosed the full spec. So Linux has to reverse engineer the interface and that means if the firmware has a bug / doesn't play nice, it's more likely to show itself in Linux than in Windows.
For this to show itself though, Linux (the kernel) would have to still be sat in memory when "powered off"; and as RAM is volatile, this means Linux must have powered down all the interfaces (eg parked the HDD, et al) but not fully powered down the machine. This would give the illusion that the machine was off and phantom starting.
You did say you'd taken the battery out and left it with the mains power in, did you have a period (say 10 seconds) where both the battery and
the mains power were disconnected? If so, then basically you've just wasted a few seconds of your life reading all of the above
Oh, and it's entirely possible that you can have a dodgy CMOS battery on one laptop and not the others. Or have a dodgy firmware version on one laptop and not the others (if a new firmware was released around the same time the laptops were manufactured and/or they came from different batches - despite being bought at the same time)Edited by Plan9 - 8/18/12 at 1:56am