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v3.18-rc1: n900 battery discharged down to 2.97V

DISCUSSION Pavel Machek 2 participants 3 messages Nov 24, 2014

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Pavel Machek

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Hi!

I left the machine on usb-networking for extended period of time. Unfortunately, Xfce screensaver kept screen busy, and kernel failed to kill the machine.

At the end, hardware protections worked (I guess), but result is battery discharged down to 2.97V.

Best regards,
Pavel

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(english) http://www.livejournal.com/~pavelmachek
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Quoted 11 lines · On Monday 24 November 2014 19:31:30 Pavel Machek wrote:

Hi!

I left the machine on usb-networking for extended period of time. Unfortunately, Xfce screensaver kept screen busy, and kernel failed to kill the machine.

At the end, hardware protections worked (I guess), but result is battery discharged down to 2.97V.

Best regards,
Pavel

So you need some program which will monitor battery status and when battery status is empty it should turn of device.

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Pali Roh?r
pali.rohar at gmail.com
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Quoted 7 lines · Pali Roh?r
Quoted 6 lines · On Monday 24 November 2014 19:31:30 Pavel Machek wrote:

Hi!

I left the machine on usb-networking for extended period of time. Unfortunately, Xfce screensaver kept screen busy, and kernel failed to kill the machine.

Quoted 5 lines
Quoted 2 lines

At the end, hardware protections worked (I guess), but result is battery discharged down to 2.97V.

So you need some program which will monitor battery status and when battery status is empty it should turn of device.

And that program should be part of the kernel, because kernel should protect hardware from damage. (And it should be perfectly ok to boot into init=/bin/bash...)

Anyway, this was just friendly warning, so that you don't unneccessarily damage your battery...
Pavel

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(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html