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

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

[Pavel Machek]

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

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

[Pali Rohár]

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.

-- 
Pali Roh?r
pali.rohar at gmail.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20141124/1f5f1547/attachment-0001.sig>

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

[Pavel Machek]

On Mon 2014-11-24 19:58:34, Pali Roh?r wrote:
> 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.
> 
> 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
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html