Re: linux-next on thinkpad x60: full battery is indicated as battery error in mate

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On Tue, Mar 13, 2018 at 12:18:47AM +0100, Pavel Machek wrote:
> Hi!
> 
> > >> > >> Fully charged
> > >> > >> battery shows as empty battery with red "x" in Mate desktop. After
> > >> > >> reboot to recent mainline problem goes away. Tooltip says "battery
> > >> > >> waiting to charge".
> > >> > >>
> > >>
> > >> For the MATE bug see:
> > >> https://github.com/mate-desktop/mate-power-manager/pull/251
> > >>
> > >> The problem is in the new composite battery system in UPower, it
> > >> "merges" two external batteries into a single one for reporting. That
> > >> battery does not understand "Not Charging" inside the MATE Power
> > >> Manager. The above patch fixes that in MATE.
> > >
> > > Ok, so problem is 91eea70e5e5ce12eb1c7cd922e561fab43e201bd.
> > >
> > > And now, I see that MATE should be improved.
> > >
> > > But what I also see is that kernel is changing its interface in a way
> > > that (while making sense) breaks existing application. And we don't
> > > break existing applications.
> > >
> > > [Now... maybe if the fix for the application is available for long
> > > long time and noone is really looking and everyone already has new
> > > application version, maybe ... But pull request for MATE is 9 days
> > > old, and not even merged. So there is no way this is suitable for
> > > 4.17.]
> > 
> > Right.
> > 
> > This basically means that we will have to defer the battery changes
> > until user space is ready and not just upstream, but also in distro
> > packages.
> 
> Yes please.
> 
> Note that only 91eea70e5e5ce12eb1c7cd922e561fab43e201bd should break
> anything, the others should be safe AFAICT?
> 
> 								Pavel
> 

Actually there is a bug in UPower itself, and that reflects the status
icon being broken in almost all desktop environments. I will work on
fixing UPower in the following days. Disregard my previous comment.

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


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