udev and acer batteries

udev and acer batteries

[Stéphane Guedon]

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Hello

I am writing to you concerning acer batteries.
My laptop batteries aren't detected until I plug in/out the ac_adaptator.
If I am at home, working on it, no problem. But if I am out of buildings, 
where I can't have power, my power status won't be detected by my desktop 
environnement.

In fact, sysfs detect it at boot and display it's state. But kde seems to look 
at udev event :
-when I switch off udev service, and plug in or out my adaptator, kde detect 
nothing !
- if I start again udev (just after stopping it and plug in/out adaptator), 
kde detect it !

When I look at events in boot, I can see that my battery is detect by udev :

Aug 11 18:45:24 luciole hald[5494]: 18:45:24.981 [I] coldplug.c:221: found 
(udevdb export) 
'/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD' -> 
'/dev/(null)'
Aug 11 18:45:25 luciole hald[5494]: 18:45:25.445 [I] coldplug.c:94: creating 
HotplugEvent for 
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD
Aug 11 18:45:25 luciole hald[5494]: 18:45:25.445 [I] coldplug.c:285: new event 
(dev node from udev) 
'/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD' ''
Aug 11 18:45:25 luciole hald[5494]: 18:45:25.445 [I] coldplug.c:319: new event 
(no dev node) 
'/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD'
Aug 11 18:45:25 luciole hald[5494]: 18:45:25.445 [D] hotplug.c:476: checking 
ADD event /sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD
Aug 11 18:45:25 luciole hald[5494]: 18:45:25.445 [D] hotplug.c:397: event 
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD: skip 
ourselves and all later events
Aug 11 18:45:25 luciole hald[5494]: 18:45:25.445 [I] hotplug.c:145: 
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD is a device 
(subsystem)
Aug 11 18:45:25 luciole hald[5494]: 18:45:25.445 [I] device.c:5002: add_dev: 
subsys=power_supply 
sysfs_path=/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD 
dev= parent_dev=0x00000000

In same time, I have found rules for toshiba laptop for example, but not for 
acer laptop.

As far as I understand, my battery is detected when power status change while 
udev is running.
So I would like to know if a rule for acer is being writed, if you need 
informations I can give you...

Tank you for you help.
Best regards
-- 
Stéphane Guedon
page web : http://www.22decembre.eu/
carte de visite : http://www.22decembre.eu/downloads/Stephane-Guedon.vcf
clé publique gpg : http://www.22decembre.eu/downloads/Stephane-Guedon.asc

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Re: udev and acer batteries

[Kay Sievers]

On Wed, Aug 11, 2010 at 19:08, Stéphane Guedon <stephane@22decembre.eu> wrote:
> I am writing to you concerning acer batteries.
> My laptop batteries aren't detected until I plug in/out the ac_adaptator.
> If I am at home, working on it, no problem. But if I am out of buildings,
> where I can't have power, my power status won't be detected by my desktop
> environnement.
>
> In fact, sysfs detect it at boot and display it's state. But kde seems to look
> at udev event :
> -when I switch off udev service, and plug in or out my adaptator, kde detect
> nothing !
> - if I start again udev (just after stopping it and plug in/out adaptator),
> kde detect it !

Udev does not do anything with batteries. It just receives events
about them from the kernel.

There are no rules or setup at udev's side which should change things,
it's all inside the kernel.

Kay
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Re: udev and acer batteries

[Martin Pitt]

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Hello Stéphane,

Stéphane Guedon [2010-08-11 19:08 +0200]:
> I am writing to you concerning acer batteries.
> My laptop batteries aren't detected until I plug in/out the ac_adaptator.
> If I am at home, working on it, no problem. But if I am out of buildings, 
> where I can't have power, my power status won't be detected by my desktop 
> environnement.

This is most probably a bug in hal. KDE still uses hal for hardware
detection/management, but since it's unmaintained, I wouldn't expect
this to be fixed anytime soon or at all.

Out of interest, can you install "upower" on your machine (if it's not
already present), and in this situation (i. e. boot when on battery
without AC), check the output of "upower --dump" whether it detects
your battery?

Thanks,

Martin


-- 
Martin Pitt                        | http://www.piware.de
Ubuntu Developer (www.ubuntu.com)  | Debian Developer  (www.debian.org)

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Re: udev and acer batteries

[Stéphane Guedon]

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Le Thursday 12 August 2010 07:25:56, Martin Pitt a écrit :
> Hello Stéphane,
> 
> Stéphane Guedon [2010-08-11 19:08 +0200]:
> > I am writing to you concerning acer batteries.
> > My laptop batteries aren't detected until I plug in/out the ac_adaptator.
> > If I am at home, working on it, no problem. But if I am out of buildings,
> > where I can't have power, my power status won't be detected by my desktop
> > environnement.
> 
> This is most probably a bug in hal. KDE still uses hal for hardware
> detection/management, but since it's unmaintained, I wouldn't expect
> this to be fixed anytime soon or at all.
> 
> Out of interest, can you install "upower" on your machine (if it's not
> already present), and in this situation (i. e. boot when on battery
> without AC), check the output of "upower --dump" whether it detects
> your battery?
> 
> Thanks,
> 
> Martin

with ac power on, but battery not yet recognize :

19:44:52 stephane@luciole:~ $ upower --dump
Device: /org/freedesktop/UPower/devices/line_power_ACAD
  native-path:          
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD
  power supply:         yes
  updated:              Thu Aug 12 19:45:09 2010 (0 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             yes

Daemon:
  daemon-version:  0.9.5
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      no
  on-low-battery:  no
  lid-is-closed:   no
  lid-is-present:   yes

after plugging out and in :

19:45:09 stephane@luciole:~ $ upower --dump
Device: /org/freedesktop/UPower/devices/line_power_ACAD
  native-path:          
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD
  power supply:         yes
  updated:              Thu Aug 12 19:47:07 2010 (6 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             yes

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path:          
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT1
  vendor:               SANYO
  model:                AS07B31
  serial:               30996
  power supply:         yes
  updated:              Thu Aug 12 19:47:12 2010 (1 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               fully-charged                                                                                                                                           
    energy:              48.3294 Wh                                                                                                                                              
    energy-empty:        0 Wh                                                                                                                                                    
    energy-full:         48.3294 Wh                                                                                                                                              
    energy-full-design:  48.84 Wh                                                                                                                                                
    energy-rate:         5.6499 W                                                                                                                                                
    voltage:             12.594 V                                                                                                                                                
    percentage:          100%                                                                                                                                                    
    capacity:            98.9545%
    technology:          lithium-ion
  History (charge):
    1281635230  100.000 fully-charged
    1281635226  99.426  fully-charged
    1281635222  99.495  fully-charged
    1281635222  0.000   unknown
  History (rate):
    1281635232  5.650   fully-charged
    1281635224  30.225  fully-charged
    1281635222  3.419   fully-charged
    1281635222  0.000   unknown

Daemon:
  daemon-version:  0.9.5
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      no
  on-low-battery:  no
  lid-is-closed:   no
  lid-is-present:   yes

reboot on battery :

19:53:49 stephane@luciole:~ $ upower --dump
Device: /org/freedesktop/UPower/devices/line_power_ACAD
  native-path:          
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD
  power supply:         yes
  updated:              Thu Aug 12 19:53:52 2010 (0 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             no

Daemon:
  daemon-version:  0.9.5
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      no
  on-low-battery:  no
  lid-is-closed:   no
  lid-is-present:   yes

plugging in the ac adatator

19:53:52 stephane@luciole:~ $ upower --dump
Device: /org/freedesktop/UPower/devices/line_power_ACAD
  native-path:          
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD
  power supply:         yes
  updated:              Thu Aug 12 19:54:02 2010 (2 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             yes

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path:          
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT1
  vendor:               SANYO
  model:                AS07B31
  serial:               30996
  power supply:         yes
  updated:              Thu Aug 12 19:54:04 2010 (0 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               charging                                                                                                                                                
    energy:              46.62 Wh                                                                                                                                                
    energy-empty:        0 Wh                                                                                                                                                    
    energy-full:         48.3294 Wh                                                                                                                                              
    energy-full-design:  48.84 Wh                                                                                                                                                
    energy-rate:         37.2738 W                                                                                                                                               
    voltage:             11.929 V                                                                                                                                                
    time to full:        2.8 minutes                                                                                                                                             
    percentage:          96.463%
    capacity:            98.9545%
    technology:          lithium-ion
  History (charge):
    1281635643  96.463  charging
    1281635643  0.000   unknown
  History (rate):
    1281635643  37.274  charging
    1281635643  0.000   unknown

Daemon:
  daemon-version:  0.9.5
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      no
  on-low-battery:  no
  lid-is-closed:   no
  lid-is-present:   yes

Hope this will help you, and me !
Thanks

-- 
Stéphane Guedon
page web : http://www.22decembre.eu/
carte de visite : http://www.22decembre.eu/downloads/Stephane-Guedon.vcf
clé publique gpg : http://www.22decembre.eu/downloads/Stephane-Guedon.asc

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Re: udev and acer batteries

[Martin Pitt]

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Bonjour Stéphane,

Stéphane Guedon [2010-08-12 19:57 +0200]:
> with ac power on, but battery not yet recognize :
> 
> 19:44:52 stephane@luciole:~ $ upower --dump
> Device: /org/freedesktop/UPower/devices/line_power_ACAD
> [...]

OK, so this has the same problem as hal, not very surprising, though.

This could be a BIOS bug, or your battery wasn't properly detected
during coldplug. Does this command change anything?

  sudo udevadm trigger --verbose --subsystem-match=power_supply

It should print two device paths, one for the AC and one for the
battery. If the second one is missing, then the trigger didn't help,
and it could be a kernel or BIOS bug.

Thanks,

Martin
-- 
Martin Pitt                        | http://www.piware.de
Ubuntu Developer (www.ubuntu.com)  | Debian Developer  (www.debian.org)

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Re: udev and acer batteries

[Stéphane Guedon]

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Le Thursday 12 August 2010 20:25:03, Martin Pitt a écrit :
> Bonjour Stéphane,
> 
> Stéphane Guedon [2010-08-12 19:57 +0200]:
> > with ac power on, but battery not yet recognize :
> > 
> > 19:44:52 stephane@luciole:~ $ upower --dump
> > Device: /org/freedesktop/UPower/devices/line_power_ACAD
> > [...]
> 
> OK, so this has the same problem as hal, not very surprising, though.
> 
> This could be a BIOS bug, or your battery wasn't properly detected
> during coldplug. Does this command change anything?
> 
>   sudo udevadm trigger --verbose --subsystem-match=power_supply
> 
> It should print two device paths, one for the AC and one for the
> battery. If the second one is missing, then the trigger didn't help,
> and it could be a kernel or BIOS bug.
> 
> Thanks,
> 
> Martin

I have nothing in my bios concerning batteries !

just after boot :

21:51:13 root@luciole:~ # udevadm trigger --verbose --subsystem-
match=power_supply
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD

plugging out and in ac adaptator :

21:51:16 root@luciole:~ # udevadm trigger --verbose --subsystem-
match=power_supply
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT1

So, on your advice, do I have to make a bug report ?
I use currently gentoo tuxonice kernel, but it seems to be a standard kernel 
with only hibernation patch.

On an other thing, I find strange that I can't find your gpg signature in the 
ubuntu keyserver, whereas you're a ubuntu "addicted" dev ...

Best regards
-- 
Stéphane Guedon
page web : http://www.22decembre.eu/
carte de visite : http://www.22decembre.eu/downloads/Stephane-Guedon.vcf
clé publique gpg : http://www.22decembre.eu/downloads/Stephane-Guedon.asc

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Re: udev and acer batteries

[Curtis Gedak]

Hi Stéphane,

Even if your BIOS does not show a setting for batteries, it might still 
contain controls for your laptop batteries.

I have an Acer Aspire One AOA-110-1812 and had to upgrade my BIOS due to 
a battery charging problem that was fixed by a BIOS upgrade.

This is the note regarding the problem for my Acer netbook:
http://macles.blogspot.com/2008/12/acer-aspire-one-bios-3309.html

Regards,
Curtis Gedak

Stéphane Guedon wrote:
> I have nothing in my bios concerning batteries !
>
>   

Re: udev and acer batteries

[Martin Pitt]

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Hello Stéphane,

Stéphane Guedon [2010-08-12 21:59 +0200]:
> I have nothing in my bios concerning batteries !

Not in the setup screen, but the BIOS is still responsible for the
ACPI implementation. Unfortunately these often come with pretty
serious bugs :-/

> 
> 21:51:13 root@luciole:~ # udevadm trigger --verbose --subsystem-
> match=power_supply
> /sys/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0003:00/power_supply/ACAD

OK, so it's not a bug with udev at all then.

> So, on your advice, do I have to make a bug report ?
> I use currently gentoo tuxonice kernel, but it seems to be a standard kernel 
> with only hibernation patch.

I don't know enough about kernel ACPI initialization to know whether
it could be a kernel bug, or is definitively a bug in the BIOS' ACPI
implementation/tables. If you make a kernel bug report, please test
with the latest upstream kernel first, and include the output of
"dmesg", which includes quite a lot of ACPI information.

But perhaps try the BIOS update first that Curtis mentioned?

> On an other thing, I find strange that I can't find your gpg signature in the 
> ubuntu keyserver, whereas you're a ubuntu "addicted" dev ...

Both my old and my new key are there..

$ gpg --keyserver keyserver.ubuntu.com --search-key martin.pitt@ubuntu.com

Martin

-- 
Martin Pitt                        | http://www.piware.de
Ubuntu Developer (www.ubuntu.com)  | Debian Developer  (www.debian.org)

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RE: udev and acer batteries

[Jordan_Hargrave]

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I've been looking into ACPI on laptops and have noticed the battery info is usually cached by the BIOS. The battery status/presence won't get updated unless you plug/unplug the power cord if the battery is fully charged.

--jordan hargrave
Dell Enterprise Linux Engineering


-----Original Message-----
From: linux-hotplug-owner@vger.kernel.org [mailto:linux-hotplug-owner@vger.kernel.org] On Behalf Of Curtis Gedak
Sent: Thursday, August 12, 2010 4:24 PM
To: Stéphane Guedon
Cc: martin.pitt@ubuntu.com; linux-hotplug@vger.kernel.org
Subject: Re: udev and acer batteries

Hi Stéphane,

Even if your BIOS does not show a setting for batteries, it might still 
contain controls for your laptop batteries.

I have an Acer Aspire One AOA-110-1812 and had to upgrade my BIOS due to 
a battery charging problem that was fixed by a BIOS upgrade.

This is the note regarding the problem for my Acer netbook:
http://macles.blogspot.com/2008/12/acer-aspire-one-bios-3309.html

Regards,
Curtis Gedak

Stéphane Guedon wrote:
> I have nothing in my bios concerning batteries !
>
>   
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Re: udev and acer batteries

[Stéphane Guedon]

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Le Friday 13 August 2010 22:40:14, vous avez écrit :
> I've been looking into ACPI on laptops and have noticed the battery info is
> usually cached by the BIOS. The battery status/presence won't get updated
> unless you plug/unplug the power cord if the battery is fully charged.
> 
> --jordan hargrave
> Dell Enterprise Linux Engineering
> 
> 
> -----Original Message-----
> From: linux-hotplug-owner@vger.kernel.org
> [mailto:linux-hotplug-owner@vger.kernel.org] On Behalf Of Curtis Gedak
> Sent: Thursday, August 12, 2010 4:24 PM
> To: Stéphane Guedon
> Cc: martin.pitt@ubuntu.com; linux-hotplug@vger.kernel.org
> Subject: Re: udev and acer batteries
> 
> Hi Stéphane,
> 
> Even if your BIOS does not show a setting for batteries, it might still
> contain controls for your laptop batteries.
> 
> I have an Acer Aspire One AOA-110-1812 and had to upgrade my BIOS due to
> a battery charging problem that was fixed by a BIOS upgrade.
> 
> This is the note regarding the problem for my Acer netbook:
> http://macles.blogspot.com/2008/12/acer-aspire-one-bios-3309.html
> 
> Regards,
> Curtis Gedak
> 
> Stéphane Guedon wrote:
> > I have nothing in my bios concerning batteries !
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

So, do you think there is a way to retrieve this information ?
A module to load, a specific option to the kernel, a script to run ?

Regards

-- 
Stéphane Guedon
page web : http://www.22decembre.eu/
carte de visite : http://www.22decembre.eu/downloads/Stephane-Guedon.vcf
clé publique gpg : http://www.22decembre.eu/downloads/Stephane-Guedon.asc

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Re: udev and acer batteries

[Stéphane Guedon]

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Le Friday 13 August 2010 22:40:14, vous avez écrit :
> I've been looking into ACPI on laptops and have noticed the battery info is
> usually cached by the BIOS. The battery status/presence won't get updated
> unless you plug/unplug the power cord if the battery is fully charged.
> 
> --jordan hargrave
> Dell Enterprise Linux Engineering
> 
> 
> -----Original Message-----
> From: linux-hotplug-owner@vger.kernel.org
> [mailto:linux-hotplug-owner@vger.kernel.org] On Behalf Of Curtis Gedak
> Sent: Thursday, August 12, 2010 4:24 PM
> To: Stéphane Guedon
> Cc: martin.pitt@ubuntu.com; linux-hotplug@vger.kernel.org
> Subject: Re: udev and acer batteries
> 
> Hi Stéphane,
> 
> Even if your BIOS does not show a setting for batteries, it might still
> contain controls for your laptop batteries.
> 
> I have an Acer Aspire One AOA-110-1812 and had to upgrade my BIOS due to
> a battery charging problem that was fixed by a BIOS upgrade.
> 
> This is the note regarding the problem for my Acer netbook:
> http://macles.blogspot.com/2008/12/acer-aspire-one-bios-3309.html
> 
> Regards,
> Curtis Gedak
> 
> Stéphane Guedon wrote:
> > I have nothing in my bios concerning batteries !
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

So, do you think there is a way to retrieve this information ?
A module to load, a specific option to the kernel, a script to run ?

Sorry, I forgot to say my laptop model : acer aspire 7730z, this avoid (I 
think ? don't know !) your remark from your blog !

Regards

-- 
Stéphane Guedon
page web : http://www.22decembre.eu/
carte de visite : http://www.22decembre.eu/downloads/Stephane-Guedon.vcf
clé publique gpg : http://www.22decembre.eu/downloads/Stephane-Guedon.asc

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Re: udev and acer batteries

[Curtis Gedak]

Hi Stéphane,

You can check for BIOS updates for your Acer laptop on the 
manufacturer's web site.

In Canada their web site is:
http://www.acer.ca

The BIOS updates can be found under the "Service & Support" section 
"Driver Download" subsection.

Regards,
Curtis Gedak

Stéphane Guedon wrote:
> So, do you think there is a way to retrieve this information ?
> A module to load, a specific option to the kernel, a script to run ?
>
> Sorry, I forgot to say my laptop model : acer aspire 7730z, this avoid (I 
> think ? don't know !) your remark from your blog !
>