Device enumeration at boot doesn't detect acpi battery.

Device enumeration at boot doesn't detect acpi battery.

[Brian Hutsell]

Hello,

Apologies in 
advance if I sent this to the wrong place.  I'm not sure where the 
kernel's boot-time device enumeration code lives.  If this is the wrong 
forum, could someone please tell me the email address I should forward 
it to?  Thanks.

I have a laptop running Linux 2.6.32-22-generic 
#33-Ubuntu SMP x86_64.  My laptop is an ACER Aspire 6930.  When I boot, 
the battery isn't enumerated into "sysfs" like gnome-power-manager 
expects it to.

After boot, the following command finds nothing:
% find /sys -name "BAT1" -print

If I inspect the contents of one 
of the files in the /proc/acpi/battery/BAT1 directory, they'll appear:
%  cat /proc/acpi/battery/BAT1/state 
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            0 mA
remaining 
capacity:      3619 mAh
present voltage:         12131 mV

% 
find /sys -name "BAT1" -print
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT1
/sys/class/power_supply/BAT1

This is repeatable on every boot.  Once I "cat 
/proc/acpi/battery/BAT1/state", gnome-power-manager recognizes my 
battery (via upowerd) and all is well.

This is the 
non-"gnome-power-manager" part of https://bugzilla.gnome.org/show_bug.cgi?id=617529


Can someone point me at the right forum, the code that needs to be 
modified, or better yet, fix the problem?  I've never touched with the 
kernel code before.

All help is appreciated.
--Brian


      

Re: Device enumeration at boot doesn't detect acpi battery.

[Zhang Rui]

Hi, Brian,

please attach the acpidump output of your laptop.
please attach the dmesg output after boot.
It would be great if you can file a new bug report at
https://bugzilla.kernel.org/enter_bug.cgi?product=ACPI
and attach these info there.

thanks,
rui


On Thu, 2010-05-20 at 18:50 +0800, Brian Hutsell wrote:
> Hello,
> 
> Apologies in 
> advance if I sent this to the wrong place.  I'm not sure where the 
> kernel's boot-time device enumeration code lives.  If this is the wrong 
> forum, could someone please tell me the email address I should forward 
> it to?  Thanks.
> 
> I have a laptop running Linux 2.6.32-22-generic 
> #33-Ubuntu SMP x86_64.  My laptop is an ACER Aspire 6930.  When I boot, 
> the battery isn't enumerated into "sysfs" like gnome-power-manager 
> expects it to.
> 
> After boot, the following command finds nothing:
> % find /sys -name "BAT1" -print
> 
> If I inspect the contents of one 
> of the files in the /proc/acpi/battery/BAT1 directory, they'll appear:
> %  cat /proc/acpi/battery/BAT1/state 
> present:                 yes
> capacity state:          ok
> charging state:          charged
> present rate:            0 mA
> remaining 
> capacity:      3619 mAh
> present voltage:         12131 mV
> 
> % 
> find /sys -name "BAT1" -print
> /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT1
> /sys/class/power_supply/BAT1
> 
> This is repeatable on every boot.  Once I "cat 
> /proc/acpi/battery/BAT1/state", gnome-power-manager recognizes my 
> battery (via upowerd) and all is well.
> 
> This is the 
> non-"gnome-power-manager" part of https://bugzilla.gnome.org/show_bug.cgi?id=617529
> 
> 
> Can someone point me at the right forum, the code that needs to be 
> modified, or better yet, fix the problem?  I've never touched with the 
> kernel code before.
> 
> All help is appreciated.
> --Brian
> 
> 
>       
> 
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