system crashes after cat /proc/acpi/battery/BAT0/state

system crashes after cat /proc/acpi/battery/BAT0/state

[Peter Muessig-Trapp]

Hi,

after

cat /proc/acpi/battery/BAT0/state

the system print out battery informations but after 5 seconds the system 
crashs
completely.
I can't find any error messages in /var/log/messages which helps me
understanding whats going on.

Anyone any idea, what's going on? Or what can I do, to get any helpfull
hints?

I am using kernel 2.6.0 Debian/sid.

cat /proc/acpi/info
version:                 20031002

cat /proc/acpi/battery/BAT0/info

present:                 yes
design capacity:         3876 mAh
last full capacity:      3876 mAh
battery technology:      rechargeable
design voltage:          14800 mV
design capacity warning: 388 mAh
design capacity low:     0 mAh
capacity granularity 1:  100 mAh
capacity granularity 2:  100 mAh
model number:            Primary
serial number:           56E0
battery type:            4E4F494C
OEM info:                 COMPAQ

Thanks for any help!

Peter Muessig-Trapp



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system crashes after cat /proc/acpi/battery/BAT0/state

[Peter Muessig-Trapp]

Hi,

excuse me, but I forgot to tell, that I'm using the ACPI DSDT initrd 
patch and a special DSDT-file for Compaq Evo N800v (while I have an
Compaq Evo N800c)

Hi,

after

cat /proc/acpi/battery/BAT0/state

the system print out battery informations but after 5 seconds the system
crashs
completely.
I can't find any error messages in /var/log/messages which helps me
understanding whats going on.

Anyone any idea, what's going on? Or what can I do, to get any helpfull
hints?

I am using kernel 2.6.0 Debian/sid.

cat /proc/acpi/info
version:                 20031002

cat /proc/acpi/battery/BAT0/info

present:                 yes
design capacity:         3876 mAh
last full capacity:      3876 mAh
battery technology:      rechargeable
design voltage:          14800 mV
design capacity warning: 388 mAh
design capacity low:     0 mAh
capacity granularity 1:  100 mAh
capacity granularity 2:  100 mAh
model number:            Primary
serial number:           56E0
battery type:            4E4F494C
OEM info:                 COMPAQ

Thanks for any help!

Peter Muessig-Trapp




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RE: system crashes after cat /proc/acpi/battery/BAT0/state

[Yu, Luming]

> the system print out battery informations but after 5 seconds 
> the system 
> crashs
> completely.
> I can't find any error messages in /var/log/messages which helps me
> understanding whats going on.
> 

Serial console ?

> Anyone any idea, what's going on? Or what can I do, to get 
> any helpfull
> hints?
> 
> I am using kernel 2.6.0 Debian/sid.
> 
> cat /proc/acpi/info
> version:                 20031002
> 

How about latest base kernel with latest ACPI ?


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Re: system crashes after cat /proc/acpi/battery/BAT0/state

[Stefan Seyfried]

On Tue, Feb 03, 2004 at 04:31:36PM +0800, Yu, Luming wrote:
> > excuse me, but I forgot to tell, that I'm using the ACPI DSDT initrd 
> > patch and a special DSDT-file for Compaq Evo N800v (while I have an
> > Compaq Evo N800c)
> 
> My question is whether your fixs to DSDT is correct or necessary? 
> We need to sort out real ACPI interpreter bug !

i would blame it on the wrong DSDT. I had similar problems (random crashes on
pressing some of the "Hotkeys" for example) on a ASUS L2400D with the DSDT
provided on acpi.sourceforge.net. I noticed that i had an older BIOS, so i
upgraded the BIOS to the latest version (the same as mentioned on the DSDT
page), but still got random crashes although the patched DSDT had only minimal
differences to the BIOS built-in dsdt. So now i use the built in, don't
have power management anymore but the machine runs stable again.

I have posted a comment on the dsdt page to save others from going through
the same trouble that i went throgh :-)

DSDT bugs are often subtle: first, everything seems to work, but then you get
random lockups or failures which you can't really explain. Bad.

-- 
Stefan Seyfried



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