Bug 427693 - Thinkpad X61s battery not detected
Summary: Thinkpad X61s battery not detected
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2008-01-06 19:37 UTC by Simon Karpen
Modified: 2008-03-07 15:11 UTC (History)
1 user (show)

Clone Of:
Last Closed: 2008-03-07 01:13:36 UTC

Attachments (Terms of Use)

Description Simon Karpen 2008-01-06 19:37:17 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9b3pre) Gecko/2008010314 Fedora/1.9-0.beta2.6.fc9 Minefield/3.0b3pre

Description of problem:
/proc/acpi/battery and its subdirectories and such do not exist. gnome-power-manager is unable to determine the battery runtime remaining, and is unable to show an accurate battery percentage when on battery. 

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. ls /proc/acpi
2. notice lack of batter
3. use gnome-power-manager applet and notice lack of discharge or accurate runtime

Actual Results:
/proc/acpi/battery does not exist, gnome-power-manager cannot show runtime or battery charge

Expected Results:
/proc/acpi/battery/BAT0/... with battery information, including charge state. gnome-power-manager showing useful information.

Additional info:
This is a regression relative to Fedora 8; kernel kernel- found the battery without a problem.

Comment 1 Simon Karpen 2008-01-06 19:42:58 UTC
There is some sort of communication happening, because the power remaining just
went from 96% to 79% with no intermediate steps. (after running on battery for
maybe an hour). Still not sure exactly what's going on.

Comment 2 Simon Karpen 2008-01-06 19:56:45 UTC
As yet another followup, it's back to saying 96% on a laptop that's been running
off battery for 90 minutes. (the X61s is efficient, but it's not *that* good). 

Comment 3 denis ivanov 2008-01-15 14:11:00 UTC
The same problem with current rawhide:


$ ls -l /proc/acpi/*bat*
ls: cannot access /proc/acpi/*bat*: No such file or directory

Maybe problem in kernel config (CONFIG_ACPI_PROCFS_POWER)?

$ cat config-2.6.24-0.150.rc7.git4.fc9 |grep ACPI|grep PROCFS

Comment 4 Simon Karpen 2008-01-17 11:55:38 UTC
With kernel-2.6.24-0.155.rc7.git6.fc9 I can now see the battery in /proc/acpi,
though gnome-power-manager shows two batteries (minor issue compared to no
charge monitoring)

/proc/acpi/battery/BAT0 only shows one battery

Comment 5 denis ivanov 2008-01-17 23:18:09 UTC
Yeah, the same problem. I have 2 batteries, but battery monitor shows 4...
Seems some procfs-ACPI vs. HAL problem.

But also seems this bug is unread by kernel maintainers? ;)

$ lshal |grep battery.charge_level.last_full
  battery.charge_level.last_full = 89640  (0x15e28)  (int)
  battery.charge_level.last_full = 37910  (0x9416)  (int)
  battery.charge_level.last_full = 37910  (0x9416)  (int)   # THIS IS DUPE
  battery.charge_level.last_full = 89640  (0x15e28)  (int)  # THIS IS DUPE

Comment 6 denis ivanov 2008-01-17 23:21:07 UTC
With kernel kernel-2.6.24-0.150.rc7.git4.fc9, /proc/acpi/battery/* was absent
but lshal listed 2 batteries (it was right for my computer)

Comment 7 denis ivanov 2008-01-24 09:44:48 UTC

same problem

Comment 8 denis ivanov 2008-01-30 22:37:56 UTC

still the same problem
four batteries found instead of real two

Comment 9 Simon Karpen 2008-03-06 14:52:30 UTC plus current rawhide finds exactly one battery correctly. 

Denis, are you seeing this too? (I'd like a second before marking this as resolved)

Comment 10 denis ivanov 2008-03-06 22:50:23 UTC
Batteries is ok with kernel-2.6.25-0.93.rc4.fc9.i686

Seems fixed. Please close the bug.

Comment 11 denis ivanov 2008-03-07 15:11:48 UTC
Seems the problem wasn't in kernel.
Now I back to older 2.6.24 kernel and all is ok.
Maybe somethings in HAL was fixed.

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