http://bugzilla.kernel.org/show_bug.cgi?id=11884
Summary: No battery status information on HP EliteBook 2730p
Product: ACPI
Version: 2.5
KernelVersion: 2.6.27.4
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Battery
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
Latest working kernel version: N/A
Earliest failing kernel version: 2.6.27.4
Distribution: Debian Lenny (testing)
Hardware Environment:
HP 2730p tablet PC laptop, Core2 Duo CPU L9400 @1.86GHz, 4GB RAM
Software Environment:
Fresh install of Debian Lenny/testing with vanilla 2.6.27.4 kernel
from www.kernel.org The only change made is the intel_agp patch from
http://intellinuxgraphics.org/download.html (the system hangs up
otherwise).
Problem Description:
ACPI doesn't provide battery status. In fact, the directory
/proc/acpi/battery is missing completely. dmesg shows multiple
ACPI errors during the boot time of the type
ACPI Error (psparse-0530): Method parse/execution failed
[\_SB_.BAT0._BIF] (Node f7446ba8), AE_TIME
All kernels prior to 2.6.27 that I've tried boot with apci=off option
only (with only one core recognized), so I don't know whether this
problem existed in earlier versions. I found several bug reports about
similar problems on other types of laptops, but they all were supposed
to be fixed in 2.6.27 by now. By the way, temperature sensors at several
zones and frequency scaling work.
Steps to reproduce:
Boot the laptop. I'm going to attach the outputs of dmesg, lcpci, and
acpidump to this bug report for more details. I'm not sure which other
information might be useful.
Thank you,
--- Alex.
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