Bug 182738

Summary:	[2.6.21 regression] broken ACPI battery support on IBM ThinkPad T23
Product:	Gentoo Linux	Reporter:	Slava Gorbunov <slava>
Component:	[OLD] Core system	Assignee:	Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>
Status:	RESOLVED NEEDINFO
Severity:	normal
Priority:	High
Version:	2006.1
Hardware:	x86
OS:	Linux
URL:	http://bugzilla.kernel.org/show_bug.cgi?id=8651
Whiteboard:	linux-2.6.21-regression
Package list:		Runtime testing required:	---

Description Slava Gorbunov 2007-06-20 22:11:50 UTC

The 2.6.21 linux kernel branch has broken support of ACPI battery - on some notebooks (for example, IBM ThinkPad T23) it doesn't detect batteries at all (/proc/acpi/battery is empty). linux-2.6.20 doesn't have this bug.


Reproducible: Always

Comment 1 Mike Pagano gentoo-dev

2007-06-22 15:48:21 UTC

FYI. Related upstream bug:

http://bugzilla.kernel.org/show_bug.cgi?id=8651

Comment 2 Daniel Drake (RETIRED) gentoo-dev

2007-06-29 02:39:39 UTC

Can you reproduce this on the latest development kernel, currently v2.6.22-rc6?

Comment 3 Daniel Drake (RETIRED) gentoo-dev

2007-07-18 19:26:11 UTC

According to the upstream bug, 2.6.22 fixes this. If it doesn't, or you'd be interested in helping us backport the fix to 2.6.21, please reopen this bug.