Most recent kernel where this bug did not occur: 2.6.23
Hardware Environment:MSI ex600,pr200 and GX700 laptops
The battery is not found because of:
[ 25.866703] ACPI Error (evregion-0316): No handler for Region [EC__] (f7c108e8) [EmbeddedControl] 
[ 25.866708] ACPI Error (exfldio-0289): Region EmbeddedControl(3) has no handler 
[ 25.866713] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.SBRG.EC__.BAT1._STA] (Node f7c13210), AE_NOT_EXIST
Steps to reproduce: The problem just appears by using the mentioned hardware.
Created attachment 14297 [details]
Created attachment 14298 [details]
exact kernel version
Created attachment 14299 [details]
Created attachment 14300 [details]
Please attach the dmesg for the working 2.6.23 kernel.
Created attachment 14301 [details]
working 2.6.23 dmesg
Please check if the patch from 9627 helps.
*** This bug has been marked as a duplicate of bug 9627 ***
Yup, thanks, the patch from http://bugzilla.kernel.org/show_bug.cgi?id=9627 does the job.