On Mon, 21 Dec 2009, Florian Zumbiehl wrote:
> I have here a T20 with a T22 BIOS and a 2.6.32 kernel. After boot,
You are using the latest version of the BIOS and embedded controller ("slave
controller") for the T22?
> the lid switch, hotkeys, batteries, ac, and maybe more. However,
> when I disconnect and reconnect ac power a few times in rapid
> succession, that leads to all of these events not being reported
> anymore. Suspend to RAM and to disk both don't fix it, only a
> reboot does.
Please report this as a bug against the ACPI EC (embedded controller)
component, through http://bugzilla.kernel.org, or send a bug report to
linux-acpi@xxxxxxxxxxxxxxxx
> Any hints as to how to debug or possibly even fix this would be
> appreciated.
Well, first I'd make sure the firmware is the most up-to-date version
available. Then I'd suggest opening a bug report in bugzilla.kernel.org, as
that's the preferred way to report and track bugs in the ACPI subsystem.
It looks like some problem either in the EC handling in Linux, or a bug in
the EC firmware itself, which maybe Linux could work around.
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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