[Bug 578506] Re: [Kernel] ACPI: EC: input buffer is not empty, aborting transaction

[Stéphane Travostino]

I've got the same laptop model as the OP, but running Archlinux. I
though I could shed some light on this issue.

There's an open kernel bug for this:
https://bugzilla.kernel.org/show_bug.cgi?id=14733

It affects all the kernel since 2.6.32, the only way to have a
functional system is applying the "Add delay before data write, take #2"
patch to the kernel source.

I'm writing this here since 2.6.34.1 is still affected by this bug and
there seems to be no activity on the kernel bugzilla, maybe Ubuntu can
push things a bit. It's quite a important problem as it does inhibit the
possibility to turn on the PC (when shutting down, remove AC and battery
and replug them in).

I've tested 2.6.32.6 and 2.6.34.1, the only way to have them running
correctly without 1s delays every 5 seconds and ACPI errors in the
kernel log is to apply the patch.

** Bug watch added: Linux Kernel Bug Tracker #14733
   http://bugzilla.kernel.org/show_bug.cgi?id=14733

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[Kernel] ACPI: EC: input buffer is not empty, aborting transaction
https://bugs.launchpad.net/bugs/578506
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