From: Corrado Zoccolo <czoccolo@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: "ACPI: EC: missing confirmations, switch off interrupt mode" wastes time on startup
Date: Thu, 26 Mar 2009 16:47:20 +0100 [thread overview]
Message-ID: <4e5e476b0903260847m1de3e976ne20279df359176cf@mail.gmail.com> (raw)
Hi,
I found that on my netbook (acer aspire one 110), kernel boot time
(kernel 2.6.29) is severely affected by the EC boot procedure, since
it is first fooled by a spurious interrupt in thinking that interrupts
work, and then gets a timeout waiting for an interrupt that never
arrives:
[ 0.351161] calling acpi_init+0x0/0x236 @ 1
[ 0.361052] ACPI: EC: Look up EC in DSDT
[ 0.367754] ACPI: BIOS _OSI(Linux) query ignored
[ 0.368984] ACPI: EC: non-query interrupt received, switching to
interrupt mode
[ 0.860013] ACPI: EC: missing confirmations, switch off interrupt mode.
[ 0.866062] ACPI: Interpreter enabled
There is a bug report for this issue
http://bugzilla.kernel.org/show_bug.cgi?id=12001 , marked as fixed on
an old kernel, but I'm still getting it with 2.6.29 (maybe my
controller is flaky?), so I'm looking for a workaround: is there a way
to force the ACPI using polling?
--
__________________________________________________________________________
dott. Corrado Zoccolo mailto:czoccolo@gmail.com
PhD - Department of Computer Science - University of Pisa, Italy
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next reply other threads:[~2009-03-26 15:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-26 15:47 Corrado Zoccolo [this message]
2009-03-26 16:58 ` Alan Jenkins
2009-03-26 21:54 ` Corrado Zoccolo
2009-03-27 10:10 ` Alan Jenkins
2009-04-29 0:36 ` Ryan Hope
2009-04-29 7:41 ` Corrado Zoccolo
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