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Date: Thu, 26 Mar 2009 16:47:20 +0100 From: Corrado Zoccolo <czoccolo@...il.com> To: linux-kernel@...r.kernel.org Subject: "ACPI: EC: missing confirmations, switch off interrupt mode" wastes time on startup 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@...il.com PhD - Department of Computer Science - University of Pisa, Italy -------------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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