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Date: Sat, 09 Jun 2007 21:54:33 +0200 From: Thomas Gleixner <tglx@...utronix.de> To: LKML <linux-kernel@...r.kernel.org> Cc: Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...e.hu>, Len Brown <lenb@...nel.org>, "Rafael J. Wysocki" <rjw@...k.pl> Subject: Jinxed VAIO wreckage - current state of affairs Andrew's jinxed VAIO breaks with the high resolution timer updates in a very strange way. Andrew identified the following patch as the culprit: http://www.tglx.de/projects/hrtimers/2.6.22-rc4/broken-out/clockevents-fix-resume-logic.patch This makes no sense at all. The patch just moves the timer restart to a different (later) place in the code and does exactly the same thing as the current code does. On resume the VAIO is stuck in the following place: <Andrews debug session> We finish swsusp_save() and a few other functions then we go hibernate ->platform_finish ->acpi_hibernation_finish ->acpi_leave_sleep_state ->acpi_evaluate_object and there it dies, in this call: status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL); I wonder how your patch caused that? <debugs further> OK, it gets to the last statement in acpi_evaluate_object(): return_ACPI_STATUS(status); but doesn't hit the printk on return to the caller, acpi_leave_sleep_state(). </Andrews debug session> Some data points: This happens only, when the local apic timer is used. With PIT the resume works fine. I back ported the full high res stuff to 2.6.20. On 2.6.20 the VAIO survives that patch. Can the suspend/resume and ACPI wizards please give some hint how to track this 100% reproducible wreckage down. Thanks, tglx - 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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