Messages in this thread Patch in this message | | | From | Olaf Dietsche <> | Subject | Re: [2.6.22-rc3][ACPI?] Resume from s2r doesn't work. | Date | Sun, 03 Jun 2007 23:20:41 +0200 |
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"Rafael J. Wysocki" <rjw@sisk.pl> writes:
> Second, you can use PM_TRACE (Documentation/power/s2ram.txt) to find the > place where it really fails.
First I augmented my minimal config kernel with some TRACE_RESUME()s:
--- a/kernel/power/main.c 2007-05-27 23:48:05.000000000 +0200 +++ b/kernel/power/main.c 2007-06-03 22:28:46.000000000 +0200 @@ -223,6 +223,7 @@ pr_debug("PM: Finishing wakeup.\n"); suspend_finish(state); Unlock: + TRACE_RESUME(error); mutex_unlock(&pm_mutex); return error; } @@ -303,6 +304,7 @@ error = enter_state(state); else error = -EINVAL; + TRACE_RESUME(error); return error ? error : n; } With this test script: #! /bin/sh
sync echo 1 >/sys/power/pm_trace echo mem >/sys/power/state shutdown -rn now
I got alternating hash matches drivers/base/power/resume.c:58 and hash matches kernel/power/main.c:307
> First, you can check if the patch > > http://www.sisk.pl/kernel/hibernation_and_suspend/2.6.22-rc3/patches/20-ACPI-preserve-the-ebx-value-in-acpi_copy_wakeup_routine.patch
Then I applied this patch, but it doesn't change anything.
But either way the script never reaches "shutdown -rn now". So, it seems, that my laptop does a full resume every other reboot, but it never returns to userspace.
> Also, please read Documentation/power/basic-pm-debugging.txt .
Regards, Olaf. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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