On Wednesday 18 November 2009, Ferenc Wagner wrote: > Ferenc Wagner <wferi@xxxxxxx> writes: > > > Since I've instrumented s2disk and the hibernation path, no freeze > > happened during hibernating the machine. > > Not until I removed the delays from hibernation_platform_enter(), which > were put there previously to get step-by-step feedback. Removing them > again resulted in a freeze in short course, maybe just two hibernations > later. The instrumentation shows it stuck in dpm_suspend_start(PMSG_HIBERNATE). > Does it mean that some device driver is at fault? A driver or one of the platform hooks. > I'll check if it always fails at the same point (although tracing into > dpm_suspend_start isn't pure fun because of the multitude of devices it > loops over). Is there any way to get printk output from that phase? Compile with CONFIG_PM_VERBOSE (it does mean exactly that). > Side question: If I run s2disk from the init=/bin/bash prompt, the > instrumentation in acpi_enter_sleep_state_prep in drivers/acpi/acpica/hwsleep.c > fires before the "Snapshotting system" phase, but it does not fire if I > hibernate from the full running desktop. (That instrumentation was put > there to investigate the KMS-triggered STR freeze.) What could explain > this? It looks like it uses the "shutdown" method when run with init=/bin/bash, but I don't know why exactly. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
