On Thursday, 13 of December 2007, Andrew Morton wrote: > On Fri, 21 Sep 2007 15:37:40 -0400 (EDT) Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > > This patch (as994) reorganizes the way suspend and resume > > notifications are sent to drivers. The major changes are that now the > > PM core acquires every device semaphore before calling the methods, > > and calls to device_add() during suspends will fail. > > Causes my t61p to deadlock during suspend-to-RAM. Really late - the little > moon symbol has started to flash but the LCD is still powered and the > cursor still blinks. Only a poweroff restores control. Most probably, one of the drivers or a CPU hotplug notifier unregisters a device during suspend (wrong). Please boot with no_console_suspend and check if the box survives (with this patch applied): # echo 8 > /proc/sys/kernel/printk # echo processors > /sys/power/pm_test # echo mem > /sys/power/state If it doesn't, you can try # echo platform > /sys/power/pm_test # echo mem > /sys/power/state and # echo devices > /sys/power/pm_test # echo mem > /sys/power/state _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
