On Thursday, 21 of February 2008, Soeren Sonnenburg wrote: > On Thu, 2008-02-21 at 01:31 +0100, Rafael J. Wysocki wrote: > > On Wednesday, 20 of February 2008, Soeren Sonnenburg wrote: > > > On Wed, 2008-02-20 at 00:50 +0100, Rafael J. Wysocki wrote: > > > > On Tuesday, 19 of February 2008, Soeren Sonnenburg wrote: > > > > > On Tue, 2008-02-19 at 22:06 +0100, Rafael J. Wysocki wrote: > > > > > > On Tuesday, 19 of February 2008, Soeren Sonnenburg wrote: > > > > > > > Hi, > > > > > > > > > > > > Hi, > > > > > > > > > > > > > since 2.6.25-rc1 (first version I tried) and still in rc2 > > (and git), I > > > > > > > see a hang on s2ram already when trying to suspend. > > > > > > > > > > > > Does it work with 2.6.24? > > > > > > > > > > yes. > > > > > > > > Please take the current mainline (there are a couple of nasty bugs > > fixed in > > > > it), configure it with CONFIG_PM_DEBUG set, boot it with > > "no_console_suspend", > > > > run > > > > > > > > # echo 8 > /proc/sys/kernel/printk > > > > # echo devices > /sys/power/pm_test > > > > # echo mem > /sys/power/state > > > > > > > > If it hangs, it should leave a stack trace before and I need that trace to see > > > > what's going on. If it doesn't hang, I'll tell you what to do next. > > > > > > I tried with 2.6.24.2 with CONFIG_PM_DEBUG set, following your steps and > > > yes it works flawlessly (though the display did not come back I could > > > suspend/resume multiple times without problems, and finally s2ram -f -p > > > brought the display back). > > > > Hm, there's no /sys/power/pm_test in 2.6.24.2 (and the "current mainline" > > means the latest -git kernel possible or the current top of the Linus' tree), > > so in fact you tested 2.6.24 again, that is known to work ... > > Great :( > > Anyway testing linus' git-current, I see that it does not hang. However > after the echo mem >/sys/power/state I am seeing: > [...] > PM: Finishing wakeup. > Restarting tasks ... done. > ata1: port is slow to respond, please be patient (Status 0x80) > ata1: device not ready (errno=-16), forcing hardreset > > > and this a couple of times. Using echo none >/sys/power/pm_test and then > echo mem >/sys/power/state I see it hang on ata1 errors again. Waiting > about 10-30 seconds it progresses further and finally arrives at > > CPU0 attaching NULL sched-domain > CPU1 attaching NULL sched-domain > > then hangs. Please see if compiling the kernel with CONFIG_SMP unset makes suspend work. Also, if you could find the commit that broke things, it would probably help a lot. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
