On 05/11/2016 03:36 PM, Rafael J. Wysocki wrote: > On 5/11/2016 2:21 PM, Ville Syrjälä wrote: >> On Wed, May 11, 2016 at 02:11:29PM +0200, Sebastian Andrzej Siewior >> wrote: >>> On 05/11/2016 12:19 PM, Ville Syrjälä wrote: >>>> Hi, >>> Hi, >>> >>>> I have a Lenovo Ideapad S10-3t machine here (Atom N450, 1 core, 2 HT) >>>> which fails to resume from S3 on 4.6-rc releases. I bisected it down to >>>> >>>> commit 1cf4f629d9d246519a1e76c021806f2a51ddba4d >>>> Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> >>>> Date: Fri Feb 26 18:43:39 2016 +0000 >>>> >>>> cpu/hotplug: Move online calls to hotplugged cpu >>>> >>>> Unfortunately that won't revert cleanly, and neither does the merge >>>> commit, so I was unable to see if that is the only problematic commit >>>> in 4.6. >>>> >>>> Any ideas? >>> do you have a backtrace or anything or is it just not working and you >>> end up with a blank screen? >> Yeah can't get anything from the machine at that point. netconsole >> didn't help either, and no serial on this machine. And IIRC I've >> tried ramoops on this thing in the past but unfortunately the memory >> got cleared on reboot. >> > > Please try > > # echo processors > /sys/power/pm_test > > and then suspend (it should simulate a suspend, wait for approx. 5 sec > and then resume, see > Documentation/power/basic_pm_debugging.txt for details). See if that > works or if you can get any > traces etc. > > Thanks, > Rafael > Hmm, I thought I had some resume issue but ignored that, so I just tried again. On 4.6.0-rc1 all is fine but on 4.6.0-rc7 on resume the machine locks up totally. No response on ping or sysrq-B, only hard reset works. Tried this 'echo processors > /sys/power/pm_test' follow by pm-suspend and did find a lot of ACPI errors (attached) in the log which are definitely not present after normal boot. This is on a Intel(R) Pentium(R) CPU G3220 @ 3.00GHz So not sure if this is same issue but just wanted to mention it. _ Jim
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