On Monday 29 October 2007 22:37:37 Rafael J. Wysocki wrote: > On Monday, 29 October 2007 07:45, Maxim Levitsky wrote: > > On Sunday 28 October 2007 22:23:15 Rafael J. Wysocki wrote: > > > On Sunday, 28 October 2007 21:00, Maxim Levitsky wrote: > > > > On Saturday 27 October 2007 23:46:45 Rafael J. Wysocki wrote: > > > > > On Saturday, 27 October 2007 14:05, Maxim Levitsky wrote: > > > > > > Hi, > > > > > > > > > > > > Recently I noticed that my system resumes just after suspend to disk. > > > > > > > > > > > > I traced this to commit 9cd9a0058dd35268b24fa16795a92c800f4086d4. > > > > > > > > > > > > Note: > > > > > > > > > > > > This happens only if I enable WOL using /proc/acpi/wakeup > > > > > > (echo "ILAN" > /proc/acpi/wakeup) > > > > > > > > > > What happens after a suspend to RAM? > > > > I do more testing tomorrow, but what I remember is that, > > > > I had no issues with suspend-to-ram. > > > > (And take into account the fact that _all_ wakeup devices were enabled always, > > > > the rc.local does that for me, and still I did quite a lot of suspends, but I > > > > got the immediate resume, only and always after suspend to disk. > > > > > > Hm, can you please retest with the above commit applied, but with > > > device_suspend() in hibernation_platform_enter() replaced by device_shutdown()? > > Bingo! doing the above fixes this problem. > > And... strange, since I did test the system with e1000 unloaded, but still got same bug, > > back when I chased that bug, thus it is probably not related to e1000 and WOL. > > > > the ACPI wake-up source (I have read the DSDT, and ICH datasheets, thus I know that this is a set of bits in southbridge) > > of e1000 is shared with EHCI and HDA sound codec. > > (But usb on my system only able to wake from S3, and the soundchip which can theoretically wake up from S3 too, doesn't have this ability) > > > > (But disabling this wakeup source, fixes this bug too) > > OK > > Please get back to device_suspend() in hibernation_platform_enter() and try > to unload ehci_hcd before hibernation with the wakeup source enabled. Well, ... bingo! again! Replacing back the device_suspend() , and unloading the ehci_hcd fixes the problem! Even more, loading this module back causes this problem to reappear, and vise-verso. All wakeup sources are enabled always. Note that I don't have any USB 2.0 devices yet. The usb devices I have are: keyboard,mouse,and joystick. So now this problem looks fixable, I take a look at ehci driver. > > Greetings, > Rafael Big thanks again, Best regards, Maxim Levitsky _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
