Messages in this thread | | | Date | Thu, 05 Jul 2018 14:12:44 +0200 | From | Takashi Iwai <> | Subject | Re: [REGRESSION 4.17] Spurious wakeup / reboot with power button |
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On Thu, 05 Jul 2018 12:41:03 +0200, Rafael J. Wysocki wrote: > > On Thursday, July 5, 2018 11:50:11 AM CEST Takashi Iwai wrote: > > On Thu, 05 Jul 2018 11:34:59 +0200, > > Rafael J. Wysocki wrote: > > > > > > Hi, > > > > > > On Thu, Jul 5, 2018 at 9:05 AM, Takashi Iwai <tiwai@suse.de> wrote: > > > > Hi, > > > > > > > > we've got a regression report since 4.17 about the behavior of > > > > power-off with the power button. When a machine is powered off with > > > > the power button on desktop, it reboots after a few seconds instead of > > > > power down. > > > > > > > > The manual power down via "systemctl poweroff" works fine, so it's > > > > possibly some spurious wakeup by the power button action, and some > > > > ACPI-related change is suspected. > > > > The regression still remains in 4.18-rc3. > > > > > > There are only a few ACPI commits directly related to power management > > > between 4.16 and 4.17 and none of them looks particularly suspicious. > > > > OK, interesting. > > > > > It looks like the power button state may not be cleared sufficiently > > > after it's been pressed which is now visible for some reason. > > > > Hmm, where can such a state remain? Since it happens after the > > machine turned off, some (ACPI) wakeup bits? > > Basically, yes. > > It looks like a GPE may remain active which then triggers wakeup after > shutdown. > > On a hunch, I'm wondering if reverting commit > > 18996f2db918 ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume > > (may not revert clearly, though) makes any difference.
OK, I'm building a 4.17.x test kernel with that revert, in OBS home:tiwai:bsc1099930 repo.
Thomas, could you try later the kernel in http://download.opensuse.org/repositories/home:/tiwai:/bsc1099930/standard/ ? It'll take an hour or so until the build finishes.
thanks,
Takashi
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